Digital Indicating DO (Dissolved Oxygen) Meter

AER-102-DO
Instruction ManualPreface
Thank you for purchasing our AER-102-DO, Digital Indicating DO (Dissolved Oxygen) Meter.
This manual contains instructions for the mounting, functions, operations and notes when
operating the AER-102-DO. To ensure safe and correct use, thoroughly read and understandthis manual before using the instrument.
To prevent accidents arising from the misuse of the instrument, please ensure the operator
receives this manual.

Caution• This instrument should be used in accordance with the specifications described in the manual.
If it is not used according to the specifications, it may malfunction or cause a fire.
• Be sure to follow all of the warnings, cautions and notices. If they are not observed, serious
injury or malfunction may occur.
• The contents of this instruction manual are subject to change without notice.
• Care has been taken to ensure that the contents of this instruction manual are correct, but if
there are any doubts, mistakes or questions, please inform our sales department.
• This instrument is designed to be installed through a control panel. If it is not, measures
must be taken to ensure that the operator cannot touch power terminals or other highvoltage sections.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• Shinko Technos Co., Ltd. is not liable for any damage or secondary damage(s) incurred asa result of using this product, including any indirect damage.

Safety Precautions (Be sure to read these precautions before using our products.)
The safety precautions are classified into 2 categories: “Warning” and “Caution”.
Caution may result in
Depending on the circumstances, procedures indicated byserious consequences, so be sure to follow the directions for usage.
which may lead to dangerous conditions and cause
Warning Procedures
death or serious injury, if not carried out properly.
which may lead to dangerous conditions and cause
Caution Procedures
superficial to medium injury or physical damage or may degrade
or damage the product, if not carried out properly.

Warning• To prevent an electrical shock or fire, only Shinko or other qualified service personnel
may handle the inner assembly.
• To prevent an electrical shock, fire or damage to the instrument, parts replacement
may only be undertaken by Shinko or other qualified service personnel.

2

SAFETY PRECAUTIONS• To ensure safe and correct use, thoroughly read and understand this manual before
using this instrument.
• This instrument is intended to be used for measuring equipment. Verify correct usage
after purpose-of-use consultation with our agency or main office. (Never use this
instrument for medical purposes with which human lives are involved.)• External protection devices such as protective equipment against excessive
temperature rise, etc. must be installed, as malfunction of this product could result inserious damage to the system or injury to personnel. Proper periodic maintenance isalso required.
• This instrument must be used under the conditions and environment described in thismanual. Shinko Technos Co., Ltd. does not accept liability for any injury, loss of life ordamage occurring due to the instrument being used under conditions not otherwise
stated in this manual.

Caution with Respect to Export Trade Control Ordinance
To avoid this instrument from being used as a component in, or as being utilized in the
manufacture of weapons of mass destruction (i.e. military applications, militaryequipment, etc.), please investigate the end users and the final use of this instrument.
In the case of resale, ensure that this instrument is not illegally exported.

1. Installation Precautions

CautionThis instrument is intended to be used under the following environmental conditions(IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:• A minimum of dust, and an absence of corrosive gases• No flammable, explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )that does not change rapidly, and no icing• An ambient non-condensing humidity of 35 to 85 %RH• No large capacity electromagnetic switches or cables through which large current isflowing.
• No water, oil, chemicals or the vapors of these substances can come into directcontact with the unit.
• If the AER-102-DO is mounted through the face of a control panel, the ambient
temperature of the unit – not the ambient temperature of the control panel – must be
kept under 50 . Otherwise the life of electronic parts (especially electrolytic capacitors)of the unit will be shortened.
Note: Do not install this instrument on or near flammable material even though thecase of this instrument is made of flame-resistant resin.

32. Wiring Precautions

Caution• Do not leave wire remnants in the instrument, as they could cause a fire or amalfunction.
• Use a solderless terminal with an insulation sleeve in which the M3 screw fits whenwiring the AER-102-DO.
• The terminal block of this instrument is designed to be wired from the left side. The
lead wire must be inserted from the left side of the terminal, and fastened with theterminal screw.
• Tighten the terminal screw using the specified torque. If excessive force is applied tothe screw when tightening, the terminal screw may be damaged.
• This instrument does not have a built-in power switch, circuit breaker and fuse.
It is necessary to install a power switch, circuit breaker and fuse near the instrument.
(Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• Be sure to connect the ground terminal to earth for safety (D-class grounding).
Keep the grounding of this unit separate from other electrical devices, such as motors.
• Do not apply a commercial power source to the sensor which is connected to the input
terminal nor allow the power source to come into contact with the sensor.
• Use the DO Sensor made by OPTEX Co., Ltd.
• Keep the input wires and power lines separate.
Note about the DO Sensor Cable
The DO Sensor cable is a highly-insulated (electrical) cable. Please handle it withutmost care as follows.
• Do not allow terminals and socket of the DO Sensor cable to come in contact withmoisture or oil of any kind. Likewise, ensure fingers are clean, otherwise the insulation
will deteriorate, resulting in unstable indication.
Be sure to keep the cable dry and clean at all times.
If the cable is stained, clean it with alcohol, and dry it completely.
• For calibration or checking/replacement, the DO Sensor cable should be wired with
sufficient length.
• Keep the DO Sensor cable and junction cable away from electrical devices, such as
motors or their power lines from which inductive interference emanates.
Connection
The DO Sensor cable has the following terminals.
Code
Terminal
RS-485 (SENSOR INPUT)
DO Sensor YB (+) input terminal (Blue)
RS-485 (SENSOR INPUT)
DO Sensor YA (-) input terminal (Green)
POWER FOR SENSOR
External power (+) terminal (Red)POWER FOR SENSOR
External power (-) terminal (Black) and DO Sensor
shieldWhite and brown cables of the DO Sensor are not used, so cut them off, and electricallyinsulate them.
If they come in contact with other terminals, a malfunction will occur.
4

3. Operation and Maintenance Precautions

Caution• Do not touch live terminals. This may cause an electrical shock or problems inoperation.
• Turn the power supply to the instrument OFF when retightening the terminal orcleaning.
Working on or touching the terminal with the power switched ON may result in severe
injury or death due to electrical shock.
• Use a soft, dry cloth when cleaning the instrument.
(Alcohol based substances may tarnish or deface the unit.)• As the display section is vulnerable, be careful not to put pressure on, scratch or strike
it with a hard object.

Abbreviations used in this manual
Name
DO
Display Mode

Term
Dissolved Oxygen
DO Concentration/Temperature Display Mode
DO % Saturation/Temperature Display Mode
Oxygen Partial Pressure/Temperature Display Mode

Characters Used in This Manual
Indication
Number,

/

-1

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Indication
Alphabet
Indication
Alphabet

5

Contents
Page
1. Model ................................................................................................................................. 8
1.1 Model ...........................................................................................................................8
1.2 How to Read the Model Label ......................................................................................8
2. Names and Functions of Instrument................................................................................... 9
3. Mounting AER-102-DO and DO Sensor ........................................................................... 10
3.1 Site Selection ............................................................................................................10
3.2 External Dimensions (Scale: mm) .............................................................................10
3.3 Panel Cutout (Scale: mm) .......................................................................................... 11
3.4 Mounting and Removal ..............................................................................................12
3.5 DO Sensor .................................................................................................................13
3.5.1 Contents of Package ........................................................................................ 13
3.5.2 Caution when Using DO Sensor ....................................................................... 13
3.5.3 Name of Sections ............................................................................................. 14
3.5.4 Attaching the Sensor Cap ................................................................................. 15
3.5.5 Installing the DO Sensor ................................................................................... 16
3.5.6 Extending DO Sensor Cable............................................................................. 18
4. Wiring ............................................................................................................................... 19
4.1 Lead Wire Solderless Terminal ..................................................................................20
4.2 Terminal Arrangement ...............................................................................................21
4.3 Wiring Example ..........................................................................................................23
5. Outline of Key Operation and Setting Groups .................................................................... 24
5.1 Outline of Key Operation ............................................................................................24
5.2 Setting Groups ...........................................................................................................24
6. Setup ................................................................................................................................ 26
6.1 Turn the Power Supply to the AER-102-DO ON. .......................................................26
6.2 DO Concentration Input Group ..................................................................................27
6.3 Transmission Output 1 Group ....................................................................................28
6.4 Transmission Output 2 Group ....................................................................................30
6.5 EVT1 Action Group ....................................................................................................32
6.6 EVT2 Action Group ....................................................................................................40
6.7 EVT3 Action Group ....................................................................................................40
6.8 EVT4 Action Group ....................................................................................................40
6.9 Communication Group ...............................................................................................41
6.10 Cleansing Group ......................................................................................................43
6.11 Basic Function Group ...............................................................................................44
6.12 Self-Check Group ....................................................................................................49
6.13 Data Clear Group .....................................................................................................53
7. Calibration ........................................................................................................................ 54
7.1 DO Concentration Calibration ....................................................................................54
7.1.1 Preparation ....................................................................................................... 54
7.1.2 DO Concentration 1-point Calibration Mode ..................................................... 55
7.1.3 DO Concentration 2-point Calibration Mode ..................................................... 57
7.1.4 Concentration Option Calibration Mode ............................................................ 60
7.2 Transmission Output 1 Adjustment Mode ..................................................................62
7.3 Transmission Output 2 Adjustment Mode ..................................................................63
6

8. Measurement ................................................................................................................... 65
8.1 Starting Measurement................................................................................................65
8.2 Outside Measurement Range ....................................................................................65
8.3 Errors .........................................................................................................................66
8.4 About Transmission Output 1 and Transmission Output 2 .........................................66
8.5 Self-Check Output......................................................................................................67
8.6 EVT1 to EVT4 Outputs ..............................................................................................68
8.7 Sensor Cap Replacement Timer Output ....................................................................71
8.8 Cleansing Output .......................................................................................................72
8.9 Forced Cleansing Mode .............................................................................................73
9. Specifications ................................................................................................................... 74
9.1 Specifications .............................................................................................................74
9.1.1 Standard Specifications .................................................................................... 74
9.1.2 Optional Specifications ..................................................................................... 81
9.2 DO Sensor Specifications ..........................................................................................82
10. Troubleshooting .............................................................................................................. 83
10.1 Indication .................................................................................................................83
10.2 Key Operation ..........................................................................................................84
11. Character Tables ............................................................................................................ 85
11.1 Setting Group List ....................................................................................................85
11.2 DO Concentration Calibration ..................................................................................85
11.3 Transmission output 1 Adjustment Mode .................................................................86
11.4 Transmission output 2 Adjustment Mode .................................................................86
11.5 DO Concentration Input Group.................................................................................86
11.6 Transmission Output 1 Group ..................................................................................87
11.7 Transmission Output 2 Group ..................................................................................88
11.8 EVT1 Action Group ..................................................................................................89
11.9 EVT2 Action Group ..................................................................................................92
11.10 EVT3 Action Group ................................................................................................95
11.11 EVT4 Action Group .................................................................................................98
11.12 Communication Group .........................................................................................101
11.13 Cleansing Group ..................................................................................................101
11.14 Basic Function Group ...........................................................................................102
11.15 Self-Check Group .................................................................................................103
11.16 Data Clear Group .................................................................................................104
11.17 Error Codes ..........................................................................................................104
12. Key Operation Flowchart .............................................................................................. 106
13 Maintenance ................................................................................................................... 110
13.1 Maintenance .......................................................................................................... 110
13.2 Periodic Inspection................................................................................................. 110
13.3 Replacement of Consumables (Maintenance Parts) .............................................. 110
13.4 Calibration .............................................................................................................. 110
13.5 Long-Term Storage ................................................................................................ 110
14. Reference Chart ............................................................................................................ 111

71. Model
1.1 Model
AER-102-

Input points
Input

2

DO

,
2 points
Optical DO Sensor
100 to 240 V AC (standard)
24 V AC/DC (*)
Serial communication RS-485
EVT3, EVT4 outputs (Contact output 3, 4)DOPower supply voltage

1
C5
EVT3

Option(*) Power supply voltage 100 to 240 V AC is standard.
When ordering 24 V AC/DC, enter “1” in Power supply voltage, after ‘DO’.
1.2 How to Read the Model Label
The model label is attached to the left side of the case.
Model, Option
Development No.
Input indication
Power supply voltage, Power consumption
Serial number
Manufacturer
Factory ID
RoHS directive compliant(Fig. 1.2-1)

8

2. Names and Functions of Instrument
DO Display
Temperature Display
Output Display

Action Indicators

UP keyMODE key

DOWN key

SET key(Fig. 2-1)
Displays
DO Display

Temperature
Display
Output Display

DO Concentration or characters in setting mode are indicated in
red/green/orange.
Indications differ depending on the selections in [Backlight selection(p.44)] and [DO color (p.45)].
Temperature or values in setting mode are indicated in green.
Indications differ depending on the selections in [Backlight selection(p.44)].
Backlight GreenThe bar graph is lit corresponding to the transmission output.
Indications differ depending on the selections in [Bar graphindication (p.46)].

Action Indicators: Backlight orange
EVT1
Lit when EVT1 output (Contact output 1) is ON.
EVT2
Lit when EVT2 output (Contact output 2) is ON.
EVT3
Lit when EVT3 output (Contact output 3) (EVT3 option) is ON.
EVT4
Lit when EVT4 output (Contact output 4) (EVT3 option) is ON.
T/R
Lit during Serial communication (C5 option) TX output (transmitting).
LOCK
Lit when Lock 1, 2 or 3 is selected.
Keys
UP keyDOWN key
MODE key
SET key

Increases the numeric value.
Decreases the numeric value.
Selects a group.
Switches the setting modes, and registers the set value.
93. Mounting AER-102-DO and DO Sensor
3.1 Site Selection

CautionUse within the following temperature and humidity ranges:
Temperature: 0 to 50 (32 to 122 ) (No icing)
Humidity: 35 to 85 %RH (Non-condensing)
If AER-102-DO is mounted through the face of a control panel, the ambient temperatureof the unit – not the ambient temperature of the control panel – must be kept under
50 , otherwise the life of electronic parts (especially electrolytic capacitors) of the unit
will be shortened.
This instrument is intended to be used under the following environmental
conditions (IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:• A minimum of dust, and an absence of corrosive gases• No flammable, explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of 0 to 50 (32 to 122 )that does not change rapidly• An ambient non-condensing humidity of 35 to 85 %RH• No large capacity electromagnetic switches or cables through which large current
is flowing• No water, oil, chemicals or the vapors of these substances can come into directcontact with the unit.
3.2 External Dimensions (Scale: mm)Screw type mounting bracket

96
48

Terminal cover (sold separately)

91
106.2

Gasket11.5

98.5
104.5 (when terminal cover is used)(Fig. 3.2-1)
10

3.3 Panel Cutout (Scale: mm)

Caution130

92＋0.80

If horizontal close mounting is used for the unit, IP66 specification(Drip-proof/ Dust-proof) may be compromised, and all warranties will
be invalidated.

92＋0.80

n×48-3 ＋0.5
0Horizontal close mounting
n: Number of mounted units
45＋0.50(Fig. 3.3-1)

11

3.4 Mounting and Removal

CautionAs the case is made of resin, do not use excessive force while screwing in
the mounting bracket, or the case or mounting brackets could be damaged.
The tightening torque should be 0.12 N•m.
How to mount the unit
Mount the unit vertically to the flat, rigid panel to ensure it adheres to the Drip-proof/
Dust-proof specification (IP66).
Mountable panel thickness: 1 to 8 mm(1) Insert the unit from the front side of the panel.
(2) Attach the mounting brackets by the holes at the top and bottom of the case, andsecure the unit in place with the screws.

How to remove the unit
(1) Turn the power to the unit OFF, and disconnect all wires before removing the unit.
(2) Loosen the screws of the mounting brackets, and remove the mounting brackets.
(3) Pull the unit out from the front of the panel.

UP(Fig. 3.4-1)

12

3.5 DO Sensor

3.5.1 Contents of Package
The following items are contained in the DO Sensor package.

DO Sensor (DOS-20)

Sensor cap (DOS-CP)

Calibration container(Fig. 3.5.1-1)
3.5.2 Caution when Using DO Sensor

Caution
Do not use the DO Sensor for any purposes other than water quality measurement.
Do not disassemble or modify.
The sensor contains a high voltage
component which may cause fire orelectrical shock.
For internal inspection, maintenanceor repair, please consult us or ouragency.
(Fig. 3.5.2-1)
Do not subject the sensor to any
rough treatment. Do not drop theunit. Handle with care.

(Fig. 3.5.2-2)
Do not touch the measurement
section. If it is not clean, wipe it witha clean, soft cloth.

(Fig. 3.5.2-3)
13

Be careful not to damage the cable.
Ensure that the cable is not tangled,
nor caught or trapped in any way
when installing and using the sensor.
Use a spiral cable wrap to protect thecable.
If the cable is damaged, it may
malfunction when immersed, and fireor electrical shock will occur.

(Fig. 3.5.2-4)

3.5.3 Name of Sections

Protective coverSensor cap

Detection area

Humidity sensor

Measurement section(Fig. 3.5.3-1)

14

3.5.4 Attaching the Sensor Cap

Caution• Before attaching, make sure that the O-ring of the sensor is not crooked oris in the right position in the groove.
• Take the sensor cap out from the package just before mounting, and mount it
immediately.
• When mounting the sensor cap, keep the dust or
water from entering into the cap.
Otherwise correct measurement will not be performed.
• Date of manufacture is written on the storage caseof sensor cap as the right diagram.
(Fig. 3.5.4-1)(1) Remove the protective cover from the sensor by rotating it, then remove the redprotective cap. Please carefully set aside the protective cap.

Protective cap

Protective cover(Fig. 3.5.4-2)(2) Take the provided sensor cap out from the storage case.

(Fig. 3.5.4-3)(3) Match the arrows on the sensor cap and on the sensor, thenpush the sensor cap straight onto it until no gap is visible.

(Fig. 3.5.4-4)(4) Reattach the protective cover.
15

3.5.5 Installing the DO Sensor

Caution
Before installation, remove the power supply cable from the power source.
After completion, wire the power supply cable.
The end of DO Sensor cable isequipped with a female screw(1¼-11 ½NPT) to enable a malescrew to be attached to a severedpipe.
NPT stands for National Pipe Thread
Taper (which is a U.S. standard fortapered threads used on threaded
pipes and fittings).
When installing the DO Sensor, makesure that air bubbles are not present
on and near the detection surface.
If air bubbles accumulate in themeasurement section area, correct
measurement cannot be obtained.

(Fig. 3.5.5-1)(Fig. 3.5.5-2)

Wall

Do not install the DO Sensor near to
any walls or where water collects.
Correct dissolved oxygen in the tank(for measurement) cannot bemeasured.

(Fig. 3.5.5-3)
Install the DO Sensor at a minimumof about 30 cm below the lowest
water surface, taking water levelchanges into consideration.
30 cm minimum(Fig. 3.5.5-4)
16

Recommendations• As an accessory, the attachment (DA-1), sold separately, is recommended to use
in a place where water currents are fast.
• The following (1) to (4) are included in the immersion holder.
• The Polyvinyl chloride (PVC) pipe (VP-40) is to be supplied by the user.

Stanchion pole (PS-1)
PVC pipe: VP-40(To be supplied by the user)(2) 2-pipe hanger (40A)(3) 2-fitting(*) Recommended(1) 4-U bolt
SUS304 50AxM10(4) Pipe attachment joint
PVC (11/4 - 111/2 inch NPT male screw/40A)(Fig. 3.5.5-5)

17

3.5.6 Extending DO Sensor Cable
DO Sensor cable standard length is 10 m.
To extend the cable, refer to the following diagram.
Use a device such as a pull box if necessary.

Pull box, etc.

Extendable cable length: 1200 m (Nominal cross-section area: 0.2 to 1.25 mm2)

(Fig. 3.5.6-1)

18

4. Wiring
Warning
Turn the power supply to the instrument off before wiring or checking.
Working on or touching the terminal with the power switched on may result insevere injury or death due to electrical shock.

Caution• Do not leave wire remnants in the instrument, as they could cause a fire or amalfunction.
• Use a solderless terminal with an insulation sleeve in which the M3 screw fits whenwiring the AER-102-DO.
• The terminal block of this instrument is designed to be wired from the left side. The
lead wire must be inserted from the left side of the terminal, and fastened with theterminal screw.
• Tighten the terminal screw using the specified torque. If excessive force is applied tothe screw when tightening, the terminal screw may be damaged.
• This instrument does not have a built-in power switch, circuit breaker and fuse.
It is necessary to install a power switch, circuit breaker and fuse near the instrument.
(Recommended fuse: Time-lag fuse, rated voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• Be sure to connect the ground terminal to earth for safety (D-class grounding).
Keep the grounding of this unit separate from other electrical devices, such as motors.
• Do not apply a commercial power source to the sensor which is connected to the input
terminal nor allow the power source to come into contact with the sensor.
• Use the DO Sensor in accordance with the sensor input specifications of this unit.
• Keep the input wires and power lines separate.

19

Caution
Note about the DO Sensor Cable
The DO Sensor cable is a highly-insulated (electrical) cable. Please handle it withutmost care as follows.
• Do not allow terminals and socket of the DO Sensor cable to come in contact withmoisture or oil of any kind. Likewise, ensure fingers are clean, otherwise the insulation
will deteriorate, resulting in unstable indication.
Be sure to keep the cable dry and clean at all times.
If the cable is stained, clean it with alcohol, and dry it completely.
• For calibration or checking/replacement, the DO Sensor cable should be wired with
sufficient length.
• Keep the DO Sensor cable and junction cable away from electrical devices, such as
motors or their power lines from which inductive interference emanates.
Connection
The DO Sensor cable has the following terminals.
Code
Terminal
RS-485 (SENSOR INPUT)
DO Sensor YB (+) input terminal (Blue)
RS-485 (SENSOR INPUT)
DO Sensor YA (-) input terminal (Green)
POWER FOR SENSOR
External power (+) terminal (Red)POWER FOR SENSOR
External power (-) terminal (Black) and DO Sensor
shieldThe white and brown wires of the DO Sensor are not used. Cut them off and electricallyinsulate them.
If they come in contact with other terminals, a malfunction will occur.
4.1 Lead Wire Solderless Terminal
Use a solderless terminal with an insulation sleeve in which an M3 screw fits as follows.
The tightening torque should be 0.63 N•m.

Y-type

5.8 mm max.

Ring-type

Manufacturer

Model

Nichifu Terminal Industries CO.,LTD.
Japan Solderless Terminal MFG CO.,LTD.
Nichifu Terminal Industries CO.,LTD.
Japan Solderless Terminal MFG CO.,LTD.

TMEV1.25Y-3
VD1.25-B3A
TMEV1.25-3
V1.25-3

3.2 mm

3.2 mm

5.8 mm max.

Solderless
Terminal(Fig. 4.1-1)
20

Tightening
Torque0.63 N•m

4.2 Terminal Arrangement
Standard specification(Fig. 4.2-1)

EVT3 option(Fig. 4.2-2)

21

C5 option(Fig. 4.2-3)

C5, EVT3 options(Fig. 4.2-4)

22

Code
GND
POWER SUPPLY

EVT1
EVT2
TRANSMIT OUTPUT1
TRANSMIT OUTPUT2SELFCHECK OUTPUT
DO POWER FOR SENSOR
DO POWER FOR SENSOR
DO RS-485(sensor input)
DO RS-485(sensor input)
RS-485EVT3
EVT4Description
GroundPower supply
100 to 240 V AC or 24 V AC/DC (when 1 is added
after the model name DO)
For 24 V DC, ensure polarity is correct.
EVT1 output (Contact output 1)
EVT2 output (Contact output 2)
Transmission output 1
Transmission output 2
Self-check output (Contact output)
External power supply (+) terminal (Red)External power supply (-) terminal and
DO Sensor shield (Black)
DO Sensor YB(+) input terminal (Blue)DO Sensor YA(-) input terminal (Green)
Serial communication RS-485 (C5 option)
2 connectors are wired internally.
Use the included wire harnesses C5J and C0J.
EVT3 output (Contact output 3) (EVT3 option)
Use the included wire harnesses HBJ.
EVT4 output (Contact output 4) (EVT3 option)
Use the included wire harnesses HBJ.

4.3 Wiring Example
100 to 240 V AC
AER-102-DO

Power supply (*1)
L N
Recorder, etc.

1

11

2

12

3

13

4

14

5

15

6

16

7
8
Input
Power terminals
terminals - +DO Sensor

-V +V

9
10

(Blue)(Green)17(Red)(Black

18
19
20

(*2)

Shield (*3)(*1) Power supply (12 to 36 V DC) is supplied by the user.
(*2) White and brown cables of the DO Sensor are not used, so cut them off, and electrically insulate them.
If they come in contact with other terminals, a malfunction will occur.
(*3) Electrically insulate the DO Sensor shield, and connect the shield and black wire to (-) terminal of
external power supply.

(Fig. 4.3-1)
23

5. Outline of Key Operation and Setting Groups
5.1 Outline of Key Operation
Key operation is used in Group Selection Mode in which setting items are divided into
groups.
To enter Group Selection Mode, press the
key in Display Mode or Cleansing Output
Mode.
Select a group with thekey, and press the
key. The unit enters each setting item.
To set each item, use theorkey, and register the set value with thekey.
If thekey is held down for 3 seconds at any setting item, the unit will revert to
Display Mode or Cleansing Output Mode.
5.2 Setting Groups
Setting groups are indicated on p.25.
[About each mode and setting items]
Setting group or setting item in shaded section will be displayed only when
the corresponding option is ordered.
(*1) In Cleansing Output Mode, the measured value (DO concentration, DO % saturation, Oxygen
partial pressure, Temperature) will be held during cleansing action (Cleansing time, Standby after
cleansing).
(*2) If errors occur during 1st-point calibration (100% saturation calibration) while in 2-point calibrationmode, press theorkey. The unit will revert to Display Mode or Cleansing Output Mode.
(*3) Depending on the selection in [Data clear Stop/Perform], the unit operates as follows.
If ‘Data clear Stop’ is selected, data will not be cleared. The unit will revert to the mode prior to Dataclear Stop (either Display Mode or Cleansing Output Mode).
If ‘Data clear Perform’ is selected, data will be cleared. The unit will revert to the mode prior to Dataclear Perform (either Display Mode or Cleansing Output Mode). (While data is being cleared, allindications are momentarily unlit.)[About Key Operation]•,,: Press the,orkey. The unit will proceed to the next
setting item, illustrated by an arrow.
•,: Press theor
key until the desired setting mode appears.
•

•

•

•

+

(3 sec): Press and hold the
key andkey (in that order)
together for approx. 3 seconds. The unit will proceed to DO
concentration 1-point calibration mode.
(3 sec),(3 sec): Press theor
key for approx. 3 seconds.
The unit will proceed to the next setting mode, illustrated
by an arrow.
+(3 sec): Press and hold the
key andkey (in that order) together
for approx. 3 seconds. The unit will proceed to Transmission output
1 Zero adjustment mode.
*(3 sec): Press and hold the
key andkey (in that order) together
for approx. 3 seconds. The unit will proceed to Transmission output
2 Zero adjustment mode.
24

Abbreviations: DO: Dissolved oxygen, Temp: Temperature, Satu: Saturation,
Calib: Calibration, Adjust: Adjustment, Trans.: Transmission

POWER ON

Display Mode or Cleansing Output Mode (*1)
DO concentration/
DO % saturation/
Temp. Display Mode
Temp. Display Mode+

(3 sec)Oxygen partial pressure/Temp. Display Mode

DO concentration
1-point calib. mode

1-point calibration(100% satu.calib.)

DO concentration
2-point calib. mode

1st-point calibration(100% satu.calib.) (*2)

Concentration
option calib. mode

Concentration option
auto calibration(3 sec)Forced cleansingmode+(3 sec)Transmission output 1
Zero adjust. mode

Transmission output 1
Span adjust. mode+

(3 sec)Transmission output 2
Zero adjust. mode

Transmission output 2
Span adjust. mode

Group Selection
DO concentration
Input Group

Item Selection
Signal output
response time

Altitude correction

Transmission
Output 1 Group

Transmission
output 1 typeTrans. output 1 value
HOLD when calibrating

Transmission
Output 2 Group

Transmission
output 2 typeTrans. output 2 value
HOLD when calibrating

EVT1 Action Group

EVT1 type

EVT1 hysteresis

EVT2 Action GroupEVT2 type

EVT2 hysteresis

EVT3 Action GroupEVT3 type

EVT3 hysteresis

EVT4 Action Group

EVT4 type

EVT4 hysteresis

Communication
Group

Communication
protocolStop bit

Cleansing Group

Cleansing timeStandby after
cleansing

Basic FunctionGroup

Set value lockSensor cap replacement timer remainder

Self-Check GroupAll lit mode

Input mode

Data Clear Group

Data clear
selection

Data clear
Stop/Perform (*3)

25

2nd-point calib.
(0-point calib.)

After cleansing, automatically proceeds.

(3 sec)

6. Setup
Setup should be done before using this instrument according to the user’s conditions:
Setting the DO concentration input, Transmission output 1, Transmission output 2,
EVT1, EVT2, EVT3 (EVT3 option) and EVT4 (EVT3 option) types, Communication (C5option), Cleansing and Indication settings, etc.
Setup can be conducted in the groups below.
DO Concentration Input Group, Transmission Output 1 Group, Transmission Output 2
Group, EVT1, EVT2, EVT3, EVT4 Action Groups, Communication Group, Cleansing
Group, Basic Function GroupIf the user’s specification is the same as the factory default value of the AER-102-DO, or
if setup has already been completed, it is not necessary to set up the instrument.
Proceed to Chapter “7. Calibration (p.54)”.
6.1 Turn the Power Supply to the AER-102-DO ON.
For approx. 8 seconds after the power is switched ON, the following characters areindicated on the DO Display and Temperature Display.
Display
Indication
DO Display
Temperature Display[Version number (e.g.) 1.00]
During this time, all outputs are in OFF status, and action indicators turns OFF.
After that, measurement starts, indicating the item selected in [Backlight selection(p.44)].
This status is called Display Mode or Cleansing Output Mode.
Switching Between Modes
key is pressed, modes progress as follows.
Every time the

DO Concentration / Temperature Display Mode
DO % Saturation / Temperature Display Mode
Oxygen Partial Pressure / Temperature Display Mode26

6.2 DO Concentration Input GroupTo enter the DO Concentration Input Group, follow the procedure below.
1
Press thekey in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to the DO Concentration Input Group, and “Signal
output response time” will appear.
Character Setting Item, Function, Setting Range
Factory Default
Signal output response time
60 seconds• Sets the signal output response time.
Moving average is calculated from the set signal output response
time, and the resulting value is updated every Data update cycle(5 seconds) as a measurement value.
Moving average = Signal output response time ・・ Data update
cycle (5 sec.)(e.g.) If signal output response time is set to 50 seconds, the Moving
average will be: 50/5 = 10 (times)
However, signal output response time setting will be invalidated
during DO concentration calibration mode, Transmission output 1 or 2
adjustment mode.
• Setting range: 5 to 600 seconds
Salinity correction
0 PSU• Sets the salinity concentration correction value.
• Setting range: 0 to 42 PSU
Altitude correction
0m• Sets altitude.
• Setting range: 0 to 5000 m

27

6.3 Transmission Output 1 GroupTo enter Transmission Output 1 Group, follow the procedure below.
1
Press thekey twice in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters Transmission Output 1 Group, and “Transmission
output 1 type” will appear.
Character Setting Item, Function, Setting Range
Factory Default
Transmission output 1 type
DO concentrationtransmission• Selects Transmission output 1 type.
•: DO concentration transmission: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission: EVT1 MV transmission: EVT2 MV transmission: EVT3 MV transmission (*): EVT4 MV transmission (*)
Transmission output 1 high limit
20.00 mg/L
• Sets Transmission output 1 high limit value.
(This value correponds to 20 mA DC output.)
If Transmission output 1 high limit and low limit are set to the samevalue, Transmission output 1 will be fixed at 4 mA DC.
• Setting range:
DO concentration transmission:
Transmission output 1 low limit to 20.00 mg/L
Water temperature transmission:
Transmission output 1 low limit to 50.0
DO % saturation transmission:
Transmission output 1 low limit to 200.0%
Oxygen partial pressure transmission:
Transmission output 1 low limit to 150.0 kPa
EVT1 to EVT4 MV transmission:
Transmission output 1 low limit to 100.0%(*) Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.

28

Character

Setting Item, Function, Setting Range
Factory Default
Transmission output 1 low limit
0.00 mg/L• Sets Transmission output 1 low limit value.
(This value correponds to 4 mA DC output.)
If Transmission output 1 high limit and low limit are set to the samevalue, Transmission output 1 will be fixed at 4 mA DC.
• Setting range:
DO concentration transmission:
0.00 mg/L to Transmission output 1 high limit
Water temperature transmission:
0.0 to Transmission output 1 high limit
DO % saturation transmission:
0.0% to Transmission output 1 high limit
Oxygen partial pressure transmission:
0.0 kPa to Transmission output 1 high limit
EVT1 to EVT4 MV transmission:
0.0% to Transmission output 1 high limit
Transmission output 1 status when
Last value HOLD
calibrating• Selects Transmission output 1 output status when calibrating DO
concentration.
• Selection item:: Last value HOLD
: Set value HOLD (Outputs the value set in [Transmission
output 1 value HOLD when calibrating].): Measured value (Outputs the measured value whencalibrating DO concentration.)Transmission output 1 value HOLD
0.00 mg/L
when calibrating• Sets Transmission output 1 value HOLD.
• Available only when(Set value HOLD) is selected in[Transmission output 1 status when calibrating].
• Setting range:
DO concentration transmission: 0.00 to 20.00 mg/L
Water temperature transmission: 0.0 to 50.0
DO % saturation transmission: 0.0 to 200.0%
Oxygen partial pressure transmission: 0.0 to 150.0 kPa
EVT1 to EVT4 MV transmission: 0.0 to 100.0%

29

6.4 Transmission Output 2 GroupTo enter Transmission Output 2 Group, follow the procedure below.
1
Press thekey 3 times in Display Mode or Cleansing Output
Mode.
2
Press thekey.
The unit enters Transmission Output 2 Group, and “Transmission
output 2 type” will appear.
Character Setting Item, Function, Setting Range
Factory Default
Transmission output 2 type
DO concentrationtransmission• Selects Transmission output 2 type.
•: DO concentration transmission: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission: EVT1 MV transmission: EVT2 MV transmission: EVT3 MV transmission (*): EVT4 MV transmission (*)
Transmission output 2 high limit
20.00 mg/L
• Sets Transmission output 2 high limit value.
(This value correponds to 20 mA DC output.)
If Transmission output 2 high limit and low limit are set to the samevalue, Transmission output 2 will be fixed at 4 mA DC.
• Setting range:
DO concentration transmission:
Transmission output 2 low limit to 20.00 mg/L
Water temperature transmission:
Transmission output 2 low limit to 50.0
DO % saturation transmission:
Transmission output 2 low limit to 200.0%
Oxygen partial pressure transmission:
Transmission output 2 low limit to 150.0 kPa
EVT1 to EVT4 MV transmission:
Transmission output 2 low limit to 100.0%(*) Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.

30

Character

Setting Item, Function, Setting Range
Factory Default
Transmission output 2 low limit
0.00 mg/L• Sets Transmission output 2 low limit value.
(This value correponds to 4 mA DC output.)
If Transmission output 2 high limit and low limit are set to the samevalue, Transmission output 2 will be fixed at 4 mA DC.
• Setting range:
DO concentration transmission:
0.00 mg/L to Transmission output 2 high limit
Water temperature transmission:
0.0 to Transmission output 2 high limit
DO % saturation transmission:
0.0% to Transmission output 2 high limit
Oxygen partial pressure transmission:
0.0 kPa to Transmission output 2 high limit
EVT1 to EVT4 MV transmission:
0.0% to Transmission output 2 high limit
Transmission output 2 status when
Last value HOLD
calibrating• Selects Transmission output 2 output status when calibrating DO
concentration.
• Selection item:: Last value HOLD
: Set value HOLD (Outputs the value set in [Transmission
output 2 value HOLD when calibrating].): Measured value (Outputs the measured value whencalibrating DO concentration.)Transmission output 2 value HOLD
0.00 mg/L
when calibrating• Sets Transmission output 2 value HOLD.
• Available only when(Set value HOLD) is selected in[Transmission output 2 status when calibrating].
• Setting range:
DO concentration transmission: 0.00 to 20.00 mg/L
Water temperature transmission: 0.0 to 50.0
DO % saturation transmission: 0.0 to 200.0%
Oxygen partial pressure transmission: 0.0 to 150.0 kPa
EVT1 to EVT4 MV transmission: 0.0 to 100.0%

31

6.5 EVT1 Action GroupTo enter the EVT1 Action Group, follow the procedure below.
1
Press thekey 4 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit proceeds to the EVT1 Action Group, and ”EVT1 type“ willappear.
Character Setting Item, Function, Setting Range
Factory Default
EVT1 type
No action• Selects an EVT1 output (Contact output 1) type.
Note: If EVT1 type is changed, EVT1 value defaults to 0.00 or 0.0.
: No action•: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action(Fig. 6.5-1): DO % saturation input high limit action(p.37): DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer (Fig. 6.5-3) (p.38): Cleansing output (Fig. 6.5-4) (p.39): DO concentration input High/Low limits
independent action: Water temperature input High/Low limits(Fig. 6.5-2)
independent action(P.38): DO % saturation input High/Low limits
independent action: Oxygen partial pressure input High/Low
limits independent action
DO concentration input: 0.00 mg/L
EVT1 value
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa• Sets EVT1 value.
• Not available for this setting item and all subsequent items if(No action),(Sensor cap replacement timer), or(Cleansing output) is selected in [EVT1 type].
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input:
0.0 to 200.0%
Oxygen partial pressure: 0.0 to 150.0 kPa

32Character

Setting Item, Function, Setting Range
Factory Default
EVT1 proportional band
DO concentration input: 0.00 mg/L
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa• Sets EVT1 proportional band.
ON/OFF action when set to 0.00 or 0.0.
(DO concentration input High/Low limits• Not available if(Water temperature input High/Low
independent action),(DO % saturation input High/limits independent action),(Oxygen partial pressure
Low limits independent action) or
input High/Low limits independent action) is selected in [EVT1 type].
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input:
0.0 to 200.0%
Oxygen partial pressure: 0.0 to 150.0 kPa
EVT1 reset
DO concentration input: 0.00 mg/L
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa• Sets EVT1 reset value.
(DO concentration input High/Low limits• Not available if(Water temperature input High/Low
independent action),(DO % saturation input High/limits independent action),(Oxygen partial pressure
Low limits independent action) or
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for ON/OFF action.
• Setting range:
DO concentration input: -2.00 to 2.00 mg/L
Water temperature input: -5.0 to 5.0
DO % saturation input:-20.0 to 20.0%
Oxygen partial pressure: -15.0 to 15.0 kPa
EVT1 hysteresis type
Reference Value• Selects EVT1 output hysteresis type (Medium or Reference Value).
(Fig. 6.5-1) (p.37)(DO concentration input High/Low limits• Not available if(Water temperature input High/Low
independent action),(DO % saturation input High/limits independent action),(Oxygen partial pressure
Low limits independent action) or
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for the P action.
: Medium Value•
Sets the same value for both ON and OFF sides inrelation to EVT1 value.
Only ON side needs to be set.
: Reference Value
Sets individual values for ON and OFF sides in relation
to EVT1 value.
Both ON and OFF sides need to be set individually.

33

Character

Setting Item, Function, Setting Range
Factory Default
DO
concentration
input: 0.01 mg/L
EVT1 ON side
Water temperature input: 1.0
DO % saturation input: 0.1%
Oxygen partial pressure input: 0.1 kPa• Sets the span of EVT1 ON side. (Fig. 6.5-1) (p.37)
If(Medium Value) is selected in [EVT1 hysteresis type], thespan of ON/OFF side will be the same value.
(DO concentration input High/Low limits• Not available if
independent action),(Water temperature input High/Low
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for the P action.
• Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
DO concentration input: 0.01 mg/L
EVT1 OFF side
Water temperature input: 1.0
DO % saturation input: 0.1%
Oxygen partial pressure input: 0.1 kPa• Sets the span of EVT1 OFF side. (Fig. 6.5-1) ( p.37)(DO concentration input High/Low limits• Not available if
independent action),(Water temperature input High/Low
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for the P action, or if(Medium Value)
is selected in [EVT1 hysteresis type].
• Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input:
0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT1 ON delay time
0 seconds• Sets EVT1 ON delay time.
The EVT1 output does not turn ON after the input value exceeds the
EVT1 value until the time set in [EVT1 ON delay time] elapses.
• Not available for the P action.
• Setting range: 0 to 10000 seconds

34

Character

Setting Item, Function, Setting Range
Factory Default
EVT1 OFF delay time
0 seconds• Sets EVT1 OFF delay time.
The EVT1 output does not turn OFF after the input value exceeds the
EVT1 value until the time set in [EVT1 OFF delay time] elapses.
• Not available for the P action.
• Setting range: 0 to 10000 seconds
EVT1 proportional cycle
30 seconds• Sets EVT1 proportional cycle.
• Not available if(DO concentration input High/Low limits
independent action),(Water temperature input High/Low
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for the ON/OFF action.
• Setting range: 1 to 300 seconds
EVT1 output high limit
100%• Sets EVT1 output high limit value.
• Not available if(DO concentration input High/Low limits
independent action),(Water temperature input High/Low
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for the ON/OFF action.
• Setting range: EVT1 output low limit to 100%
EVT1 output low limit0%• Sets EVT1 output low limit value.
• Not available if(DO concentration input High/Low limits
independent action),(Water temperature input High/Low
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for the ON/OFF action.
• Setting range: 0% to EVT1 output high limit
Output ON Time when EVT1 Output ON
0 seconds• Sets Output ON time when EVT1 output is ON.
If ON time and OFF time are set, EVT1 output can be turned ON/OFF
in a configured cycle when EVT1 output is turned ON.(Fig. 6.5-5, p.39)• Not available if(DO concentration input High/Low limits
independent action),(Water temperature input High/Low
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for P action.
• Setting range: 0 to 10000 seconds

35

Character

Setting Item, Function, Setting Range
Factory Default
Output OFF Time when EVT1
0 seconds
Output ON• Sets Output OFF time when EVT1 output is ON.
If ON time and OFF time are set, EVT1 output can be turned ON/OFF
in a configured cycle when EVT1 output is turned ON.(Fig. 6.5-5) (p.39)• Not available if(DO concentration input High/Low limits(Water temperature input High/Low
independent action),
limits independent action),(DO % saturation input High/Low limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Not available for P action.
• Setting range: 0 to 10000 seconds
EVT1 High/Low limits
DO concentration input: 0.00 mg/L
independent lower side
Water temperature input: 0.0
DO % saturation input:
0.0%
value
Oxygen partial pressure input: 0.0 kPa• Sets the lower side value of EVT1 High/Low limits independentaction.
• Available for this setting item and all subsequent items when
(DO concentration input High/Low limits independent(Water temperature input High/Low limits
action),independent action),(DO % saturation input High/Low
limits independent action) or(Oxygen partial pressure
input High/Low limits independent action) is selected in [EVT1 type].
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT1 High/Low limits
DO concentration input: 0.00 mg/L
independent upper side
Water temperature input: 0.0
DO % saturation input:
0.0%
value
Oxygen partial pressure input: 0.0 kPa• Sets the upper side value of EVT1 High/Low limits independent action.
• Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT1 hysteresis
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa• Sets hysteresis of EVT1 High/Low limits independent action.
• Setting range: DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa

36

EVT1 Action
EVT1 TypeP Action

ON/OFF Action

EVT1 proportional band

• DO concentration
input low limit actionON• Water temperature
input low limit actionOFF

If Medium Value is selected in [EVT1hysteresis type]:
EVT1 ON sides
ON

EVT1
value

• DO % saturation
input low limit action• Oxygen partialpressure input low
limit action(Activated based on
the indication value.)OFF
EVT1 value
If Reference Value is selected in [EVT1hysteresis type]:
EVT1 ON side*

EVT1 OFF side*ON
OFF
EVT1 value
EVT1 proportional band

• DO concentration
input high limit actionON• Water temperature
input high limit actionOFF• DO % saturation
input high limit action

EVT1
value

If Medium Value is selected in [EVT1hysteresis type]:
EVT1 ON sides
ON
OFF
EVT1 value
If Reference Value is selected in [EVT1hysteresis type]:• Oxygen partialpressure input highlimit action(Activated based on
the indication value.)

EVT1 OFF side*

EVT1 ON side*ON
OFF

EVT1 value(Fig. 6.5-1)* Setting Example:
If [EVT1 ON side ()] is set to 0.00 or 0.0, EVT1 output can be turned ONat the value set in [EVT1 value ()].
)] is set to 0.00 or 0.0, EVT1 output can be turned OFF
If [EVT1 OFF side (at the value set in [EVT1 value ()].

37

EVT1 Type
ON/OFF Action• DO concentration input
High/Low limits independent
EVT1 hysteresis
EVT1 hysteresis
action• Water temperature input
ON
High/Low limits independentaction• DO % saturation input
OFF
High/Low limits independent
EVT1 High/Low limits EVT1 value
EVT1 High/Low limits
actionindependent
lower
side
independent
upper side
• Oxygen partial pressure
value
value
input High/Low limits
independent action(Activated based on theindication value.)(Fig. 6.5-2)• Sensor Cap Replacement Timer Output
If the set Sensor cap replacement timer value elapses, EVT1 output will be turned ON.
Designate the Sensor cap replacement timer value in [EVT1 value] in the Basic Function
Group.
ON
EVT1 output
OFF
Sensor cap replacement
timer remainder

0
Time

0
Sensor cap replacement
timer startSensor cap replacement
timer value has elapsed.

(Fig. 6.5-3)

38• Cleansing Output
EVT1 output is turned ON during cleansing time after ‘Cleansing inactive interval’ haselapsed.
After ‘Standby after cleansing’ has passed, this action is repeated.
While cleansing action is being performed using ‘Cleansing time’ and ‘Standby after
cleansing’, other outputs are in OFF status.
Measurement value (DO concentration, DO % saturation, Oxygen partial pressure, Water
temperature) will be retained.
Normal programmed action will be performed, except during Cleansing Perform action.
If power is turned ON again, starts from ‘Cleansing inactive interval’.

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 6.5-4)• Timing chart (Output ON time and OFF time when EVT1 output is ON)
ON
Actual EVT1 output
OFF

ON time is turned
OFF, caused by theactual EVT1 output
turning OFF.

ON
EVT1 output towhich ON time and
OFF time are set. OFF
ON
time

OFF
time

ON
time

(Fig. 6.5-5)

39

OFF
time

ON
time

6.6 EVT2 Action GroupTo enter EVT2 Action Group, follow the procedure below.
1
Press thekey 5 times in Display Mode or Cleansing Output
Mode.
2
Press thekey.
The unit proceeds to EVT2 Action Group, and ”EVT2 type“ appears.
Action, indication condition and setting range of EVT2 Action Group are the same as
those of EVT1 Action Group.
Substitute EVT1 with EVT2 ( with ), and refer to EVT1 Action Group (pp. 32 to
39).
(e.g.)

6.7 EVT3 Action Group
Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
To enter EVT3 Action Group, follow the procedure below.
1
Press thekey 6 times in Display Mode or Cleansing Output
Mode.
2
Press thekey.
The unit proceeds to EVT3 Action Group, and ”EVT3 type“ appears.
Action, indication condition and setting range of EVT3 Action Group are the sameas those of EVT1 Action Group.
Substitute EVT1 with EVT3 ( with ), and refer to EVT1 Action Group (pp. 32 to
39).
(e.g.)

6.8 EVT4 Action Group
Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
To enter EVT4 Action Group, follow the procedure below.
1
Press thekey 7 times in Display Mode or Cleansing Output
Mode.
2
Press thekey.
The unit proceeds to EVT4 Action Group, and ”EVT4 type“ appears.
Action, indication condition and setting range of EVT4 Action Group are the sameas those of EVT1 Action Group.
Substitute EVT1 with EVT4 ( with ), and refer to EVT1 Action Group (pp. 32 to
39).
(e.g.)

40

6.9 Communication Group
Available when Serial communication (C5 option) is ordered.
To enter the Communication group, follow the procedure below.
1
Press thekey 6 times in Display Mode or Cleansing Output
Mode.
If EVT3, EVT4 outputs (EVT3 option) are/is ordered, press thekey 8 times in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the Communication Group, and “Communication
protocol” will appear.
Character Setting Item, Function, Setting Range
Factory Default
Communication protocol
Shinko protocol• Selects communication protocol.
• Available when the Serial communication (C5) option is ordered.
: Shinko protocol•: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number0• Sets the instrument number of this unit. (The instrument numbers
should be set one by one when multiple instruments are connected,
otherwise communication is impossible.)• Available when the Serial communication (C5) option is ordered.
• Setting range: 0 to 95
Communication speed
9600 bps• Selects a communication speed equal to that of the host computer.
• Available when the Serial communication (C5) option is ordered.
: 9600 bps•: 19200 bps: 38400 bps
Data bit/Parity
7 bits/Even• Selects data bit and parity.
• Available when the Serial communication (C5) option is ordered.
: 8 bits/No parity•: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd

41

Character

Setting Item, Function, Setting Range

Factory Default

Stop bit
1 bit• Selects the stop bit.
• Available when the Serial communication (C5) option is ordered.
: 1 bit•: 2 bits

42

6.10 Cleansing GroupTo enter the Cleansing group, follow the procedure below.
1
Press thekey as many times as necessary until the leftcharacters appear in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the Cleansing Group, and “Cleansing time” will appear.
Character
Setting Item, Function, Setting Range
Factory Default
Cleansing time
30 seconds• Sets the time to perform cleansing. (Fig. 6.10-1)• Setting range: 10 to 120 seconds
Cleansing inactive interval
OFF (None)• Sets the cleansing inactive interval. (Fig. 6.10-1)• Setting range:(None), 10 to 240 minutes
Standby after cleansing
0 seconds• Sets standby time after cleansing action. (Fig. 6.10-1)• Setting range: 0 to 60 seconds• Cleansing Function
Selected EVT output is turned ON during cleansing time after ‘Cleansing inactive interval’has elapsed. After ‘Standby after cleansing’ has passed, cleansing action is repeated.
While cleansing action is performing using ‘Cleansing time’ and ‘Standby after cleansing’,
other outputs are in OFF status.
Measurement value (DO concentration, DO % saturation, Oxygen partial pressure, Water
temperature) will be retained.
Normal programmed action will be performed, except during Cleansing Perform action.
If power is turned on again, starts from ‘Cleansing inactive interval’.
Cleansing Output Action

Cleansing
Cleansing
Cleansing
Cleansing
Stop
Perform
Stop
Perform
Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 6.10-1)

Cleansing
Stop

Cleansing
Perform• If(Cleansing output) is selected in any other [EVT type] during cleansing action,
the current setting values (Cleansing time, Standby after cleansing, Cleansing inactive
interval) will be used for the selected cleansing output.
If cleansing action (caused by cleansing cycle) is activated in calibration mode, cleansing
action will not be performed in the current session.
• If(None) is selected in [Cleansing inactive interval], or if any item except(Cleansing output) is selected in [EVT type], Cleansing Output Mode will end,
and the unit will revert to Display Mode.
43

6.11 Basic Function GroupTo enter the Basic Function Group, follow the procedure below.
1
Press thekey as many times as necessary until the leftcharacters appear in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the Basic Function Group, and the “Set value lock” willappear.
Character Setting Item, Function, Setting Range
Factory Default
Set value lock
Unlock• Locks the set values to prevent setting errors.
(Unlock): All set values can be changed.
•(Lock 1) : None of the set values can be changed.
(Lock 2) : Only EVT1, EVT2, EVT3, EVT4 values can bechanged.
(Lock 3): All set values can be temporarily changed.
However, they revert to their previous value after
the power is turned off because they are notsaved in the non-volatile IC memory.
Do not change setting items (EVT1, EVT2, EVT3,
EVT4 types). If they are changed, they will affectother setting items.
Be sure to select Lock 3 when changing the set
value frequently via software communication.
(If a value set via software communication is thesame as the value before the setting, the value
will not be written in non-volatile IC memory.)
Backlight selection
All are backlit.
• Selects the display to backlight.
: All are backlit.
•: DO Display is backlit.
: Temperature Display is backlit.
: Action indicators are backlit.
: DO Display + Temperature Display are backlit.
: DO Display + Action indicators are backlit.
: Temperature Display + Action indicators are backlit.

44

Character

Setting Item, Function, Setting Range

Factory Default

DO colorRed• Selects a color for the DO Display.
: Green•: Red: Orange: DO color changes continuously.
The DO Display color changes according to[DO color reference value] and [DO color range] settings.
• When DO concentration is lower than[DO color reference value] – [DO color range]: Orange• When DO concentration is within[DO color range]: Green[DO color reference value]• When DO concentration is higher than[DO color reference value] + [DO color range]: Red
Orange

Green

Red: DO color reference value

Hys HysHys : DO color range(Fig. 6.11-1)
DO color reference value
0.10 mg/L• Sets a reference value for DO concentration color to be green when
(DO color changes continuously) is selected in [DO color].
• Setting range: 0.00 to 20.00 mg/L
DO color range
0.01 mg/L• Sets a range for DO concentration color to be green when
(DO color changes continuously) is selected in [DO color].
• Setting range: 0.01 to 20.00 mg/L
Backlight time
0 minutes• Sets time to backlight from no operation status until backlight isswitched off.
When set to 0, the backlight remains ON.
Backlight relights by pressing any key while backlight is OFF.
• Setting range: 0 to 99 minutes

45

Character

Setting Item, Function, Setting Range
Factory Default
Bar graph indication
No indication• Selects bar graph indication.
•: No indication: Transmission output 1: Transmission output 2
Segments light in accordance with the output.
Scale is -5 to 105%.
Segments light from left to the right in accordancewith the output.

[When the output is 50%]
-5%

50%

105%
Light from left to the right in accordance with the output.
(Fig. 6.11-2)
EVT output when input errors occur
Disabled• If input errors occur, EVT output can be Enabled or Disabled.
If “Enabled” is selected, EVT output will be maintained when input
errors occur.
If “Disabled” is selected, EVT output will be turned OFF when input
errors occur.
• Available when the following type is selected in [EVT type]:(DO concentration input high limit action)( DO concentration input low limit action)(Water temperature input high limit action)(Water temperature input low limit action)(DO % saturation input high limit action)(DO % saturation input low limit action)(Oxygen partial pressure input high limit action)(Oxygen partial pressure input low limit action): Enabled• Selection item:: Disabled
EVT1 value
365 days• Sets EVT1 (Sensor cap replacement timer) value.
• Available when(Sensor cap replacement timer) is
selected in [EVT1 type].
• Setting range: 0 to 1095 days
EVT1 ON delay time
0 seconds• Sets EVT1 ON delay time.
The EVT1 output does not turn ON after the input value exceeds the
EVT1 (Sensor cap replacement timer) value until the time set in[EVT1 ON delay time] elapses.
• Available when(Sensor cap replacement timer) is
selected in [EVT1 type].
• Setting range: 0 to 10000 seconds
46

Character

Setting Item, Function, Setting Range
Factory Default
EVT1 OFF delay time
0 seconds• Sets EVT1 OFF delay time.
The EVT1 output does not turn OFF after the input value exceeds the
EVT1 (Sensor cap replacement timer) value until the time set in[EVT1 OFF delay time] elapses.
• Available when(Sensor cap replacement timer) is
selected in [EVT1 type].
• Setting range: 0 to 10000 seconds
EVT2 value
365 days• Sets EVT2 (Sensor cap replacement timer) value.
• Available when(Sensor cap replacement timer) is selectedin [EVT2 type].
• Setting range: 0 to 1095 days
EVT2 ON delay time
0 seconds• Sets EVT2 ON delay time.
The EVT2 output does not turn ON after the input value exceeds the
EVT2 (Sensor cap replacement timer) value until the time set in[EVT2 ON delay time] elapses.
• Available when(Sensor cap replacement timer) is selectedin [EVT2 type].
• Setting range: 0 to 10000 seconds
EVT2 OFF delay time
0 seconds• Sets EVT2 OFF delay time.
The EVT2 output does not turn OFF after the input value exceeds the
EVT2 (Sensor cap replacement timer) value until the time set in[EVT2 OFF delay time] elapses.
• Available when(Sensor cap replacement timer) is selectedin [EVT2 type].
• Setting range: 0 to 10000 seconds
EVT3 value
365 days• Sets EVT3 (Sensor cap replacement timer) value.
• Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
Available when(Sensor cap replacement timer) is selectedin [EVT3 type].
• Setting range: 0 to 1095 days
EVT3 ON delay time
0 seconds• Sets EVT3 ON delay time.
The EVT3 output does not turn ON after the input value exceeds the
EVT3 (Sensor cap replacement timer) value until the time set in[EVT3 ON delay time] elapses.
• Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
Available when(Sensor cap replacement timer) is selectedin [EVT3 type].
• Setting range: 0 to 10000 seconds
47

Character

Setting Item, Function, Setting Range

Factory Default
0 seconds

EVT3 OFF delay time
• Sets EVT3 OFF delay time.
The EVT3 output does not turn OFF after the input value exceeds the
EVT3 (Sensor cap replacement time) value until the time set in [EVT3
OFF delay time] elapses.
• Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
(Sensor cap replacement timer) is selected
Available whenin [EVT3 type].
• Setting range: 0 to 10000 seconds
EVT4 value
365 days• Sets EVT4 (Sensor cap replacement timer) value.
• Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
(Sensor cap replacement timer) is selected
Available whenin [EVT4 type].
• Setting range: 0 to 1095 days
EVT4 ON delay time
0 seconds• Sets EVT4 ON delay time.
The EVT4 output does not turn ON after the input value exceeds the
EVT4 (Sensor cap replacement timer) value until the time set in[EVT4 ON delay time] elapses.
• Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
(Sensor cap replacement timer) is selected
Available whenin [EVT4 type].
• Setting range: 0 to 10000 seconds
EVT4 OFF delay time
0 seconds• Sets EVT4 OFF delay time.
The EVT4 output does not turn OFF after the input value exceeds the
EVT4 (Sensor cap replacement timer) value until the time set in[EVT4 OFF delay time] elapses.
• Available when EVT3, EVT4 outputs (EVT3 option) are/is ordered.
(Sensor cap replacement timer) is selected
Available whenin [EVT4 type].
• Setting range: 0 to 10000 seconds
Sensor cap replacement timer
365 daysremainder• Indicates the remaining time of the sensor cap replacement timer.
• Setting range: 0 to 1095 days48

6.12 Self-Check GroupTo enter the Self-Check Group, follow the procedure below.
1
Press thekey as many times as necessary until the leftcharacters appear in Display Mode or Cleansing Output Mode.
2 All lit
Press thekey.
The unit enters the Self-Check Group, and “All lit mode” will appear.
Every time thekey is pressed, modes progress as follows.

If thekey is held down for approx. 3 seconds at any setting mode, the unit willrevert to the Display Mode or Cleansing Output Mode.
Self-Check GroupAll lit mode
Individual lit mode
Key input mode
Output mode
Input mode

Each mode is described as follows.
Mode
Description
All lit mode
All indications are lit.
All displays and action indicators are lit.
Backlight changes sequentially every 0.5 seconds as shown
below.
Display
Contents
DO Display
Green
Red
OrangeUnlit
Green
Temperature Display
Green
Green
Green
Unlit
Green
Action indicators
OrangeOrangeOrange
Unlit
Orange49

Mode

Description
Eachsegment
willbelit
sequentially.
Individual lit mode
Each segment is lit sequentially every 0.5 seconds as shown
below.
Indication repeats as follows.
1
2
•••••
19
1
Order
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

Contents‘a’ segment of DO Display andTemperature Display‘b’ segment of DO Display andTemperature Display‘c’ segment of DO Display andTemperature Display‘d segment of DO Display andTemperature Display‘e’ segment of DO Display andTemperature Display‘f’ segment of DO Display andTemperature Display‘g’ segment of DO Display andTemperature Display‘dp’ segment of DO Display andTemperature Display‘h’ segment of DO Display andTemperature Display‘i’ segment of DO Display andTemperature Display‘k’ segment of DO Display andTemperature Display‘n’ segment of DO Display andTemperature Display
Bar graph Output Display
LOCK
LOCK indicator
EVT1
EVT1 indicator
EVT2
EVT2 indicator
EVT3
EVT3 indicator
EVT4
EVT4 indicator
T/R
T/R indicator

50

Mode
Key input mode

Output mode

Description
Characters allocated to each key are indicated.
The DO Display indicates, and the Temperature
Display indicates the following characters.
If 2 or more keys are pressed simultaneously,
will beindicated.
Temperature
Key Input
Display
When no key is pressed.
When thekey is pressed.
When thekey is pressed.
When 2 or more keys are pressed
simultaneously.
Each EVT output and Self-check output are turned ON.
Transmission output 1 and 2 will output 20 mA DC.
The DO Display indicates, and the Temperature
Display indicates the following characters.
Every time thekey is pressed, each output is turned ON
sequentially after checking.
Temperature
OutputDisplay
All EVT outputs and Self-check output
OFF.
Transmission output 1 and 2: 4 mA DC
EVT1 output ON
EVT2 output ON
EVT3 output ON
EVT4 output ON
Self-check output ON
Transmission output 1: 20 mA DC
Transmission output 2: 20 mA DC

51

Mode
Input mode

Description
Indicates each input.
Every time thekey is pressed, input checking is
performed, and the DO Display indicates the corresponding
input characters, and the Temperature Display indicates thecorresponding measured value.
DO Display
Temperature Display
DO concentration measured value
Water temperature measured value
DO % saturation measured value
Oxygen partial pressure measured value
Sensor cap serial number
If a communication error has occurred, or the DO Sensor is notconnected, the Temperature Display indicates.
If sensor cap of the DO Sensor is not attached, or it isincorrectly attached, the Temperature Display indicates.
If normal measurement value cannot be obtained from the DO
Sensor, the Temperature Display indicates.
Sensor cap serial number consists of 6 digits.
Since Temperature Display of this instrument has 5 digits, the
DO Display indicates MSD, and the Temperature Display
indicates the remaining 5 digits.
(e.g.) When serial number is 123456, it is alternately indicatedas follows.

52

6.13 Data Clear GroupTo enter the Data Clear Group, follow the procedure below.
1
Press thekey as many times as necessary until the leftcharacters appears in Display Mode or Cleansing Output Mode.
2
Press thekey.
The unit enters the Data Clear Group, and the “Data clear selection”
will appear.
Character Setting Item, Function, Setting Range
Factory Default
Data clear selection
Calibration value• Selects Calibration value or Set value to clear.
•: Calibration value: Set value
Data clear Stop/Perform
Data clear Stop
• Selects Data clear Stop/Perform.
•: Data clear Stop
: Data clear Perform
Depending on the selection in [Data clear Stop/Perform], the unit operates as shown
below.
• When ‘Data clear Stop’ is selected:
Data clearing is not executed, and the unit returns to the mode prior to Data clear
Stop (either Display Mode or Cleansing Output Mode).
• When ‘Data clear Perform’ is selected:
Data is cleared. The unit returns to the mode prior to Data clear Perform (either
Display Mode or Cleansing Output Mode).
(While data is being cleared, all indications are momentarily unlit.)53

7. Calibration
The following are descriptions for DO Concentration 1-point Calibration Mode, DO
Concentration 2-point Calibration Mode, Concentration Option Calibration Mode,
Transmission Output 1 and 2 Adjustment Modes.
7.1 DO Concentration Calibration

7.1.1 Preparation(1) Clean the DO Sensor body and measurement section, and remove all moisture.
(2) Remove the storage cap of the calibration container, and replace with acalibration cap (ventilating cap).

Calibration cap Storage cap(Fig. 7.1.1-1)(3) Keep the water, used for DO Sensor and calibration, at room temperature forapprox. 30 minutes.
(4) Select a mode from Sections 7.1.2 (DO Concentration 1-point CalibrationMode), 7.1.3 (DO Concentration 2-point Calibration Mode), and 7.1.4(Concentration Option Calibration Mode), and perform calibration.

54

7.1.2 DO Concentration 1-point Calibration Mode

Caution• If salinity concentration has been previously corrected, return the salinity
concentration correction value to 0 PSU, then start calibration.
Refer to [Salinity correction (p.27)].
If calibration is performed with salinity concentration being corrected, an error will
occur or calibration will not be performed normally.
• When using a sensor in geographically high elevation sites, perform altitude
correction for accurate calibration, then start calibration.
Refer to [Altitude correction (p.27)].
The unit cannot enter DO concentration 1-point calibration mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in• When[Set value lock (p.44)](Cleansing output) is selected in any of [EVT1 to EVT4 types (p.
• When32)], and while cleansing action is performing using the ‘Cleansing time’ and‘Standby after cleansing’• When the following errors have occurred.
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or the DO
Sensor is not connected.
Sensor cap of the DO Sensor is not attached, or it isincorrectly attached.
Normal measurement value cannot be obtained from the DO
Sensor.
The following outlines the calibration procedure.
(1) Pour approx. 10 mL of ion-exchanged water into the calibration container sponge.
(2) Insert the DO Sensor into the calibration container until the measurement sectionof the sensor is situated approximately 2 cm away from the sponge.
Approx. 2 cm

(Fig. 7.1.2-1)

55

(3) Allow it to settle, undisturbed, for 5 to 10 minutes.

Caution• Do not leave the sensor attached to the calibration container for more than 30
minutes. This will result in dew condensation in measurement section, which willaffect measurement value.
If dew condensation has occured, remove the moisture from the measurement
section, then start calibration again.
andkey (in that order) together for approx. 3(4) Press and hold theseconds in Display Mode or Cleansing Output Mode.
The unit moves to DO concentration 1-point calibration mode, and indicatesthe following.
Display
Indication Contents
DO Display
DO concentration measured value
Temperature Display
key.
(5) Press the
1-point calibration (100% saturation calibration) starts.
During calibration, the measurement value on the DO Display flashes.
Display
Indication Contents
DO Display
DO concentration measured value
flashes.
Temperature Display(6) Wait at least 10 seconds to stabilize the DO concentration measured value.
key.
(7) Press the
The measurement value will be fixed, and automatic calibration will be performed.
After calibration is finished, Displays show the following.
Display
Indication Contents
DO Display
Temperature Display
1-point calibration (100% saturation calibration) is completed.
key.
(8) Press the
The unit returns to DO concentration 1-point calibration mode.
If calibration cannot be performed during 1-point calibration (100% saturation
calibration) due to unstable DO concentration input or temperature correction error,.
etc., the DO Display turns off, and the Temperature Display indicatesorkey.
To release the error code, press the56

7.1.3 DO Concentration 2-point Calibration Mode

Caution• When using a sensor in geographically high elevation sites, perform altitude
correction for accurate calibration, then start calibration.
Refer to [Altitude correction (p.27)].
The unit cannot enter DO concentration 2-point calibration mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in• When[Set value lock (p.44)](Cleansing output) is selected in any of [EVT1 to EVT4 types (p.32)],• Whenand while cleansing action is performing using the ‘Cleansing time’ and ‘Standby after
cleansing’• When the following errors have occurred.
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or the DO
Sensor is not connected.
Sensor cap of the DO Sensor is not attached, or it is incorrectly
attached.
Normal measurement value cannot be obtained from the DO
Sensor.
The following outlines the calibration procedure.
(1) Pour approx. 10 mL of ion-exchanged water into the calibration container sponge.
(2) Insert the DO Sensor into the calibration container until the measurement sectionof the sensor is situated approximately 2 cm away from the sponge.
Approx. 2 cm

(Fig. 7.1.3-1)(3) Allow it to settle, undisturbed, for 5 to 10 minutes.

Caution• Do not leave the sensor attached to the calibration container for more than 30
minutes. This will result in dew condensation in measurement section, which willaffect measurement value.
If dew condensation has occured, remove the moisture from the measurement
section, then start calibration again.
57

(4) Press and hold theandkey (in that order) together for approx. 3
seconds in Display Mode or Cleansing Output Mode.
key.
(5) Press the
The unit moves to DO concentration 2-point calibration mode, and indicatesthe following.
Display
Indication Contents
DO Display
DO concentration measured value
Temperature Display
key.
(6) Press thest
1 -point calibration (100% saturation calibration) starts.
During calibration, the measurement value on the DO Display flashes.
Display
Indication Contents
DO Display
DO concentration measured value
flashes.
Temperature Display(7) Wait at least 10 seconds to stabilize the DO concentration measured value.
key.
(8) Press the
The measured value will be fixed, and automatic calibration will be performed.
After 1st-point calibration (100% saturation calibration) is finished, Displays show
the following.
Display
Indication Contents
DO Display
Temperature Display(9) Prepare a zero standard solution.
Zero standard solution is 100 mL of ion-exchanged water into which 5 g or moreof sodium sulfite has been added and completely dissolved.
(10) Take out the calibration container sponge used for 1st-point calibration (100%saturation calibration), and pour the zero standard solution into the calibration
container up to the Fill Line.

(Fig. 7.1.3-2)
58

(11) Insert the temperature sensor of the DO Sensor until it is immersed in the
prepared zero standard solution.

Caution• Insert the measurement section so that approximately 1 cm of gap is left
between it and the bottom of the calibration container.
• Insert the measurement section so that air bubbles cannot attach to it.
(12) Allow it to settle, undisturbed, for at least 5 minutes to stabilize the temperature.
key.
(13) Press thend
2 -point calibration (0-point calibration) starts.
During calibration, the measurement value on the DO Display flashes.
Display
Indication Contents
DO Display
DO concentration measured value
flashes.
Temperature Display(14) Wait at least 10 seconds to stabilize the DO concentration measured value.
key.
(15) Press the
The measurement value will be fixed, and automatic calibration will be performed.
After 2nd-point calibration (0-point calibration) is finished, Displays show thefollowing.
Display
Indication Contents
DO Display
Temperature Display
2-point calibration (both 100% saturation calibration and 0-point calibration) is
completed.
key.
(16) Press the
The unit returns to DO concentration 2-point calibration mode.
If calibration cannot be performed during DO concentration 2-point concentration
calibration due to unstable DO concentration input or temperature correction error,.
etc., the DO Display turns off, and the Temperature Display indicatesorkey.
To release the error code, press the59

7.1.4 Concentration Option Calibration Mode
Immerse the DO Sensor in an aqueous solution (of known concentration), then themeasurement value can be matched to the concentration.
Factory default value: 0.00 mg/L
DO concentration can be set within a range of 0.00 to 20.00 mg/L.
The unit cannot enter Concentration option calibration mode in the following cases.
(Lock 1),
(Lock 2) or(Lock 3) is selected in• When[Set value lock (p.44)](Cleansing output) is selected in any of [EVT1 to EVT4 types (p.
• When32)], and while cleansing action is performing using the ‘Cleansing time’ and‘Standby after cleansing’• When the following errors have occurred
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or the DO
Sensor is not connected.
Sensor cap of the DO Sensor is not attached, or it isincorrectly attached.
Normal measurement value cannot be obtained from the DO
Sensor.
The following outlines the calibration procedure.
(e.g.) Setting of the already-known concentration of 7.77 mg/L
(1) Pour the already-known concentration solution into the calibration container
up to the Fill Line.

(Fig. 7.1.4-1)(2) Insert the temperature sensor of the DO Sensor until it is immersed in the poured
solution.

Caution• Insert the measurement section so that approximately 1 cm of gap is left
between it and the bottom of the calibration container.
• Insert the measurement section so that air bubbles cannot attach to it.
60

(3) Allow it to settle, undisturbed, for at least 5 minutes to stabilize the temperature.
andkey (in that order) together for approx. 3(4) Press and hold theseconds in Display Mode or Cleansing Output Mode.
key twice.
(5) Press the
The unit moves to Concentration option calibration mode, and indicates thefollowing.
Display
Indication Contents
DO Display
Temperature Display
Concentration desired valueorkey,(6) Set the concentration desired value (7.77) with the
key. The following will be indicated.
and press the
Display
Indication Contents
DO Display
DO concentration measured value
flashes.
Temperature Display
key.
(7) Press the
The measurement value will be fixed, and calibration will be performed.
If concentration option calibration is finished, Displays show the following.
Display
Indication Contents
DO Display
Temperature Display
Concentration option calibration is completed.
key.
(8) Press the
The unit reverts to Concentration option calibration mode.
key.
(9) Press the
The unit reverts to Display Mode or Cleansing Output Mode.
If errors occur during concentration option calibration, the DO Display will turn off,.
and the Temperature Display will indicateorkey.
To release the error code, press the61

7.2 Transmission Output 1 Adjustment Mode
Fine adjustment of Transmission output 1 is performed.
This DO Meter (AER-102-DO) is adjusted at the factory, however, differences may
occur between the indication value of the connected equipment (recorders, etc.)
and output value of this unit. In this case, perform Transmission output 1 Zero andSpan adjustments.
The unit cannot enter Transmission output 1 Zero adjustment mode in the following
cases.
• When(Lock 1),
(Lock 2) or(Lock 3) is selected in[Set value lock (p.44)]• When(Cleansing output) is selected in any of [EVT1 to EVT4 types (p.
32)], and while cleansing action is performing using the ‘Cleansing time’ and‘Standby after cleansing’• During DO concentration calibration• When the following errors have occurred
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or the DO
sensor is not connected.
Sensor cap of the DO Sensor is not attached, or it isincorrectly attached.
Normal measurement value cannot be obtained from the DO
Sensor.
The following outlines the procedure for Transmission output 1 adjustment.
(1) Press and hold theandkey (in that order) together for approx. 3
seconds in Display Mode or Cleansing Output Mode.
The unit enters Transmission output 1 Zero adjustment, and indicates the following.
Display
Indication Contents
DO Display
Temperature Display
Indicates Transmission output 1 Zeroadjustment value.
(2) Set Transmission output 1 Zero adjustment value with the，keys, while
viewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 span
(3) Press thekey.
The unit enters Transmission output 1 Span adjustment mode, and indicates thefollowing.
Display
Indication Contents
DO Display
Temperature Display
Indicates Transmission output 1 Spanadjustment value.

62，
keys, while(4) Set Transmission output 1 Span adjustment value with theviewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 1 Span
(5) Press thekey.
The unit reverts to Transmission output 1 Zero adjustment mode.
Repeat steps (2) to (5) if necessary.
(6) To finish Transmission output 1 adjustment, press the
key in Transmission
output 1 Span adjustment mode.
The unit reverts to Display Mode or Cleansing Output Mode.
7.3 Transmission Output 2 Adjustment Mode
Fine adjustment of Transmission output 2 is performed.
This DO Meter (AER-102-DO) is adjusted at the factory, however, differences may
occur between the indication value of the connected equipment (recorders, etc.)
and output value of this unit. In this case, perform Transmission output 2 Zero andSpan adjustments.
The unit cannot enter Transmission output 2 Zero adjustment mode in the following
cases.
• When(Lock 1),
(Lock 2) or(Lock 3) is selected in[Set value lock (p.44)]• When(Cleansing output) is selected in any of [EVT1 to EVT4 types (p.
32)], and while cleansing action is performing using the ‘Cleansing time’ and‘Standby after cleansing’• During DO concentration calibration• When the following errors have occurred
Error CodeDescription
Non-volatile IC memory error
DO Sensor communication errors have occurred, or the DO
sensor is not connected.
Sensor cap of the DO Sensor is not attached, or it isincorrectly attached.
Normal measurement value cannot be obtained from the DO
Sensor.
The following outlines the procedure for Transmission output 2 adjustment.
(1) Press and hold theandkey (in that order) together for approx. 3
seconds in Display Mode or Cleansing Output Mode.
The unit enters Transmission output 2 Zero adjustment mode, and indicates thefollowing.
Display
Indication Contents
DO Display
Temperature Display
Indicates Transmission output 2 Zeroadjustment value.
63,
keys, while(2) Set Transmission output 2 Zero adjustment value with theviewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 spankey.
(3) Press the
The unit enters Transmission output 2 Span adjustment mode, and indicates thefollowing.
Display
Indication Contents
DO Display
Temperature Display
Transmission output 2 Span adjustment
value，
keys, while(4) Set Transmission output 2 Span adjustment value with theviewing the value indicated on the connected equipment (recorders, etc.).
Setting range: 5.00% of Transmission output 2 Span
(5) Press thekey.
The unit reverts to Transmission output 2 Zero adjustment mode.
Repeat steps (2) to (5) if necessary.
(6) To finish Transmission output 2 adjustment, press the
key in Transmission
output 2 Span adjustment mode.
The unit reverts to Display Mode or Cleansing Output Mode.

64

8. Measurement
8.1 Starting Measurement
After mounting to the control panel, wiring, setup and calibration are complete, turnthe power to the instrument ON. For approx. 8 seconds after the power is switched
ON, the following characters are indicated on the DO Display and Temperature
Display.
Display
DO Display
Temperature Display

Indication Contents[Version number(e.g.) 1.00]

During this time, all outputs are in OFF status, and action indicators turns off.
After that, measurement starts, indicating the item selected in [Backlight Selection(p. 44)].
Switching Between Modes
key is pressed, modes progress as follows.
Every time the

DO Concentration / Temperature Display Mode
DO % Saturation / Temperature Display Mode
Oxygen Partial Pressure / Temperature Display Mode

8.2 Outside Measurement Range
If DO concentration, DO % saturation, Oxygen partial pressure or temperature isoutside the range, the following will be indicated.
Input
DO concentration
DO % saturation
Oxygen partial pressure
Temperature

DO Display
Flashes at 20.00 or 0.00.
Flashes at 200.0 or 0.0.
Flashes at 150.0 or 0.0.
Measured value

65

Temperature Display
Measured value
Measured value
Measured value
Flashes at 50.0 or 0.0.

8.3 Errors
For the following errors, error code is indicated on the Temperature Display.
Error CodeDescription
Occurrence
Non-volatile IC memory error
Constantly
When
DO Sensor communication errors have occurred, or
measuring
DO Sensor is not connected.
After a command is sent to the DO Sensor, if there is no andcalibrating
response for 500 ms, the command will be sent again.
If no response occurs 4 times consecutively, this error
code will be displayed.
If communication status returns to normal, the error will
be released, and the unit will automatically return tonormal status.
When this error code is indicated, the previous
measured value is retained.
DO Sensor cap is not attached, or it is incorrectly
attached.
When
Calibration error (If input errors have occurred, or if
calibrating
calibration cannot be performed 30 minutes after
starting calibration)
Normal measurement value cannot be obtained fromWhen
the DO Sensor.
measuring andcalibrating
8.4 About Transmission Output 1 and Transmission Output 2
Converts DO concentration, water temperature, DO % saturation, Oxygen partialpressure or MV to analog signal every update cycle via communication, and outputs incurrent.
If Transmission output 1 high limit and low limit are set to the same value, Transmission
output 1 will be fixed at 4 mA DC.
If Transmission output 2 high limit and low limit are set to the same value, Transmission
output 2 will be fixed at 4 mA DC.
Resolution
12000
Current
4 to 20 mA DC (Load resistance: Max. 550 )Output accuracy Within 0.3% of Transmission output 1 or 2 span
For the following errors, Transmission output 1 or 2 will output 2 mA DC.
Error CodeDescription
DO Sensor communication error, or DO Sensor is not connected.
DO Sensor cap is not attached, or it is incorrectly attached.
Calibration error (If input errors have occurred, or if calibration cannot
be performed 30 minutes after starting calibration)
Normal measurement value cannot be obtained from the DO Sensor.

66

8.5 Self-Check Output
Self-check output is turned ON for the following errors.
Error CodeDescription
DO Sensor communication error, or DO Sensor is not connected.
Sensor cap of the DO Sensor is not attached, or it is incorrectly attached.
Calibration error (If input errors have occurred, or if calibration cannot
be performed 30 minutes after starting calibration)
Normal measurement value cannot be obtained from the DO Sensor.

678.6 EVT1 to EVT4 Outputs
If any one of the following actions is selected in [EVT1 type (p.32)], it will perform as(Fig. 8.6-1):(DO concentration input high limit action),(DO concentration input
low limit action),(Water temperature input high limit action),(Water
(DO % saturation input high limit action),
temperature input low limit action),(DO % saturation input low limit action),(Oxygen partial pressure
input high limit action),(Oxygen partial pressure input low limit action)
The same applies to EVT2, EVT3 and EVT4 outputs.
• EVT1 Action
EVT1 TypeP Action

ON/OFF Action

EVT1 proportional band

• DO concentration
input low limit action• Water temperature
input low limit action

If Medium Value is selected in [EVT1hysteresis type]:
EVT1 ON sides

ON
ON
OFF
EVT1
value

• DO % saturation
input low limit action• Oxygen partialpressure input low
limit action(Activated based on
the indication value.)OFF
EVT1 value
If Reference Value is selected in [EVT1hysteresis type]:
EVT1 ON side*

EVT1 OFF side*ON
OFF
EVT1 proportional band

• DO concentration
input high limit action

ON
ON• Water temperature
input high limit action• DO % saturation
input high limit action

EVT1 value
If Medium Value is selected in [EVT1hysteresis type]:
EVT1 ON sides

OFF
OFF
EVT1 value
If Reference Value is selected in [EVT1hysteresis type]:

EVT1
value

• Oxygen partialpressure input highlimit action(Activated based on
the indication value.)

EVT1 OFF side*

EVT1 ON side*ON
OFF

EVT1 value(Fig. 8.6-1)* Setting Example:
If [EVT1 ON side ()] is set to 0.00 or 0.0, EVT1 output can be turned ONat the value set in [EVT1 value ()].
)] is set to 0.00 or 0.0, EVT1 output can be turned OFF
If [EVT1 OFF side ()].
at the value set in [EVT1 value (68

If any one of the following actions is selected in [EVT1 type (p.32)], it will perform as(DO concentration input High/Low limits independent action),(Fig. 8.6-2):(Water temperature input High/Low limits independent action),(DO % saturation input High/Low limits independent action),(Oxygen partial pressure input High/Low limits independent action)
The same applies to EVT2, EVT3 and EVT4 outputs.
• EVT1 Action
EVT1 Action
ON/OFF Action• DO concentration input
EVT1 hysteresis
EVT1 hysteresis
High/Low limits
independent action• Water temperature input
ON
High/Low limits
independent actionOFF• DO % saturation input
EVT1 High/Low limits
EVT1 value EVT1 High/Low limits
High/Low limits
independent lower side
independent upper side
independent action
value
value
• Oxygen partial pressure
input High/Low limits
independent action(Activated based on theindication value.)(Fig. 8.6-2)• P Action
Within the proportional band, the manipulated variable is output in proportion to
the deviation between the EVT1 value and measured value.
EVT1 Type
Description
If measured value is lower than [EVT1 value – EVT1
• DO concentration input low limit proportional band], EVT1 output is turned ON.
• Water temperature input low limit If measured value enters within the proportional• DO % saturation input low limit band, EVT1 output is turned ON/OFF in EVT1
proportional cycles.
• Oxygen partial pressure input
If measured value exceeds the EVT1 value, EVT1
low limit
output is turned OFF.
If measured value is higher than [EVT1 value +• DO concentration input high limit EVT1 proportional band], EVT1 output is turned ON.
• Water temperature input high limit If measured value enters within the proportional• DO % saturation input high limit band, EVT1 output is turned ON/OFF in EVT1
proportional cycles.
• Oxygen partial pressure input
If measured value drops below the EVT1 value,high limit
EVT1 output is turned OFF.
• ON/OFF Action
EVT1 Type
Description• DO concentration input low limit
If measured value is lower than EVT1 value,• Water temperature input low limit EVT1 output is turned ON.
• DO % saturation input low limit
If measured value exceeds the EVT1 value, EVT1
• Oxygen partial pressure input
output is turned OFF.
low limit• DO concentration input high limit If measured value is higher than EVT1 value,• Water temperature input high limit EVT1 output is turned ON.
• DO % saturation input high limit
If measured value drops below the EVT1 value,• Oxygen partial pressure input
EVT1 output is turned OFF.
high limit
69

If ON and OFF time are set in [Output ON/OFF Time when EVT1 Output ON (pp.35, 36)],
and when EVT1 output is turned ON, EVT1 output is turned ON/OFF at constant intervals.
Timing chart (Output ON time and OFF time when EVT1 output is ON)
ON
Actual EVT1 output
OFF
EVT1 output to ON
which ON timeand OFF time OFF
are set.

ON time is turned
OFF, caused by theactual EVT1 output
turning OFF.
ON
time

OFF
time

ON
time

OFF
time

ON
time

(Fig. 8.6-3)
EVT output status can be read by reading Status flag 2 (EVT1, EVT2, EVT3, EVT4
output flag bit) in Serial communication (C5 option).
EVT output status, when input errors occur, differs depending on the selection in [EVT
output when input errors occur (p.46)].
• If(Disabled) is selected: EVT output is turned OFF when input errors occur.
• If(Enabled) is selected: EVT output is maintained when input errors occur.

70

8.7 Sensor Cap Replacement Timer Output(Sensor cap replacement timer output) is selected in any of [EVT1 to
When
EVT4 types (p. 32)], the unit operates as follows.
(1) If sensor cap replacement timer value has elapsed, the selected EVT output will beturned ON. (*1)
The DO Display indicates DO concentration measured value andalternately, informing the user to replace the sensor cap. (*2)(2) Replace the sensor cap.
After replacing the sensor cap, this unit automatically resets the Sensor cap
replacement remainder to the Sensor cap replacement timer value.
Sensor Cap Replacement Timer Output

EVT output

ONOFF

Sensor cap replacement
timer remainder

0

Time

0
Sensor cap replacement
timer starts.

Sensor cap replacement
timer value has elapsed.

(Fig. 8.7-1)(*1) Even if power to the instrument is turned OFF and ON, EVT output remains ON
until the sensor cap is replaced.
(*2) After Sensor cap replacement timer value has elapsed, and if an error has occurred
simultaneously,
and the error code will be displayed alternately.
After Sensor cap replacement timer value has elapsed, and if Outside measurement
range error has occurred simultaneously,
and the Outside measurement
range value will be displayed alternately.

718.8 Cleansing Output
If(Cleansing output) is selected in any of [EVT1 to EVT4 type (p. 32)], theunit will enter Cleansing Output Mode.
After ‘Cleansing inactive interval’ has elapsed, the selected EVT output is turned ON
during the ‘cleansing time’.
After ‘Standby after cleansing’ has passed, the above action is repeated.
While cleansing is being performed using ‘Cleansing time’ and ‘Standby after
cleansing’, other outputs are in OFF status.
Measured values (DO concentration, DO % saturation, Oxygen partial pressure, watertemperature) are retained.
Normal programmed action will be performed, except during ‘Cleansing Perform’.
When power is turned ON again, starts from ‘Cleansing inactive interval’.
• Cleansing Output Action

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

Cleansing
Perform

Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 8.8-1)• If(Cleansing output) is selected in any other [EVT type] during cleansing
action, the current setting values (Cleansing time, Standby after cleansing, Cleansing
inactive interval) will be used for the selected cleansing output.
If cleansing action (caused by cleansing cycle) is activated in calibration mode,cleansing action will not be performed in the current session.
• If(None) is selected in [Cleansing inactive interval], or if any item except(Cleansing output) is selected in [EVT1 to EVT4 types (p.32)], Cleansing
Output Mode will end, and the unit will revert to Display Mode.

If(Cleansing output) is selected in any of [EVT1 to EVT4 types (p.32)], andif(None) is selected in [Cleansing inactive interval], only Forced cleansing
mode will be enabled.
72

8.9 Forced Cleansing Mode
To enter the Forced cleansing mode, press the
key for approx. 3 seconds.
In Forced cleansing mode, cleansing is performed using ‘Cleansing time’ and ‘Standby
after cleansing’. After cleansing action is finished, the unit automatically reverts to
Cleansing Output Mode.
This mode will not be accessible by the
key if programmed cleansing is currently
being performed.
During Forced cleansing mode, if programmed cleansing action initiates after‘Cleansing inactive interval’ has passed, the programmed cleansing action will not be
performed in the current session.
Forced Cleansing Mode Action

Key operation

Cleansing
Stop

Cleansing
Perform

Cleansing
Stop

During cleansing action, even if the
key is pressed, the unit cannot enter
Forced cleansing mode.
Ccy: Cleansing inactive interval
Ctm: Cleansing time
Cit: Standby after cleansing(Fig. 8.9-1)

73

Cleansing Cleansing
Stop
Perform

Cleansing
Perform

During Forced cleansing mode, theprogrammed cleansing action will be
invalidated.

9. Specifications
9.1 Specifications
9.1.1 Standard Specifications
RatingInput
Rated scale
DO concentration
DO % saturation
Oxygen partialpressure
Temperature
Input
Optical DO Sensor
Power supply voltage Model
Power supply
voltageAllowable voltage
fluctuation range
General Structure
External dimensions
Mounting
Case
Front panel
Indicating structure

Setting structure

Input Range
0.00 to 20.00 mg/L
0.0 to 200.0%
0.0 to 150.0 kPa

Resolution
0.01 mg/L
0.1%
0.1 kPa

0.0 to 50.0

0.1

AER-102-DO
100 to 240 V AC
50/60 Hz85 to 264 V AC

AER-102-DO 1
24 V AC/DC
50/60 Hz
20 to 28 V AC/DC

48 x 96 x 98.5 mm (W x H x D)
Flush (Applicable panel thickness 1 to 8 mm)
Material: Flame-resistant resin, Color: Black
Membrane sheet
Display
DO Display
11-segment LCD display 5-digits
Backlight Red/Green/Orange
Character size: 14.0 x 5.4 mm (H x W)
Temperature
11-segment LCD display 5-digits
Display
Backlight Green
Character size: 10.0 x 4.6 mm (H x W)
Output Display
Bar graph LCD display 22-dots
Backlight Green
Action indicators: Backlight Orange
EVT1
EVT1 output (Contact output 1) ON: Lit
EVT2
EVT2 output (Contact output 2) ON: Lit
EVT3
EVT3 output (Contact output 3) ON: Lit
EVT4
EVT4 output (Contact output 4) ON: Lit
T/R
Serial communication TX output (transmitting):
Lit
LOCK
Lock 1, Lock 2 or Lock 3 is selected: Lit
Input system using membrane sheet key

Indication Performance
Indication accuracy
Depends on the accuracy of Optical DO Sensor.
Time accuracy
Within 1% of setting time
Data update cycle
5 seconds
74

Standard Function
Calibration

DO concentration 1-point calibration, DO concentration
2-point calibration, Concentration option calibration
Moving average is calculated from the desired output
Signal output
responsetime, and the resulting value is updated every
response time
Data update cycle (5 seconds) as a measurement value.
However, signal output response time setting will be
invalidated during DO concentration calibration mode,
Transmission output 1 or 2 adjustment modes.
Converts any one of – DO concentration, water temperature,
Transmission output
DO % saturation, Oxygen partial pressure or MV – to an1
analog signal every update cycle, and outputs in current.
If Transmission output 1 high limit and low limit are set tothe same value, Transmission output 1 will be fixed at 4 mA
DC.
Resolution
12000
Current
4 to 20 mA DC(Load resistance, Max. 550 )OutputWithin 0.3% of Transmission output 1 span
accuracy
Transmission
Fine adjustment of the Transmission output 1 is performed
output 1 adjustment via Transmission output 1 Zero and Span adjustments.
Transmission
Selects Transmission output 1 output status when
output 1 status
calibrating DO concentration.
when calibrating
Last value
Retains the last value before DO
HOLD
concentration calibration, and outputs it.
Set value
Outputs the value set in [Transmission
HOLD
output 1 value HOLD when calibrating].
Measured
Outputs the measured value whenvalue
calibrating DO concentration.
Converts any one of – DO concentration, waterTransmission output
temperature, DO % saturation, Oxygen partial pressure or2
MV – to an analog signal every update cycle, and outputs incurrent.
If Transmission output 2 high limit and low limit are set tothe same value, Transmission output 2 will be fixed at 4 mA
DC.
Resolution 12000
4 to 20 mA DC
Current(Load resistance: Max. 550 )Within 0.3% of Transmission output 2 span
Outputaccuracy
Fine adjustment of the Transmission output 2 is performed
Transmission
via Transmission output 2 Zero and Span adjustments.
output 2 adjustment
Selects Transmission output 2 output status whenTransmission
calibrating DO concentration.
output 2 statuswhen calibrating
Last value
Retains the last value before DO
HOLD
concentration calibration, and outputs it.
Set value
Outputs the value set in [Transmission
HOLD
output 2 value HOLD when calibrating].
Measured
Outputs the measured value whenvalue
calibrating DO concentration.
75

Self-check output

EVT output
OutputSelf-check output is turned ON when the following error
has occurred.
DO Sensor communication errors haveoccurred, or DO Sensor is not connected.
Sensor cap of the DO Sensor is not attached,or it is incorrectly attached.
Calibration error(If input errors have occurred, or if calibration
cannot be performed 30 minutes after
starting calibration.)
Normal measurement value cannot be
obtained from the DO Sensor.
P action: When setting the proportional band to any othervalue except 0.00 or 0.0
ON/OFF action: When setting the proportional band to
0.00 or 0.0
DO concentration input
EVT
0.00 to 20.00 mg/L
Water
temperature
input
proportional
0.0 to 50.0
DO % saturation input
band
0.0 to 200.0%
Oxygen partial
0.0 to 150.0 kPa
pressure input
EVT
1 to 300 seconds
proportionalcycle
DO concentration input
EVT
0.00 to 4.00 mg/L
Water
temperature
input
ON side,
0.0 to 10.0
DO % saturation input
OFF side
0.0 to 40.0%
Oxygen partial
0.0 to 30.0 kPa
pressure input
Output high, 0 to 100%
low limits
DO concentration input
EVT
0.00 to 20.00 mg/L
Water temperature input 0.0 to 50.0
High/Low
DO % saturation input
limits0.0 to 200.0%
independent Oxygen partial
0.0 to 150.0 kPa
upper, lower pressure input
side value
EVThysteresis

DO concentration input
Water temperature input
DO % saturation input
Oxygen partialpressure input

76

0.01 to 2.00 mg/L
1.0 to 5.0
0.1 to 20.0%
0.1 to 15.0 kPa

EVT typeOutputEVT ON delaytime
EVT OFF delaytime
Output ON Time/OFF Time when
EVT Output ON
Sensor cap
replacement timer
outputCleansing output

Selectable by keypad operation.
• No action• DO concentration input high limit action• DO concentration input low limit action• Water temperature input high limit action• Water temperature input low limit action• DO % saturation input high limit action• DO % saturation input low limit action• Oxygen partial pressure input high limit action• Oxygen partial pressure input low limit action• Sensor cap replacement timer• Cleansing output• DO concentration input High/Low limits independent action• Water temperature input High/Low limits independent action• DO % saturation input High/Low limits independent action• Oxygen partial pressure input High/Low limits independentactionRelay contact 1a1b
3 A 250 V AC (resistive load)
Control
1 A 250 V AC (inductive load cos =0.4)
capacity
Electrical life
100,000 cycles
0 to 10000 seconds
0 to 10000 seconds
If ON time and OFF time are set, the output can be turned
ON/OFF in a configured cycle when EVT output is ON.
The selected EVT output is turned ON after sensor cap
replacement timer value has elapsed (Sensor cap
replacement timer remainder is “0”).
areDO concentration measured value andalternately indicated on the DO Display.
Cleansing Output Mode:
After ‘Cleansing inactive interval’ has elapsed, the selected
EVT output is turned ON during the preset ‘Cleansing time’.
After ‘Standby after cleansing’ has passed, the above action
is repeated.
While cleansing is being performed using ‘Cleansing time’and ‘Standby after cleansing’, other outputs are in OFF
status.
The measured values (DO concentration, DO % saturation,
Oxygen partial pressure, water temperature) are retained.
Normal programmed action will be performed, except during‘Cleansing Perform’.
When power is turned ON again, starts from ‘Cleansing
inactive interval’.

77Forced Cleansing Mode:key for approx. 3 seconds, the unit
By pressing theenters Forced cleansing mode. In Forced cleansing mode,cleansing is performed using ‘Cleansing time’ and ‘Standby
after cleansing’.
After cleansing action is finished, the unit automaticallyreverts to Cleansing Output Mode.
This mode will not be accessible by the
key ifprogrammed cleansing is currently being performed.
During Forced cleansing mode, if programmed cleansing
action initiates after ‘Cleansing inactive interval’ has passed,
the programmed cleansing action will not be performed in thecurrent session.
Insulation, Dielectric Strength
Circuit insulation
configuration

EVT1

Transmission
output 1

EVT2

Transmission
output 2Powercircuit

EVT4

Selfcheckoutput

CPU1
Electrically insulated
CPU2
Sensorinput
RS-485

SerialCommunication
RS-485

EVT3: When the corresponding option is ordered.

Insulation Resistance: 10 M
Dielectric strength

Attached Function
Set value lockminimum, at 500 V DC

Power terminal – ground (GND): 1.5 kV AC for 1 minute
Input terminal – ground (GND): 1.5 kV AC for 1 minute
Input terminal – power terminal: 1.5 kV AC for 1 minute

Lock 1: None of the set values can be changed.
Lock 2: Only EVT1, EVT2, EVT3, EVT4 values can bechanged.
Lock 3: All set values can be temporarily changed.
However, they revert to their previous value after
the power is turned off because they are not savedin the non-volatile IC memory.

78

Outsidemeasurement
range

If inputs (DO concentration, DO % saturation, Oxygen
partial pressure, Temperature) are outside themeasurement range, the following will be indicated.
Temperature
Display
DO concentration
Flashes at 20.00 or
Measured
0.00.
value
DO % saturation
Flashes at 200.0 or
Measured
0.0.
value
Oxygen partial
Flashes at 150.0 or
Measuredpressure
0.0.
value
Temperature
Measured value
Flashes at
50.0 or 0.0.
The setting data is backed up in the non-volatile IC memory.
DO Display

Input

Power failurecountermeasureSelf-diagnosis

Warm-up Indication

DO concentration
color

The CPU is monitored by a watchdog timer, and if anabnormal status occurs, the AER-102-DO is switched towarm-up status.
For approx. 8 seconds after the power is switched ON,
characters below are indicated on the DO Display andTemperature Display.
DO Display
Temperature Display[Version No. (e.g.) 1.00]
Selects the color of the DO Concentration Display.
[DO Color (P.45)]
DO Color
Selection Item
Green
Red
OrangeDO color changes continuously.
DO Color:
The DO color changes according to [DO color reference
value (p.45)] and [DO color range (p.45)] settings.
• When DO concentration is lower than [DO color
reference value] – [DO color range]: Orange• When DO concentration is within [DO color reference[DO color range]: Greenvalue]• When DO concentration is higher than [DO color
reference value] + [DO color range]: Red
Orange

Green

Red: DO color reference value

Hys Hys79

Hys : DO color range

Bar graph indication

When(Transmission output 1)(Transmission output 2) is selected in [Bar graph indication(p.46)], segments light in accordance with the output.
Scale is -5 to 105%. Segments light from left to the rightin accordance with the output.
(e.g.) When the output is 50%

-5%

50%

105%

Light from left to the right in accordance with the output.
Error indication
Error Code

Other
Power consumption
Ambient temperature
Ambient humidity
WeightAccessories included

Accessories soldseparately

For the following errors, the corresponding error code isindicated on the Temperature Display.
OccurDescription
rence
Non-volatile IC memory error
Constantly
DO Sensor communication errors haveWhenoccurred, or DO Sensor is not connected.
measuring
After a command is sent to the DO Sensor,
andif there is no response for 500 ms, thecalibrating
command will be sent again.
If no response occurs 4 times consecutively,
this error code will be indicated.
If communication status returns to normal,
the unit will return to normal status.
When this error code is displayed, theprevious measured value is retained.
DO Sensor cap is not attached, or it isincorrectly attached.
Calibration error (when input errors haveWhenoccurred, or when calibration cannot becalibrating
performed 30 minutes after starting calibration)
When
Normal measurement value cannot bemeasuringobtained from the DO Sensor.
andcalibrating
Approx. 14 VA
0 to 50
35 to 85 %RH (Non-condensing)
Approx. 290 g
Unit label: 1 sheet
Mounting brackets: 1 set
Instruction manual: 1 copy
When Serial communication (C5 option) is ordered:Wire harness C5J (0.2 m): 1 length
Wire harness C0J (3 m): 1 length
When EVT3, EVT4 outputs (Contact output 3, 4) (EVT3
option) are/is ordered:Wire harness HBJ (3 m): 2 lengths
Terminal cover80

9.1.2 Optional Specifications
Serial Communication (Option code: C5)
Serial communication The following operations can be carried out from anexternal computer.
(1) Reading and setting of various set values(2) Reading of DO concentration, DO % saturation,
Oxygen partial pressure, temperature and status(3) Function change, adjustment(4) Reading and setting of user save area
1.2 km (Max), Cable resistance value: Within 50
Cable length(Terminators are not necessary, but if used, use 120
minimum on both sides.)Communication
EIA RS-485
line
Communication Half-duplex communication
methodCommunication 9600, 19200, 38400 bps (Selectable by keypad.)
speed
Synchronization Start-stop synchronization
methodCode form
Communication
protocolData Bit/Parity
Stop bit
Error correction
Error detection
Data format

ASCII, Binary
Shinko protocol, MODBUS ASCII, MODBUS RTU(Selectable by keypad.)
8 bits/No parity, 7 bits/No parity, 8 bits/Even, 7 bits/Even,
8 bits/Odd, 7 bits/Odd (Selectable by keypad.)1, 2 (Selectable by keypad.)
Command request repeat system
Parity check, Checksum (Shinko protocol), LRC (MODBUS
protocol ASCII), CRC-16 (MODBUS protocol RTU)
Communication
ShinkoMODBUSMODBUS
ProtocolProtocol
ASCII
RTU
Start bit
1
1
1
7
7 (8)
8
Data bit
SelectableEven
No parity(No parity, Odd) (Even, Odd)
ParityEven
Selectable
Selectable
1
(2)
1 (2)
1
Stop bit
Selectable
Selectable

EVT3, EVT4 Outputs (Contact output 3, 4) (Option code: EVT3)
EVT3, EVT4 outputs
Same as EVT output (pp.76 to 78)(Contact output 3, 4)81

9.2 DO Sensor Specifications
Model
Power supply
Sensor cap replacement
frequency
Sensor cap storage period

Measurement watertemperature
Material
External dimensions
WeightDegree of protection
Accessories soldseparately

DOS-20
12 to 36 V DC
One (1) year after installing the DO Sensor(Recommended)
Two (2) years from the date of manufacture (Whenstoring in the designated container)
Storage temperature: 1 to 60
0 to 50 (Not freezing)ABS
Approx. 44 x 203 mm
Approx. 850 g (including 10 m cable)
IP68 (Underwater type, Maximum depth of 200 m)
DO Sensor attachment:
DA-1
Sensor cap for replacement:
DOS-CP
Stanchion pole:
PS-1
Fixing bracket for stanchion pole: PS-TK

82

10. Troubleshooting
If any malfunction occurs, refer to the following items after checking that power is being
supplied to the AER-102-DO.
10.1 Indication
ProblemPossible Cause
Solution
The DO Display/
The time set in [Backlight
If any key is pressed while displays
Temperature Display
time (p.45)] has passed.
are unlit, it will re-light.
are unlit.
Set the backlight time to a suitable
time-frame.
Indication of the DO
DO concentration
Perform DO concentration
Display/Temperature
calibration may not havecalibration.
Display is unstable or finished.
irregular.
Specification of the DO
Replace the sensor with a suitable
Sensor may not be suitable. one.
There may be equipment
Keep AER-102-DO clear of any
that interferes with or makes potentially disruptive equipment.
noise near the AER-102-DO.
is flashingThis shows that DO Sensor Turn the power OFF, and check theon the Temperaturecommunication errors have wiring of the DO Sensor.
Display.
occurred, or the DO Sensor If the DO Sensor is malfunctioning,
is not connected.
repair or replace the sensor.
is flashingThis occurs when sensor
For correct attachment, refer toon the Temperature
cap of the DO Sensor is not Section “3.5.4 Attaching the
Display.
attached, or when it is
Sensor Cap” (p.15).
incorrectly attached.
Remove dirt or air bubbles from theis flashing
Calibration error
measurement section, and calibrateon the Temperature
again.
Display.
If errors occur again, repair or
replace the DO Sensor.
If salinity concentration correction
has been performed, return thesalinity concentration correction
value to 0 PSU, and calibrate
again.
Normal measured value
Repair or replace the DO Sensor.
is flashingcannot be obtained from the Contact our agency or us.
on the Temperature
DO Sensor.
Display.
is flashingon the Temperature
Display.

Internal memory is
defective.

Contact our agency or us.

83

10.2 Key Operation
Problem
Unable to set values.
The values do notchange by,keys.

Unable to enter
Forced cleansing
mode.

Unable to enter acalibration mode.

Possible Cause(Lock 1) or(Lock 2) isselected in [Set value lock(p. 44)]. (When Lock 1 orLock 2 is selected, the
LOCK indicator is lit.)(Cleansing
output) is not selected inany of [EVT1 to EVT4
types (p. 32)].
Cleansing action is
performing using the‘Cleansing time’ and‘Standby after cleansing’.
(Lock 1),
(Lock 2) or(Lock 3) has been
selected in [Set value lock(p.44)]. (When Lock 1, Lock2 or Lock 3 is selected, the
LOCK indicator is lit.)(Cleansing
output) has been selectedin any of [EVT1 to EVT4
types (p. 32)], and cleansing
action is performing using
the ‘Cleansing time’ and‘Standby after cleansing’.

84

SelectSolution(Unlock).

(Cleansing output)
Selectin any of [EVT1 to EVT4 types(p.32)].
Execute Forced cleansing after
cleansing action is completed.

Select(Unlock).

Perform calibration after cleansing
action is completed.

11. Character Tables
The following shows our character tables. Use data column for your reference.
11.1 Setting Group List
Character

Setting GroupDO Concentration Input Group

Reference Section, Page
See Section 11.5 (p.86).

Transmission Output 1 GroupSee Section 11.6 (p.87).

Transmission Output 2 GroupSee Section 11.7 (p.88).

EVT1 Action GroupSee Section 11.8 (pp.89 to 91).

EVT2 Action GroupSee Section 11.9 (pp.92 to 94).

EVT3 Action groupSee Section 11.10 (pp.95 to 97).

EVT4 Action GroupSee Section 11.11 (pp.98 to 100).

Communication GroupSee Section 11.12 (p.101).

Cleansing GroupSee Section 11.13 (p.101).

Basic Function GroupSee Section 11.14 (pp.102, 103).

Self-Check GroupSee Section 11.15 (pp.103, 104).

Data Clear GroupSee Section 11.16 (p.104).

11.2 DO Concentration Calibration
Character
Measuredvalue (*)

Setting Item, Setting Range
DO concentration 1-pointcalibration mode

Measuredvalue (*)

DO concentration 2-pointcalibration mode

Concentration

Concentration option
calibration mode
Setting range: 0.00 to 20.00 mg/L

desired value(*) DO concentration measured value flashes.

85

Factory Default

0.00 mg/L

Data

11.3 Transmission output 1 Adjustment Mode
Character
Setting Item, Setting Range
Factory Default
Transmission output 1 Zero
0.00 mg/L
adjustment value
Setting range: 5.00% of Transmission output 1 span
Transmission output 1 Span
0.00 mg/L
adjustment value
Setting range: 5.00% of Transmission output 1 span
11.4 Transmission output 2 Adjustment Mode
Character
Setting Item, Setting Range
Factory Default
Transmission output 2 Zero
0.00 mg/L
adjustment value
Setting range: 5.00% of Transmission output 2 span
Transmission output 2 Span
0.00 mg/L
adjustment value
Setting range: 5.00% of Transmission output 2 span
11.5 DO Concentration Input Group
Character
Setting Item, Setting Range
Signal output response time
Setting range: 5 to 600 seconds
Salinity correction
Setting range: 0 to 42 PSU
Altitude correction
Setting range: 0 to 5000 m

86

Factory Default
60 seconds
0 PSU
0m

Data

Data

Data

11.6 Transmission Output 1 Group
Character

Setting Item, Setting Range
Transmission output 1 type

Factory Default
DO concentrationtransmission: DO concentration transmission: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission: EVT1 MV transmission: EVT2 MV transmission: EVT3 MV transmission (*): EVT4 MV transmission (*)
Transmission output 1 high limit
20.00 mg/L
Setting range:
DO concentration: Transmission output 1 low limit to 20.00 mg/L
Water temperature: Transmission output 1 low limit to 50.0
DO % saturation: Transmission output 1 low limit to 200.0%
Oxygen partial pressure: Transmission output 1 low limit to 150.0 kPa
EVT1 to EVT4 MV: Transmission output 1 low limit to 100.0%
Transmission output 1 low limit
0.00 mg/L
Setting range:
DO concentration: 0.00 mg/L to Transmission output 1 high limit
Water temperature: 0.0 to Transmission output 1 high limit
DO % saturation: 0.0% to Transmission output 1 high limit
Oxygen partial pressure: 0.0 kPa to Transmission output 1 high limit
EVT1 to EVT4 MV: 0.0% to Transmission output 1 high limit
Transmission output 1 status
Last value HOLD
when calibrating: Last value HOLD
: Set value HOLD (Outputs the value set in[Transmission output 1 value HOLD when calibrating].): Measured value (Outputs the measured value
when calibrating DO concentration.)Transmission output 1 value
0.00 mg/L
HOLD when calibrating
Setting range:
DO concentration transmission: 0.00 to 20.00 mg/L
Water temperature transmission: 0.0 to 50.0
DO % saturation transmission: 0.0 to 200.0%
Oxygen partial pressure transmission: 0.0 to 150.0 kPa
EVT1 to EVT4 MV transmission: 0.0 to 100.0%(*) Available only when EVT3, EVT4 outputs (EVT3 option) are/is ordered.

87

Data

11.7 Transmission Output 2 Group
Character

Setting Item, Setting Range
Transmission output 2 type

Factory Default
DO concentrationtransmission: DO concentration transmission: Water temperature transmission: DO % saturation transmission: Oxygen partial pressure transmission: EVT1 MV transmission: EVT2 MV transmission: EVT3 MV transmission (*): EVT4 MV transmission (*)
Transmission output 2 high limit
20.00 mg/L
Setting range:
DO concentration: Transmission output 2 low limit to 20.00 mg/L
Water temperature: Transmission output 2 low limit to 50.0
DO % saturation: Transmission output 2 low limit to 200.0%
Oxygen partial pressure: Transmission output 2 low limit to 150.0 kPa
EVT1 MV to EVT4 MV: Transmission output 2 low limit to 100.0%
Transmission output 2 low limit
0.00 mg/L
Setting range:
DO concentration: 0.00 mg/L to Transmission output 2 high limit
Water temperature: 0.0 to Transmission output 2 high limit
DO % saturation: 0.0% to Transmission output 2 high limit
Oxygen partial pressure: 0.0 kPa to Transmission output 2 high limit
EVT1 MV to EVT4 MV: 0.0% to Transmission output 2 high limit
Transmission output 2 status
Last value HOLD
when calibrating: Last value HOLD
: Set value HOLD (Outputs the value set in[Transmission output 2 value HOLD when calibrating].): Measured value (Outputs the measured value
when calibrating DO concentration.)Transmission output 2 value
0.00 mg/L
HOLD when calibrating
Setting range:
DO concentration transmission: 0.00 to 20.00 mg/L
Water temperature transmission: 0.0 to 50.0
DO % saturation transmission: 0.0 to 200.0%
Oxygen partial pressure transmission: 0.0 to 150.0 kPa
EVT1 MV to EVT4 MV transmission: 0.0 to 100.0%(*) Available only when EVT3, EVT4 outputs (EVT3 option) are/is ordered.

88

Data

11.8 EVT1 Action Group
Character

Setting Item, Setting Range
Factory Default
EVT1 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Cleansing output: DO concentration input High/Low limits
independent action: Water temperature input High/Low limits
independent action: DO % saturation input High/Low limits
independent action: Oxygen partial pressure input High/Low limits
independent action
DO concentration input: 0.00 mg/L
EVT1 value
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT1 proportional DO concentration input: 0.00 mg/L
Water temperature input: 0.0
band
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.00 mg/L
EVT1 reset
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: -2.00 to 2.00 mg/L
Water temperature input: -5.0 to 5.0
DO % saturation input: -20.0 to 20.0%
Oxygen partial pressure input: -15.0 to 15.0 kPa
Reference Value
EVT1 hysteresis type
: Medium Value: Reference Value
89

Data

Character

Setting Item, Setting Range
Factory Default
EVT1 ON side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT1 OFF side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT1 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT1 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT1 proportional cycle
30 seconds
Setting range: 1 to 300 seconds
EVT1 output high limit
100%
Setting range: EVT1 output low limit to 100%
EVT1 output low limit
0%
Setting range: 0% to EVT1 output high limit
Output ON Time when EVT1
0 seconds
Output ON
Setting range: 0 to 10000 seconds
Output OFF Time when EVT1
0 seconds
Output ON
Setting range: 0 to 10000 seconds
DO concentration input: 0.00 mg/L
EVT1 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
lower side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa

90

Data

Character

Setting Item, Setting Range
Factory Default
DO
concentration
input:
0.00 mg/L
EVT1 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
upper side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT1 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa

91

Data

11.9 EVT2 Action Group
Character

Setting Item, Setting Range
Factory Default
EVT2 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Cleansing output: DO concentration input High/Low limits
independent action: Water temperature input High/Low limits
independent action: DO % saturation input High/Low limits
independent action: Oxygen partial pressure input High/Low limits
independent action
DO concentration input: 0.00 mg/L
EVT2 value
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT2 proportional DO concentration input: 0.00 mg/L
Water temperature input: 0.0
band
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.00 mg/L
EVT2 reset
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: -2.00 to 2.00 mg/L
Water temperature input: -5.0 to 5.0
DO % saturation input: -20.0 to 20.0%
Oxygen partial pressure input: -15.0 to 15.0 kPa
Reference Value
EVT2 hysteresis type
: Medium Value: Reference Value
92

Data

Character

Setting Item, Setting Range
Factory Default
EVT2 ON side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT2 OFF side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT2 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT2 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT2 proportional cycle
30 seconds
Setting range: 1 to 300 seconds
EVT2 output high limit
100%
Setting range: EVT2 output low limit to 100%
EVT2 output low limit
0%
Setting range: 0% to EVT2 output high limit
Output ON Time when EVT2
0 seconds
Output ON
Setting range: 0 to 10000 seconds
Output OFF Time when EVT2
0 seconds
Output ON
Setting range: 0 to 10000 seconds
DO concentration input: 0.00 mg/L
EVT2 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
lower side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa

93

Data

Character

Setting Item, Setting Range
Factory Default
DO
concentration
input:
0.00 mg/L
EVT2 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
upper side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT2 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa

94

Data

11.10 EVT3 Action Group
Character

Setting Item, Setting Range
Factory Default
EVT3 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Cleansing output: DO concentration input High/Low limits
independent action: Water temperature input High/Low limits
independent action: DO % saturation input High/Low limits
independent action: Oxygen partial pressure input High/Low limits
independent action
DO concentration input: 0.00 mg/L
EVT3 value
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT3 proportional DO concentration input: 0.00 mg/L
Water temperature input: 0.0
band
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.00 mg/L
EVT3 reset
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: -2.00 to 2.00 mg/L
Water temperature input: -5.0 to 5.0
DO % saturation input: -20.0 to 20.0%
Oxygen partial pressure input: -15.0 to 15.0 kPa
Reference Value
EVT3 hysteresis type
: Medium Value: Reference Value
95

Data

Character

Setting Item, Setting Range
Factory Default
EVT3 ON side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT3 OFF side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT3 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT3 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT3 proportional cycle
30 seconds
Setting range: 1 to 300 seconds
EVT3 output high limit
100%
Setting range: EVT3 output low limit to 100%
EVT3 output low limit
0%
Setting range: 0% to EVT3 output high limit
Output ON Time when EVT3
0 seconds
Output ON
Setting range: 0 to 10000 seconds
Output OFF Time when EVT3
0 seconds
Output ON
Setting range: 0 to 10000 seconds
DO concentration input: 0.00 mg/L
EVT3 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
lower side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa

96

Data

Character

Setting Item, Setting Range
Factory Default
DO
concentration
input:
0.00 mg/L
EVT3 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
upper side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT3 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa

97

Data

11.11 EVT4 Action Group
Character

Setting Item, Setting Range
Factory Default
EVT4 type
No action: No action: DO concentration input high limit action: DO concentration input low limit action: Water temperature input high limit action: Water temperature input low limit action: DO % saturation input high limit action: DO % saturation input low limit action: Oxygen partial pressure input high limit action: Oxygen partial pressure input low limit action: Sensor cap replacement timer: Cleansing output: DO concentration input High/Low limits
independent action: Water temperature input High/Low limits
independent action: DO % saturation input High/Low limits
independent action: Oxygen partial pressure input High/Low limits
independent action
DO concentration input: 0.00 mg/L
EVT4 value
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
EVT4 proportional DO concentration input: 0.00 mg/L
Water temperature input: 0.0
band
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.00 mg/L
EVT4 reset
Water temperature input: 0.0
DO % saturation input:
0.0%
Oxygen partial pressure input: 0.0 kPa
DO concentration input: -2.00 to 2.00 mg/L
Water temperature input: -5.0 to 5.0
DO % saturation input: -20.0 to 20.0%
Oxygen partial pressure input: -15.0 to 15.0 kPa
Reference Value
EVT4 hysteresis type
: Medium Value: Reference Value
98

Data

Character

Setting Item, Setting Range
Factory Default
EVT4 ON side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT4 OFF side
DO concentration input: 0.01 mg/L
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.00 to 4.00 mg/L
Water temperature input: 0.0 to 10.0
DO % saturation input: 0.0 to 40.0%
Oxygen partial pressure input: 0.0 to 30.0 kPa
EVT4 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT4 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT4 proportional cycle
30 seconds
Setting range: 1 to 300 seconds
EVT4 output high limit
100%
Setting range: EVT4 output low limit to 100%
EVT4 output low limit
0%
Setting range: 0% to EVT4 output high limit
Output ON Time when EVT4
0 seconds
Output ON
Setting range: 0 to 10000 seconds
Output OFF Time when EVT4
0 seconds
Output ON
Setting range: 0 to 10000 seconds
DO concentration input: 0.00 mg/L
EVT4 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
lower side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa

99

Data

Character

Setting Item, Setting Range
Factory Default
DO
concentration
input:
0.00 mg/L
EVT4 High/Low
limits independent Water temperature input: 0.0
DO % saturation input:
0.0%
upper side value
Oxygen partial pressure input: 0.0 kPa
Setting range:
DO concentration input: 0.00 to 20.00 mg/L
Water temperature input: 0.0 to 50.0
DO % saturation input: 0.0 to 200.0%
Oxygen partial pressure input: 0.0 to 150.0 kPa
DO concentration input: 0.01 mg/L
EVT4 hysteresis
Water temperature input: 1.0
DO % saturation input:
0.1%
Oxygen partial pressure input: 0.1 kPa
Setting range:
DO concentration input: 0.01 to 2.00 mg/L
Water temperature input: 1.0 to 5.0
DO % saturation input: 0.1 to 20.0%
Oxygen partial pressure input: 0.1 to 15.0 kPa

100

Data

11.12 Communication Group
Available when Serial communication (C5 option) is ordered.
Character
Setting Item, Setting Range
Factory Default
Shinko protocol
Communication protocol: Shinko protocol: MODBUS ASCII mode
: MODBUS RTU mode
Instrument number
0
Setting range: 0 to 95
Communication speed
9600 bps: 9600 bps: 19200 bps: 38400 bps
Data bit/Parity
7 bits/Even: 8 bits/No parity: 7 bits/No parity: 8 bits/Even: 7 bits/Even: 8 bits/Odd: 7 bits/Odd
Stop bit
1 bit: 1 bit: 2 bits

Data

11.13 Cleansing Group
Character

Setting Item, Setting Range
Factory Default
Cleansing time
30 seconds
Setting range: 10 to 120 seconds
Cleansing inactive interval
OFF (None)
Setting range:(None), 10 to 240 minutes
Standby after cleansing
0 seconds
Setting range: 0 to 60 seconds

101

Data

11.14 Basic Function Group
Character

Setting Item, Setting Range
Factory Default
Set value lock
Unlock: Unlock: Lock 1: Lock 2: Lock 3
Backlight selection
All are backlit.
: All are backlit.
: DO Display is backlit.
: Temperature Display is backlit.
: Action indicators are backlit.
: DO Display + Temperature Display are backlit.
: DO Display + Action indicators are backlit.
: Temperature Display + Action indicators arebacklit.
DO colorRed: Green: Red: Orange: DO color changes continuously.
DO color reference value
0.10 mg/L
Setting range: 0.00 to 20.00 mg/L
DO color range
0.01 mg/L
Setting range: 0.00 to 20.00 mg/L
Backlight time
0 minutes
Setting range: 0 to 99 minutes
Bar graph indication
No indication: No indication: Transmission output 1: Transmission output 2
EVT output when input errors
Disabled
occur: Enabled: Disabled
EVT1 value
365 days
Setting range: 0 to 1095 days
EVT1 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT1 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT2 value
365 days
Setting range: 0 to 1095 days
EVT2 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
102

Data

Character

Setting Item, Setting Range
Factory Default
EVT2 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT3 value
365 days
Setting range: 0 to 1095 days
EVT3 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT3 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT4 value
365 days
Setting range: 0 to 1095 days
EVT4 ON delay time
0 seconds
Setting range: 0 to 10000 seconds
EVT4 OFF delay time
0 seconds
Setting range: 0 to 10000 seconds
Sensor cap replacement timer
365 daysremainder
Setting range: 0 to 1095 days

11.15 Self-Check Group
Character
All litIndividually
lit

Mode
All lit mode
Individual lit mode
Key input mode
Temperature
Key Input
Display
When no key is pressed
When thekey is pressed.
When thekey is pressed.
When 2 or more keys are pressed simultaneously.
Output mode
Temperature
OutputDisplay
All EVT outputs, Self-check output: OFF
Transmission output 1 and 2: 4 mA DC
EVT1 output ON
EVT2 output ON
EVT3 output ON
EVT4 output ON
Self-check output ON
Transmission output 1: 20 mA DC
Transmission output 2: 20 mA DC

103

Data

Character
Measured
value

Mode
Input mode
DO Display

Temperature Display
DO concentration measured value
Water temperature measured value
DO % saturation measured value
Oxygen partial pressure measured value
Sensor cap serial number

11.16 Data Clear Group
Character

Setting Item, Setting Range
Data clear selection: Calibration value: Set value
Data clear Stop/Perform: Data clear Stop
: Data clear Perform

Factory Default
Calibration value

Data

Data clear Stop

11.17 Error Codes
For the following errors, the corresponding error code is indicated on the Temperature
Display.
Error CodeDescription
Occurrence
Non-volatile IC memory error
Constantly
DO Sensor communication errors have occurred, or When
DO Sensor is not connected.
measuring
After a command is sent to the DO Sensor, if there
and calibrating
is no response for 500 ms, the command will be sent
again.
If no response occurs 4 times consecutively, thiserror code will be displayed.
If communication status returns to normal, the unit
will return to normal status.
When this error code is indicated, the previous
measurement value is retained.
Sensor cap of the DO Sensor is not attached, or it isincorrectly attached.
When
Calibration error (when input errors have occurred,or when calibration cannot be performed 30 minutes calibrating
after starting calibration)
Normal measurement value cannot be obtained from When
the DO Sensor.
measuringand calibrating

104

105

12. Key Operation Flowchart
POWER ON

Abbreviations:
Meas.value: Measured value, DO: Dissolved oxygen,
Temp: Temperature, Calib: Calibration, Adjust: Adjustment,
C.desired value: Concentration desired value, Trans: Transmission

Display Mode or Cleansing Output Mode (*1)
Meas.value(*2) DO Concentration /Meas.value(*2) DO % Saturation /Meas.value(*3) Temp. Display Mode
Meas.value(*3) Temp. Display Mode+

(3 sec)Meas.value(*2)

Meas.value(*2)

DO Concentration
1-point Calib. Mode(P.55)DO Concentration
2-point Calib. Mode
(P.57)

Concentration Option
C.desired value Calibration Mode
(P.60)(3 sec)Meas.value(*2)
Meas.value(*3)

Forced Cleansing
Mode(P.73)

Meas.value(*2)
Meas.value(*3)

Oxygen Partial Pressure /Temp. Display Mode

Meas.value(*4)

1-point calibration(100% saturation calib.)

Meas.value(*4)

1st-point calibration (*5)(100% saturation calib.)

Meas.value(*4)

2nd-point calibration(0-point calibration)

Meas.value(*4)

Concentration Option
Auto Calibration

After cleansing, automatically proceeds.

+(3 sec)Transmission output
1 Zero adjustment(P.62)

Transmission output
1 Span adjustment(P.62)+(3 sec)Transmission output
2 Zero adjustment(P.63)

Transmission output
2 Span adjustment(P.64)DO Concentration
Input Group

Transmission
Output 1 Group

Transmission
Output 2 Group

Signal output
response time (P.27)

Transmission output
1 type(P.28)

Transmission output
2 type(P.30)

Salinity correction(P.27)

Transmission output
1 high limit(P.28)

Transmission output
2 high limit(P.30)

Altitude correction(P.27)

Transmission output
1 low limit(P.29)

Transmission output
2 low limit(P.31)

Trans. output 1 statuswhen calibrating (P.29)

Trans. output 2 statuswhen calibrating (P.31)

Trans. output 1 value
HOLD when calibrating(P.29)

Trans. output 1 value
HOLD when calibrating(P.31)

About Setting Item
Signal output
response time (P.27)
EVT3 Action
Group

1

2

• Upper left: DO Display: Indicates the setting item characters. • Lower left: Temperature Display:
Indicates the factory default. • Right side: Indicates the setting item and reference page.

Setting item in shaded section will be displayed only when the corresponding option is ordered.

About Key Operation•,,: Press the,orkey. The unit will proceed to the next setting item, illustrated by an arrow.
•+(3 sec): Press and hold theandkeys (in that order) together for 3 seconds. The unit will proceed to the next mode.
•(3 sec),(3 sec): Press and hold theor
key for 3 seconds. The unit will proceed to the next mode.
•+(3 sec): Press and hold theandkeys (in that order) together for 3 seconds. The unit will proceed to the next mode.
•+(3 sec): Press and hold theandkeys (in that order) together for 3 seconds. The unit will proceed to the next mode.
• To set each item, use theorkey, and register the set value with thekey.
• If thekey is pressed for 3 seconds at any setting item, the unit will revert to Display Mode or Cleansing Output Mode.

106Abbreviation:
H/L: High/Low limits

EVT1 ActionGroup

EVT2 ActionGroup

EVT1 type

EVT1 value

2

3

EVT3 type

EVT2 type(P.32)

1

EVT3 Action
Group(P.32)(P.32)
EVT3 value

EVT2 value(P.32)(P.32)(P.32)

EVT1 proportional
band(P.33)

EVT2 proportional
band(P.33)

EVT3 proportional
band(P.33)

EVT1 reset

EVT2 reset

EVT3 reset(P.33)(P.33)(P.33)

EVT1 hysteresis
type(P.33)

EVT2 hysteresis
type(P.33)

EVT3 hysteresis
type(P.33)

EVT1 ON side
(P.34)

EVT2 ON side

EVT3 ON side
(P.34)(P.34)

EVT1 OFF side
(P.34)

EVT2 OFF side
(P.34)

EVT3 OFF side
(P.34)

EVT1 ON delaytime(P.34)

EVT2 ON delaytime(P.34)

EVT3 ON delaytime(P.34)

EVT1 OFF delay
time(P.35)

EVT2 OFF delay
time(P.35)

EVT3 OFF delay
time(P.35)

EVT1 proportional
cycle(P.35)

EVT2 proportional
cycle(P.35)

EVT3 proportional
cycle(P.35)

EVT1 output highlimit
(P.35)

EVT2 output highlimit
(P.35)

EVT3 output highlimit
(P.35)

EVT1 output low
limit(P.35)

EVT2 output low
limit(P.35)

EVT3 output low
limit(P.35)

Output ON time when
EVT1 output ON(P.35)

Output ON time when
EVT2 output ON(P.35)

Output ON time when
EVT3 output ON(P.35)

Output OFF time when
EVT1 output ON(P.36)

Output OFF time when
EVT2 output ON(P.36)

Output OFF time when
EVT3 output ON(P.36)

EVT1 H/L independent
lower side value(P.36)

EVT2 H/L independent
lower side value(P.36)

EVT3 H/L independent
lower side value(P.36)

EVT1 H/L independent
upper side value(P.36)

EVT2 H/L independent
upper side value(P.36)

EVT3 H/L independent
upper side value(P.36)

EVT1 hysteresis(P.36)

EVT2 hysteresis(P.36)

EVT3 hysteresis(P.36)
4(*1) In Cleansing Output Mode, the measured value (DO concentration, DO % saturation, Oxygen partial pressure, temperature) is held during
cleansing action (using ‘Cleansing time’ and ‘Standby after cleansing’).

(*2) Indicates the measured value of DO concentration, DO % saturation or Oxygen partial pressure.
(*3) Indicates temperature measured value.
(*4) During calibration, DO concentration measured value flashes.
(*5) If errors occur during 1st-point calibration (100% saturation calibration) in 2-point Calibration Mode, the unit will revert to
Display Mode or Cleansing Output Mode by pressing the

or

key.

107

3

EVT4 Action
Group

Communication
Group

CleansingGroup(P.32)

Communication
protocol(P.41)

Cleansing time
(P.43)(P.32)

Instrument
number

(P.41)

Cleansing inactive
interval(P.43)

EVT4 proportional
band(P.33)

Communication
speed(P.41)

Standby after
cleansing(P.43)

EVT4 reset

Data bit / Parity(P.41)

EVT4 type

EVT4 value(P.33)
EVT4 hysteresis
type(P.33)

5

Stop bit(P.42)

EVT4 ON side
(P.34)
EVT4 OFF side
(P.34)
EVT4 ON delaytime(P.34)
EVT4 OFF delay
time(P.35)
EVT4 proportional
cycle(P.35)
EVT4 output highlimit
(P.35)
EVT4 output low
limit(P.35)
Output ON time when
EVT4 output ON(P.35)
Output OFF time when
EVT4 output ON(P.36)
EVT4 H/L independent
lower side value(P.36)
EVT4 H/L independent
upper side value(P.36)
EVT4 hysteresis(P.36)
6

4(*6) Indicates DO concentration measured value.
(*7) Depending on the selection in [Data clear Stop/Perform], the unit operates as follows.
If ‘Data clear Stop’ is selected, data will not be cleared. The unit will revert to the mode prior to ‘Data clear Stop’ (either Display Mode or
Cleansing Output Mode).
If ‘Data clear Perform’ is selected, data will be cleared. The unit will revert to the mode prior to ‘Data clear Perform’ (either Display Modeor Cleansing Output Mode). (While data is being cleared, all indications are momentarily unlit.)

108

5

Basic FunctionGroup

Self-Check Group

Data Clear GroupAll lit mode
(P.49)

Data clear selection(P.53)

Backlight selection(P.44)

Individual lit mode
(P.50)

Data clear Stop/Perform(*7)(P.53)

DO color

Key input mode
(P.51)

Set value lock(P.44)All litAll lit(P.45)
DO color reference
value(P.45)
DO color range(P.45)
Backlight time

Output mode
(P.51)
Input mode
(P.52)

Meas.value(*6)(3 sec)(P.45)Bar graph indication(P.46)
EVT3 value
EVT output when input
errors occur (P.46)(P.47)
EVT3 ON delay
time(P.47)

EVT1 value(P.46)
EVT1 ON delaytime(P.46)

EVT3 OFF delaytime(P.48)
EVT4 value

EVT1 OFF delay
time(P.47)(P.48)
EVT4 ON delaytime(P.48)

EVT2 value(P.47)
EVT2 ON delay
time(P.47)
EVT2 OFF delay
time(P.47)

EVT4 OFF delaytime(P.48)
Sensor cap replacement timer remainder(P.48)

6109

13 Maintenance13.1 Maintenance
Please perform the following maintenance procedure every month.
• Clean the measurement section with tap water.
• Check that the measurement section is not damaged or deteriorated.
• Check that DO Sensor cable is not damaged or deteriorated.
• Check that installation devices are not corroded.
13.2 Periodic Inspection
Please check the following items every 3 months.
• The DO Meter (AER-102-DO) is securely fixed in place.
• Check that the DO Meter (AER-102-DO) is not damaged.
• Check that screws in the terminal block are not rusty.
13.3 Replacement of Consumables (Maintenance Parts)
Purchase new sensor cap (DOS-CP), and replace one (1) year
after installation (Recommended).
13.4 Calibration
The DO Meter (AER-102-DO) is designed to be used for a long period of time,
however, calibrate it at least once a year to maintain measurement reliability.
See Section “7. Calibration” (p.54).
13.5 Long-Term Storage
When the DO Meter (AER-102-DO) and DO Sensor are not used for a long
period of time, store them as follows.
• Disconnect the power from the mains electricity.
• Pull the DO Sensor out of the water, and clean it.
• Store the DO Meter (AER-102-DO) and DO Sensor away from direct sunlight.

11014. Reference Chart
Amount of saturated DO in water at each temperature(1 atmospheric pressure, Salinity concentration 0 PSU)
Amount ofAmount of
TemperTemperTempersaturated
saturated
ature
ature
ature
DO
DO
( )
( )
( )
(mg/L)(mg/L)
1
2
3
4
5
6
7
8
9
10

14.22
13.83
13.46
13.11
12.77
12.45
12.14
11.84
11.56
11.29

11
12
13
14
15
16
17
18
19
20

11.03
10.78
10.54
10.31
10.08
9.87
9.67
9.47
9.28
9.09

21
22
23
24
25
26
27
28
29
30

Amount of
Tempersaturated
ature
DO
( )
(mg/L)

8.92
8.74
8.58
8.42
8.26
8.11
7.97
7.83
7.69
7.56

31
32
33
34
35
36
37
38
39
40

Amount ofsaturated
DO(mg/L)

7.43
7.31
7.18
7.07
6.95
6.84
6.73
6.62
6.52
6.41

JIS K 0102-2016111

*****

Inquiries*****

For any inquiries about this unit, please contact our agency or thevendor where you purchased the unit after checking the following.
[Example]• Model--------------------------- AER-102-DO• Serial number----------------- No. 194F05000

In addition to the above, please let us know the details of themalfunction, or discrepancy, and the operating conditions.

SHINKO TECHNOS CO., LTD.
OVERSEAS DIVISION
Head Office: 2-5-1, Senbahigashi, Minoo, Osaka, 562-0035, Japan[URL]
https://shinko-technos.co.jp/e/Tel: +81-72-727-6100[E-mail]overseas@shinko-technos.co.jp
Fax: +81-72-727-7006

No.AER11DOE3

2022.02