Manual No.3001E R3Model DGO-201
Oxygen Analyzer Receiver
Instruction Manual!

Please read this manual carefully before using
this product.

Energy Support Corporation

1. Precautions for Safe Use
For safety purposes, the equipment is provided with warning labels and caution messages are specified in the
instructional manual as described below. Please fully understand the meanings of the messages to ensure safeuse.

1-1 Caution message!

85 to 132 VAC is applied to the power terminal block.
To avoid electrical shock when checking the wiring, turn off the external
power supply.

1-2 Warning message

!

!

!

CAUTION* Be sure to turn the external power supply off when working.

WARNING* Touching power supply terminal block, switches and other electric devices
may result in electric shock.

ELECTRIC
SHOCK Be sure to turn the power off when inspecting, handling with wet hands
will cause danger.

 The meaning of the signal words are described below.
WARNING Indicates a potentially hazardous situation which may result in death or serious injury if it fails
to be avoided.
CAUTION Indicates a potentially hazardous situation which may result in moderate or minor injury if it
fails to be avoided.
These signal words are also used for unsafe actions.

-1-2. General
2-1 Introduction
This instruction manual describes the methods for installation, operation, and inspection of the model
DGO-201 receiver for zirconia O2 (oxygen) analyzers. Please read this manual carefully before use to fully
understand it.
Other models whose specifications are different from those of your equipment are also described in thismanual.
Therefore, it should be noted that some of the information contained in this manual is not related to yourequipment.
For detailed information on your zirconia O2 analyzer, please refer to its instruction manual.

2-2 Product warranty(1) Warranty period:

As described in the completion document.
If no completion document is available, the warranty period shall be 1 year after
delivery.

(2) Conditions:

If this product fails or malfunctions due to a design, manufacturing or material
defect in the product that we are responsible for even though it has been usedcorrectly used during this warranty period after delivery followed by correct
storage and installation until commissioning, we will replace or repair the productfree of charge.
[1] This assumes that the product is installed and used exactly as described in thespecification and instruction manual.
[2] The analyzer must be regularly calibrated and its consumable parts (transmitter,etc.) must be replaced at regular intervals.
[3] The operating status of the analyzer shall be checked and maintained as
required.
Note: The consumable parts and other similar parts are not covered by the warranty.

(3) Warranty coverage: Only the product that we delivered to you is covered by the warranty.
We do not assume responsibility for any incidental damage (i.e., any loss/lost profit,
etc. resulting from control by use of our product or from recorded results or any
loss/lost profit, etc. from equipment used with our product).

-2-

2-3 Contents
1.

Precautions for Safe Use ·····················································································1
1-1 Caution message ·····························································································1
1-2 Warning label ································································································22.

General··········································································································22-1 Introduction ··································································································22-2 Product warranty ····························································································2
2-3 Contents ······································································································3
2-4 Precautions for use ··························································································4
2-5 Product outline ·······························································································4
2-6 Operating principle of zirconia oxygen analyzer ·······················································5
2-7 Names of parts and their functions········································································6
2-8 Temporary storage of product ·············································································123.

Installation ·····································································································13
3-1 Installation conditions ······················································································13
3-2 Installation method ··························································································13
3-3 Wiring method ·······························································································134.

Receiver Function List ·······················································································165.

Operation ·······································································································17
5-1 Starting the receiver ·························································································17
5-2 Stopping the receiver ·······················································································17
5-3 Key operation ································································································18(1) Method for operation each key (TEMP key/O2 key/EMF key/CAL key/RANGE key/
P key/CH, DATA key) ················································································18(2) Range switching method ·············································································26(3) Oxygen (O2) concentration indication, sensor electromotive force (EMF) indication ······26(4) Gas calibration method ···············································································27(5) Purge method ··························································································31
5-4 Key operation and information displayed in PRG mode ··············································33
5-5 System data setting error ···················································································41
5-6 Alarm display and operation ···············································································426.

Troubleshooting ·······························································································447.

Channel Data List ·····························································································63

References:
Model DGO201 O2 Analyzer Receiver (Drawing)
Model DGO201 O2 Analyzer Receiver (DGO-III replacement compatible product drawing)
Model DGO201 O2 Analyzer Receiver Main Parts List
Measuring System Product Repair Request Form-3-

2-4 Precautions for use!

The model DGO-201 receiver for zirconia O2 analyzers must be used under the following
environmental conditions: Place away from direct sunlight Place at ambient temperatures ranging from -10 to +50ºC with little change in temperature (±10ºC/day) Place with little moisture/dust
 Place with little mechanical vibration
 Place with little electromagnetic field effect Corrosive gas free place

2-5 Product outline
The model DGO-201 receiver for zirconia O2 analyzers is designed for monitoring/controlling theatmosphere in a heating furnace by measuring the concentration of oxygen in the exhaust gas fromthe boiler/furnace.
It has the following excellent functions and features: O2 measurements can be taken at up to 4 points.
 Automatic calibration and automatic purge function settings are available.
 Functions and errors are indicated by LEDs.
 Average value calculation and exclusion function are provided.
 Output signal first-order lag and hold functions are provided.
 Wet/Dry calculation function is provided.
 Each sensor signal value can be displayed.
 Small, lightweight, and easy to maintain.

-4-

Electrode2-6 Operating principle of zirconia oxygen analyzer

Zirconia

Electrode

Assuming PO2 (A) > PO2 (S)Positive electrode: O2+4e-O2Negative electrode: 2O-O2+4e

A cubic solid solution consisting of zirconia (ZrO2) combined with additives such as calcia (CaO), yttria(Y2O3), etc. becomes a solid electrolyte, which conducts oxygen ions (O-) at high temperature. The
electromotive force calculated from the formula described below is generated due to oxygen ion conduction
by providing a pair of electrodes (porous material) opposed to this solid electrolyte and applying a gas witha different oxygen partial pressure to each of the electrode.
Ｅ＝－

ＰＯ２
（Ｓ）
ＲＴ

ｌｎ 
４Ｆ
２
ＰＯ（Ａ）
Where E: Electromotive force generated between electrodes (mV)
R: Gas constant (8.314·J/mol-1·K-1)
T: Absolute temperature of solid electrolyte (normally 923K) ≒ Detection unit heater control
temperature
F: Faraday constant (9.649 x 104 C·mol-1)
PO2(A): O2 partial pressure in reference air (concentration 21.0vol%)PO2(S): O2 partial pressure in sample gas (indicated concentration vol%)Assign each constant to the formula above to obtain the following equation:Ｅ
ＰＯ（Ｓ）＝２１．０・
Antiｌｏｇ（１０） −
２
 ０．０４９６･Ｔ
Using this equation, find PO2 in the sample by measuring the electromotive force E.
This electromotive force E is calculated by the open logarithm transformation circuit in the receiver and theresult is displayed/output as O2 partial pressure (vol%) that can be directly read.

-5-

2-7 Names of parts and their functions(1) External view

DATA display

Data content indicator

Data state indicator

CH (channel) display

MODE display

CPU error
indicator

Temperature data
display selection key

Receiver/sensor error
indicator

O2 concentration data
display selection key

Sensors Nos.1 to 4
in-use indicators

Sensor electromotive force
data display selection key

Sensors Nos.1 to 4
error indicators
Range state indicator

Calibration start key
Functional only while inmaintenance mode
Range selection key
Functional only when there is
no remote command
Purge start key
Functional only while inmaintenance mode
Channel display key

Data display key

Clear key

Entry keyNames of parts andtheir functions

CH, DATA setting change
key

-6-

Panel cut dimensions

(2) Arrangement of terminal blocks on rear panel of measuring instrument

RS485 interface
CN2

CN3

RS485
CN5

RS485

FC
CJ±
CELL1±K1±
CELL2±
K2±
CELL3±K3±
CELL4±
K4±
No.102 output OUT1±
No.202 output OUT2±
No.302 output OU3±
No.402 output OUT4±
Average value output
OUT5±

RS485 bus termination resistor
ON/OFF switch

S1

SSR drive output
SSR
CH1
CH2
CH3
CH4
CH5

FC

CN6

CN7

FC

Contact output

FC

Contact input

FC
FC

OUTPUTINPUT

ANALOG FUSE3A

AC100

F

Power terminal
Power fuse
JIS-MS-51NR3A-7-

External view of DGO-III replacement compatible product(3)

DATA display

Data content indicator

CH (channel) display

Data state indicator

MODE display

CPU error
indicator

Temperature data
display selection key

Receiver/sensor error
indicator
Panel cut dimensions

O2 concentration data
display selection key

Sensors Nos.1 to 4
in-use indicators

Sensor electromotive force
data display selection key

Sensors Nos.1 to 4
error indicators

Calibration start key

Range state indicator

Functional only while inmaintenance mode
Range selection key

Data display key

Functional only when there is
no remote command

Purge start key
Functional only while inmaintenance mode
Channel display key

Entry key

Clear keyNames of parts andtheir functions

CH, DATA setting change key-8-Arrangement of terminal blocks on rear panel of DGO-III replacement compatible product
T 1
C.J.

CELL1
K1
CELL2
K2
CELL3
K3
CELL4
K4
FG

FG

+
+
+
+
+
+
+
+
+
-

2
4
6
8
10
12
14
16
18
20

I1
I1
(No.1
O2O2output)
(No.1
出力)

+
-

I2
I2
(No.2
(No.2O2O2output)
出力)

+
-

I3
I3
(No.3
(No.3O2O2output)
出力)

+
-

I4
I4
(No.4
(No.4O2O2output)
出力)

+
-

I5
I5
(平均O2O2output)
出力)(Average

+
-

22
24
26
28
30
32
34

T 2
1

36

3

38

5

40

7

42

9

44

11

46

13

48

15

50

17

52

19

54

21

56

23

58

25

60

27

62

29

64

31

66

33

68

35

70

37

T 3
71

CAL GND(COM)

73

39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69

TRG(REM CAL) IN
TRG(CAL END) OUT

75

FG

77

FG
POWER DOWN
CPU FAILRANGE HRANGE L
MAINTE.
ANN 1
ANN 2
ANN 3
ANN 4
CAL AIRCAL SPANCAL ZERO
CAL 1
CAL 2
CAL 3
CAL 4
SSR 1
SSR 2
SSR 3
SSR 4
COM
FG
FG
FG
FG
FG
FG

79
81
83
85
FG
FG

72

RANGE H(REM.)

74

RANGE L(REM.)

76

MAINTE.(REM.)

78

PRG

80
82
84
86
FG

U
V

POWER

FUSE 3AＦ
JIS-MS-51NR3A-9-(REM.)

Average exclusion
平均除外№1
No. 1
Average exclusion
平均除外№2
No. 2
平均除外№3
Average exclusion
No. 3
平均除外№4
Average exclusion
No. 4

(4) Functional description of each part

Name

Function

DATA display

Displays O2 concentration at each measurement point, average O2
concentration, setting data in PRG mode, etc.

MODE display

Shows information on DATA display and error (See page 11 for details)

CH (channel) display

Displays the sensor number corresponding to the O2 concentration shown on thedisplay and the channel number of the system data when in PRG mode.
(See page 11 for details)

Average value calculation
LED

The sensor number included in the average value calculation is illuminated.

CPU failure

LED

Comes on if a CPU functional error occurs.

ANN

LED

Comes on if an error occurs in sensors Nos. 1 to 4 or receiver.

MEAS.

LED

Indicates measurement in progress.

MAINTE.

LED

Lit during temperature rising and calibration or with MAINTE. mode selected.

PRG.

LED

Comes on when PRG mode is selected.

RANGE L

LED

Comes on when Low range is selected.

RANGE H

LED

Comes on when High range is selected.

RANGE RLED

Lit while external range switching input is in use.

CAL.

Key

Used to perform one-push calibration. (See page 27 for details)

P

Key

Used to perform one-push purge.. (See page 30 for details)

O2

Key

Used to display individual or average O2 concentration.

EMF

Key

Used to display electromotive force (EMF) of sensors Nos. 1 to 4.

TEMP

Key

Used to display temperature (TEMP) of sensors Nos. 1 to 4.

CH

Key

Used to input a channel number. (See page 32 for details)

RANGE

Key

Used to switch the range. (External range is given priority.)

DATA

Key

Used to change data.

ENT

Key

Used to enter data.

CLR

Key

Used to release error display or clear displayed data.

Key

Used to increase/decrease a setting value.

Key

Used to change the digit position of the setting value to be changed.

-10-(5) Display indication code[1] MODE display
It consists of a 2-digit 7-segment LED display and indicates the content of the data shown on the
DATA display using a code
[2] Channel (CH) display
It consists of a 2-digit 7-segment LED display and indicates the corresponding sensor number andaverage O2 concentration using a code.
[3] DATA display
It consists of a 4-digit 7-segment LED display and displays average, specific O2 concentration,
error code, etc.
The codes that may be shown on the MODE display and CH display and their meanings are described
below.
Normally, the following two codes are used for indication of operating status.
MODE display

Meaning of code

CH indicator

Meaning of code

HU

During heat rising

01

Corresponds to sensor No. 1.

01

O2 concentration indication

02

Corresponds to sensor No. 2.

03

Corresponds to sensor No. 3.

04

Corresponds to sensor No. 4.

02
03

Sensor electromotive force(EMF) indication
Sensor temperature (TEMP)
indication

07

Range switching indication

0A

10

Manual calibration indication

00

C1

Air calibration in progress

1 to 56

C2
C3
C0

Zero gas calibration inprogress
Span gas calibration inprogress
Calibration recovery inprogress

P1

Purge in progress

P2

Purge not in service

P0

Purge recovery in progress

E1 to E9
E-

Corresponds to average O2/n sensor.
(n corresponds to the sensor used withthe receiver.)Corresponds to average O2/all sensors.
* (Only master machine can beselected.)
Channel number in PRG mode

* If two or more receivers are connected, the averageamong all sensors is available from the receiver set
as master machine.
Master machine: CH No. 94 = 1
Other receivers: CH No. 94 = 2 to 9
00 indication: CH No. 96 = 1: Average in machine
itself= 2: Average among all
connected sensors= 3: Average of averages
in connected
machines
Note: DGO-III replacement compatible product has
only an average function for the machine itself.
The compatible replacement is not equippedwith purge output.

Error occurring
See page 41.

-11-

2-8 Temporary storage of product!

Observe the following precautions when temporarily storing the product: It is desirable to store the product protected with foamed styrol.
 Store it in a place away from direct sunlight.
 Store it in a place at ambient temperatures ranging from -10 to +50ºC with little change intemperature.
 Store it in a place with little moisture/dust.
 Store it in a place protected from rainwater, etc.
 Store it in a place with little mechanical vibration.
 Store it in a place with no corrosive/hazardous gas.

-12-

3. Installation
3-1 Installation conditions!

The analyzer is a precision machine. To ensure correct use of this machine, observe the following
precautions when determining the most appropriate installation place: Place with little vibration. (0.1G or less) Corrosive gases (SO2, H2S, etc.)
 Place away from high radiant heat.
 Place with little electromagnetic field effect.
 Place with little moisture/dust.
 Place with little voltage variation.
 Place with little power frequency variation.
 Place at ambient temperatures ranging from -10 to +50ºC (away from direct sunlight).

3-2 Installation method!

Precautions for installation[1] This analyzer is a precision machine. When installing it, handle it carefully to avoid excessive
impact loads.
[2] Since it is fragile, do NOT bring it into contact with other parts when installing it.

3-3 Wiring method
Perform wiring using the terminal block connectors.
Please take necessary dust/drip-proof measures during installation work.
Perform detailed wiring in accordance with the circuit diagram attached to the delivery drawing.

-13-

-14-

1
2
3
4




13
14
15
16




21
22



30
31


33
34

T1

E
Average value output
4-20mADC*1 or *2

Individual +output 4 −Individual +output 1 −

K4 −

+

CELL4 −++
CELL1 −
+
K1 −

F

CN6

CN5

CN2

Master machine







POWER

1
2
3
4




13
14
15
16




21
22



30
31


33
34

T1

F

CN6

CN5

CN2
1
2
3
4




13
14
15
16




21
22



30
31


33
34

T1

E
Average value output
4-20mADC*2

Individual +output 4 −
POWER

25P
Contact input

Individual +output 1 −25PContact input

+
K4 −

+
CELL4 −15P
SSR output

OFF
*3

+
K1 −

9P
RS485 CELL1 +−Power supply
100VAC

U
V

CN7

CN3

F

CN6

CN5

CN2

Slave machine

1
2
3
4




13
14
15
16




21
22



30
31


33
34

T1

F

CN6

CN5

CN2

Slave machine

E
Average value output
4-20mADC*2

Individual +output 4 −
POWER

25P
Contact input

Individual +output 1 −

+
K4 −

+
CELL4 −+K1 −+CELL1 −

25P
Contact output

15P
SSR output

OFF
*3

9P
RS485

Power supply
100VAC

U
V

CN7

CN3

1. Average value output (master machine)
CH96 setting 1: Average value output in effective system for machine itself
CH96 setting 2: Average value output in effective system for all connected machines
CH96 setting 3: Average value output of averages in each connected machine
2. Average value output in effective system for machine itself
3. RS485 bus termination resistor switch
4. RS485 bus termination resistor switch, only last termination “ON”

E
Average value output
4-20mADC*2

Individual +output 4 −25PContact output

Individual +output 1 −

+
K4 −

+
CELL4 −+
CELL1 −+K1 −25PContact output

15P
SSR output

OFF
*3

9P
RS485

Power supply
100VAC

U
V

CN7

CN3

Slave machine

U
V

POWER

25P
Contact
input

25P
Contact
output15P
SSR output

ON
*4

9P
RS48
5

Power supply
AC100V

CN7

CN3

Example of wiring (see the circuit diagram attached to the delivery drawing for details)

layout of connectors (see the circuit diagram attached to the delivery drawing for
details)
Receiver
+
−
+
K1
−

CELL1

+
−
+
K4
−

CELL4

See page 7 forterminal blockarrangement.

Individual +output 1 −Individual +output 4 −

T1
1
2
3
4




13
14
15
16




21
22



30
31


33
34

CN2

CN3

9P
RS485

OFF
*3

CN5

15P
SSR output

CN6

CN7

25P
Contact
output25PContact
input
POWER

U
V

F

E
Average value output
DC4-20mA

CN515P
SSR output
1
2
3
4
5
6
7
8

Power supply
AC100V

CN6
25P
Contact output

CN7
25P
Contact output
1

4

CAL1
CAL2
CAL3
CAL4

5

CAL-ZERO

5

6

CAL-SPAN
CAL-AIR
ANN1
ANN2
ANN3

6

SSR1
SSR2
SSR3
SSR4
COM

1

COM
COM
COM

2
3

7
8

9

9

10

10

11

11

12

12

13

13

14

14

15

15
16
17
18
19
20
21
22

ANN4
MAINTERANGE-L
RENGE-H
CAL-END

3
4

10
11

GE

8
9

12
13
14
15
16

PURGE1PURGE219

PURGE3
PURGE4

21

17
18

20

22
23

24

24

COM
COM

-15-

Exclusion 1
Exclusion 2
Exclusion 3
Exclusion 4
PRG
MAINTERANGE-L
RANGE-H
REM-CAL
REM-PUR

7

POWER-DO
WN
CPU-FAIL

23

25

2

25

COM
COM

4. Receiver Function List

Item

Average value calculation
function

Average value exclusion
function
Automatic calibration
function
Automatic purge function
First-order lag calculation
function

Output hold function

WET/DRY
Calculation function
Self-diagnosis function

Description
Calculates each average O2 concentration and continuously displays/outputs
calculation results.
(Only the master machine can display/output total average calculation results
when 2 to 9 receivers are connected.)
Master machine: CH No. 94 = 1
Other receivers: CH No. 95 = 2 to 9
Display output function: CH No. 96 = 1 Average in machine itself (same asother receivers)
CH No. 96 = 2 Average among all connected
sensors
CH No. 96 = 3 Average of averages in connected
machines
Note: DGO-III replacement compatible product has only an average function
for the machine itself.
If an error occurs on a channel, the channel will be automatically excluded
from average calculation during calibration or with the external exclusion
input on.
The maximum and minimum values of measurements can also be excluded
from average value calculation.
Automatically opens/closes the solenoid valve at preset intervals and performs
air, zero, (span gas) calibration.
Automatically opens/closes the solenoid valve and performs purge.
Note: DGO-III replacement compatible product is not equipped with a purge
output port.
Can perform first-order lag calculation from 0 to 99 seconds through a datasetting.
1. When hold 1 is selected;
If an error occurs on a channel, its output will be held at preset value 1.
During calibration on a channel, its output will be held at preset value 2.
2. When hold 2 is selected;
If an error occurs on a channel, its output will be held at preset 1. Duringcalibration on a channel, its output is held at the O2 value obtained justbefore the start of calibration.
3. When hold OFF is selected;
If an error occurs on a channel, its output will be held at the O2 value
obtained just before the detection. During calibration on a channel, it
outputs the O2 value corresponding to the calibration gas.
Calculates, displays, and outputs the DRY O2 value corrected for the watercontent in the exhaust gas, if DRY calculation is on.
Automatically detects failure locations by self-diagnosis and outputs error
indication and alarm contacts.

-16-

5. Operation
5-1 Starting the receiver
The basic procedure for starting the receiver is described below.

Starting thissystem[1] Power on
When the external power switch is turned on, the receiver starts
counting down for warmup with “HU” shown on its MODE
display; it can take measurements when the detector heater setting
temperature is reached.

Turn on the
power.
MODE
display

HU(during warmup)

DATA
display

Temperature indication(during warmup)

O2 concentration
indication(start measurement)

Check data for each channel (pages 33 to 40)
Note: Normally, data appropriate for the specifications was set prior to
shipment from the manufacturer.
If there is a change in calibration gas concentration, it is necessary
to change the settings.

5-2 Stopping the receiver

Stopping thissystemTurn off thepower.

!

When turning off the power to the receiver and heater, make surethat the sensor in the transmitter is in the air atmosphere. If not,the sensor may degrade.

Set the receiver’s power switch and the heater’s power switch to OFF.

!

When inspecting the terminals of the analyzer and receiver or
performing maintenance such as removal of wiring, be sure to set
the external power (main power supply) switch to OFF
beforehand.

-17-5-3 Key operation(1) How to operate each key:[1] TEMP key(MEAS and MAINTE mode)
Normaldisplay
Disabled whenin PRG mode
TEMP“03” shown on MODE display“01” shown on CH display
Cell temperature for CH No. 1 shown on DATA display

CH display+1

CH display
-1

ENT

O2
EMF
CAL

Display the cell temperature of a channel selected fortemperature indication on the DATA display.
(The value shown on the CH display can only be changed within
the range of 01 to 04.)
Press the ENT key to return to normal display.

Displays the initialstate of each key
operation

RANGE
P(PURGE)CH
CLR* If a particular channel is not selected for system data CH No. 27, “_ _ _ _ _” will appear on the DATA
display.

-18-

[2] O2 key(MEAS and MAINTE mode)
Normaldisplay
Disabled whenin PRG mode“01” shown on MODE display *Normal display maintained
O2“0A” shown on CH display
Average O2 value shown on DATA display

CH display+1

CH display
-1

ENT

EMF
TEMP

Display the O2 value of a channel selected for O2 indication on
the DATA display.
(The value shown on the CH display can only be changed within
the range of 01 to 04, 0A, and 00.)
00: Can be set only for the master machine.
Press the ENT key to return to normal display.

CAL

Displays the initialstate of each key
operation

RANGE
P(PURGE)CH
CLR* If a particular channel is not selected for system data CH No. 27, or if any faulty channels are externally
excluded, “_ _ _ _ _” will appear on the DATA display.
If a faulty channel is selected while in O2 display mode, an error number will be shown on the
DATA display as illustrated in the table below.
Table 1: Faulty channel(s) shown on DATA display
Memory 1 error
E-10 displayed for all channels
Memory 2 error
E-13 displayed for all channels
Thermocouple error
E1 displayed only for faulty channel(s)Heat rise error
E2 displayed only for faulty channel(s)Sensor temperature low error
E3 displayed only for faulty channel(s)Sensor temperature high error
E4 displayed only for faulty channel(s)Sensor error
E5 displayed only for faulty channel(s)Early sensor detection error
EA displayed only for faulty channel(s)Air calibration error
E6 displayed only for faulty channel(s)Zero and span calibration error E7 displayed only for faulty channel(s)Purge error
E8 displayed only for faulty channel(s)Thermistor error
E9 displayed for all channels
Power turned off: Display off, CPU error: ?? (unforeseeable)
See page 42 for error descriptions and error numbers.

-19-[3] EMF key(MEAS and MAINTE mode)

Normaldisplay
Disabled whenin PRG mode“02” shown on MODE display

EMF“01” shown on CH display
EMF value for CH No. 1 on DATA display

CH display+1

CH display
-1

ENT

O2
TEMP
CAL

Display the EMF value of a channel selected for EMF indicationon the DATA display.
(The value shown on the CH display can only be changed within
the range of 01 to 04.)
Press the ENT key to return to normal display.

Displays the initialstate of each key
operation

RANGE
P(PURGE)CH
CLR* If a particular channel is not selected for system data CH No. 27, “_ _ _ _ _” will appear on the DATA
display.

-20-

[4] CAL key(MAINTE mode)
Normaldisplay

While not in MAINT mode, or during calibration, purge, temperaturerise with MFT and EEROM (MFT-SW) is on (manufacturer key
CH103 needs to be input in advance)“10” shown on MODE display
CAL“01” shown on CH display
Average O2 value shown on DATA display



ENT


O2

CH display+1

EMF

CH display
-1

TEMP
RANGE

Displays theinitial state ofeach key
operation

P(PURGE)

ENT

CH
CLR

“C1 → C2 → C3 → C0” shown on MODE display
Channel during calibration shown on CH display
O2 value of channel during calibration shown on DATA display
Calibration channel selection(The value shown on the CH display can only be changed within the range of 01 to 04 and 0A. If you set
0A, all channels will be selected.)
The state of calibration “C1 → C2 → C3 → C0” is shown on the MODE display.
＊ A channel not selected for CH No. 27 or a faulty channel (described in [2] table 1), channel cannot be
selected.
＊ The information shown on the display during calibration is the same as that shown during automatic
calibration.

-21-

[5] RANGE key(MAINTE mode)
Normaldisplay

Not while in MAINTE mode, or during calibration/purge/remote range input“07” shown on MODE display
RANGE

Current range (H or L) shown on CH display
Average O2 value shown on DATA display



O2



EMF
TEMP
CAL
CH display
H/L toggle

CH display
H/L toggle

P(PURGE)
CH
CLR

ENT
Set to the range shown on the CH display[6] CAL key (MEAS and MAINTE mode)(fault release for E1 to E9 and E-(n), calibration, purge cancelation)

Normaldisplay“Err” shown on CH display
CLR“CLEAr” shown on DATA display

Fault release, calibration cancelation, purge cancelation
ENT

-22-

Displays theinitial state ofeach key
operation

[7] P (purge) key(MAINTE mode)
Normaldisplay
Not while in MAINTE mode, or during calibration or purging

No information shown on MODE displayP“01” shown on CH display
Average O2 value shown on DATA display



ENT


O2

CH display+1

EMF

CH display
-1

TEMP
CAL

Displays theinitial state ofeach key
operation

RANGE

ENT

CH
CLR

“P1 → P2 → P0” shown on MODE display
Channel during purge shown on CH display
Average O2 value shown on DATA display
Purge channel selection(The value shown on the CH display can only be changed within the range of 01 to 04 and 0A. If you set
0A, all channels will be selected.)
The state of purge “P1 → P2 → P0” is shown on the MODE display.
＊ A channel not selected for CH No. 27 cannot be selected.
＊ The information shown on the display during purge is the same as that shown during automatic purge.
＊ DGO-III replacement compatible product is not equipped with a purge output port: this function cannot be
used.

-23-

[8] CH, DATA key(MAINTE mode)
Normaldisplay
Returned byreleasing
MAINTE contact
input

If there is no MAINTE contact input, any CH key operation is not valid.

CH
If there is any MAINTE contact input, the receiver will enter
the edit channel selection mode.

CH increase/decrease

CH digit position change“PG” shown on MODE display
Previously selected CH No. shown on CH display



Lowest order is blinking







Current CH value shown on DATA display
It can be set within therange of 0 to 99

Uneditable CH
selected (Note 1)

Selected CH digit
position is blinking

Data editing canceled

DATA

CH

Note 1: CH cannot be edited
CH11 and subsequent channels cannot be edited

Edit CH determined

DATA increase/decrease

DATA digit position change“PG” shown on MODE display
Edit CH shown on CH display
Edited CH data value shown on DATA display(High order is blinking at initial stage)

Data determined









Selected DATA digit position is blinking

Edit CH data set to low end value in

ENT

CLR

initial data

CH

Cancel DATA edit and return to edit CH selection mode

＊ When in MAINTE mode, the O2, EMF, TEMP, CAL, RANGE, P (purge) keys can be used; it is possible toswitch to another mode in any of the situations described above. When in edit channel selection mode, use
the ENT key to return to normal display.

-24-

[9] CH, DATA key(PRG mode)
Normaldisplay
Returned byreleasing PRG
contact input

If there is no PRG contact input, any CH key operation is not validCH
If there is any PRG contact input, the receiver will enter the edit
channel selection mode

CH increase/decrease“PG” shown on MODE display
Previously selected CH No. shown on CH display



Lowest order is blinking
Current CH value shown on DATA display
Uneditable CH
selected (Note1)

CH digit position changeIt can be set within the range of 0 to
99
0 to 299 when unusable[MAKER_KEY] = 2831



Selected CH digit position isblinking

Data editing canceled

DATA

CH

Note 1: CH cannot be edited
It is impossible to edit within the ranges of CH61 to

Edit CH determined

CH72 and CH81 to CH92

DATA increase/decrease

DATA digit position change“PG” shown on MODE display
Edit CH shown on CH display
Edited CH data value shown on DATA display

(High order is blinking at initial stage)

Data determined

Selected DATA digit position is blinking

Edit CH data set to low end value

ENT

CLR

in initial data

Cancel DATA edit and return to edit CH selection mode

＊ Any key operation other than those above is invalid while in PRG mode.

-25-



CH

(2) Range switching method
Follow the procedure below to switch the range using the keys.
You can switch the range with this method only while in MAINTE mode.
If an external range is used, this operation cannot be performed.
Item

Key
operation
procedure

Range switched from
H to L
Range switched fromL to HDISPLAY
MODE

CH

RANGE


07

H
L

O2 indication


ENT

07

L
H

O2 indication

Remarks

DATA

Note: This operation canbe performed only while
in MAINTE mode.
LED indication changes:
H→L→H
Only external switching
can be performed while
LED R is lit.

(3) O2 concentration indication, sensor electromotive force (EMF) indication
Sensor temperature (TEMP) indication, etc. switching method[1] O2 concentration indication switching ······················ Switch the individual and average O2
concentration indications for sensors Nos.
1 to 4.
[2] Sensor electromotive force (EMF) indication switching · Display electromotive force (EMF) of
sensors Nos. 1 to 4.
[3] Sensor temperature (TEMP) indication switching ········ Display temperatures of sensors Nos. 1 to
4.
Item
1. Individual O2
concentration indication
switching
Example: Switching fromaverage O2 concentration
indication to O2
concentration indication foreach sensor
2. Average O2 concentration
indication switching
Example: Switching fromsensor 2 O2 concentration
indication to average O2
concentration indication
3. Sensor electromotive
force indication switching

4. Sensor temperature
indication switchingKey
operation
procedure

O2



O2



EMF


TEMP



DISPLAY
Remarks

MODE

CH

DATA

01

0A
01
02
03
04

Average value O2 indication
CH1 O2 indication
CH2 O2 indication
CH3 O2 indication
CH4 O2 indication

01

02
03
04
0A
(00)

CH2 O2 indication
CH3 O2 indication
CH4 O2 indication
Average value O2 indication(total average value)

02

01
02
03
04

CH1 EMF indication
CH2 EMF indication
CH3 EMF indication
CH4 EMF indication

Same as above

03

01
02
03
04

CH1 temperature indication
CH2 temperature indication
CH3 temperature indication
CH4 temperature indication

Same as above-26-

It can be performed while in
MEAS/MAINTE mode.
However, it can be performed
only while in MAINTE mode
if heat rising, calibration, error
is occurring.

Same as above

00: Master machine only

(4) Gas calibration method
There are two types of gas calibration: manual calibration (manual start) and automatic calibration(automatic start).
 Automatic calibration needs no extra operation except for initial settings (calibration intervals, gasconcentration) because it starts automatically at-timer-preset intervals.
 Manual calibration is performed by automatically switching each calibration gas solenoid inaccordance with the key operation described below. (This operation occurs regardless of theintervals of automatic calibration.)
If CH No. 26 setting = OFF, sensors that caused an alarm or are excluded from average are notcalibrated.
If CH No. 26 setting = 1,

only sensors selected for CH.No. 27 that caused an alarm or are
excluded from average are also calibrated at the same timing as undernormal conditions.

If CH No. 26 setting = 2,

sensors that caused an alarm or are excluded from average will also becalibrated at 4 points at the same timing as under normal conditions.

Note: All the MAINTE relays are on during calibration.

Precautions for gas calibration in relation to receiver calibration
If a DGO-III receiver and a DGO-201 receiver are used in combination inside the panel, please edit
CH settings in accordance with your calibration sequence and operation method as described below.
To start calibrating the receivers at the same time:
DGO-201  CH No. 26 must be set to 1 or 2.
DGO-III  CH No. 26 must be set to OFF.
For CH No. 27, use the same receiver settings under the same flow conditions.
In addition, the calibration time setting for DGO-201 receiver CH No. 10 must be 5 seconds
longer than that for DGO-III.

To start each receiver in sequence:
DGO-201  CH No. 26 must be set to OFF.
DGO-III  CH No. 26 must be set to ON.
CAUTION: Do NOT perform calibration using another receiver during calibration.

-27-

[1] Manual calibration (individual calibration/overall calibration) key operation and sequenceKey
operation
CAL
1
OR
(2)
OR
(3)
OR
(4)
ENT

MODE
10
C1

DISPLAY
CH

01

C2
C3
C0
01

0A

Sequence

DATA

Start of calibration of sensor
No. 1
CH1 O2 indication No. 1 calibration air inprogress
No. 1 calibration zero inprogress
No. 1 calibration span inprogress
Recovery in progress
Average value O2 Calibration completed

Remarks
Key operation for individual
manual calibration(It is intended to calibrate aparticular sensor. )Note:This operation can be
performed only while in
MAINTE mode.

indication
CAL
0
ENT

10
C1

01

C2
C0

Start of calibration of sensor
No. 1
CH1 O2 indication No. 1 calibration air inprogress
No. 1 calibration zero inprogress
No. 1 recovery in progress
CH2 O2 indication No. 2 calibration air inprogress

Key operation for overallmanual calibration

Automatic calibration is
performed at-preset
intervals in a similarmanner.

C1

02

C0

03

CH3 O2 indication No. 3 recovery in progress

C1

04

CH4 O2 indication No. 4 calibration air inprogress

C004

CH4 O2 indication No. 4 recovery in progress

01

0A

Average value O2 Calibration completed
indication-28-(It is intended to calibrate
all of sensors Nos.1 to 4
consecutively.)In the case of 3-pointcalibration, span calibrationis also performed as
described in the example
above.

Note:
This operation can be
performed only while in
MAINTE mode.

[2] Calibration operation timing chart (2-point calibration when CH024 DATA OFF)

Automatic calibration cycle
timing chart

MAINTE.RY ON
No. 1 being calibrated

No. 2 being calibrated

No. 3 being calibrated

No. 4 being calibrated

CAL.No.1 RY

CAL.No.2 RY

CAL.No.3 RY-29-

CAL.No.4 RY
15sec.

CAL.AIR RY
15sec.

CH10
setting
value

CAL.ZERO RY
CH5 setting
value

RECOVERY TIME

5
sec

5
AIR CAL ZERO CAL Recovery sec

5
sec

5
sec

[2] Calibration operation timing chart (2-point calibration when CH.024 DATA = OFF)CH 004 setting data (xx days xx hours)

Notes: 1. If an external interval timer is provided for automatic calibration, calibration will be triggered by the timer.
2. Individual manual calibration also occurs at similar timing; one of sensors Nos. 1 to 4 is calibrated.
3. If CH No. 26 is OFF, sensors that caused an error or are excluded from average are not calibrated.
If CH No. 26 setting is 1 or 2, sensors that caused an error or are excluded from average will be calibrated at the timing described above.
(Only CH No. 27 selected sensor if CH No. 26 setting is 1)
4. If a calibration trigger occurs during purge, calibration will start after completion of purge. (Manual calibration is invalid.)[3] Calibration operation timing chart (3-point calibration)

Automatic calibration cycle
timing chart

MAINTE.RY ON
No. 1 being calibrated

No. 2 being
calibrated

No. 3 being
calibrated

No. 4 being calibrated

CAL.No.1 RY
CAL.No.2 RY
CAL.No.3 RY
CAL.No.4 RY
15sec.

-30-

CAL.AIR RY
CH10 setting
value

15sec.

CAL.ZERO RY
CH5 setting
value

15sec.

CAL.SPAN RY
CH5 setting
value

RECOVERY TIME
5
sec

5
AIR CAL ZERO CAL SPAN CAL Recovery sec

5sec[3] Calibration operation timing chart (3-point calibration when CH.024 DATA ON)

CH 004 setting data (xx days xx hours)

Notes: 1. If an external interval timer is provided for automatic calibration, calibration will be triggered by the timer.
2. Individual manual calibration also occurs at similar timing; one of sensors Nos. 1 to 4 is calibrated.
3. If CH No. 26 is OFF, sensors that caused an error or are excluded from average are not calibrated.
If CH No. 26 setting is 1 or 2, sensors that caused an error or are excluded from average will be calibrated at the timing described above.
(Only CH No. 27 selected sensor if CH No. 26 setting is 1)
4. If a calibration trigger occurs during purge, calibration will start after completion of purge. (Manual calibration is invalid.)(5) Purge method
There are two types of purge operation: manual purge (manual start) and automatic purge (automatic
start).
 Automatic purge needs no extra operation except for initial settings (purge intervals, purge
ON/OFF) because it starts automatically at-timer-preset intervals.
 Manual calibration is performed by automatically switching each line gas solenoid in accordancewith the key operation described below. (This operation occurs regardless of the intervals of
automatic purge.)
Note: All the MAINTE relays are on during purge.
DGO-III replacement compatible product is not equipped with a purge output port: thisfunction cannot be used.
[1] Manual purge (individual purge/overall purge) key operation and sequenceKey
operation
P
1
OR
(2)
OR
(3)
OR
(4)
ENT
P
0
ENT

MODE
10
P1

DISPLAY
CH
01

P2
P0

01

01

0A

10
P1

01

P2
P0
P1

02

P0

03

P1

04

P2

04

P0

04

01

0A

Sequence

DATA

Average value O2
Start of No. 1 purge (ON)indication
End of No. 1 purge (OFF)
Recovery in progress
Average value O2 Purge completed
indication
Average value O2 Start of No. 1 purge (ON)indication
End of No. 1 purge (OFF)No. 1 recovery in progress
Average value O2 Start of No. 2 purge (ON)indication
Average value O2 No. 3 recovery in progress
indication
Average value O2 Start of No. 4 purge (ON)indication
Average value O2 End of No. 4 purge (OFF)indication
Average value O2 No. 4 recovery in progress
indication
Average value O2 Purge completed
indication-31-

Remarks
Individual manual purge key
operation(It is intended to purge aparticular sensor.)
Note:
This operation can be
performed only while in
MAINTE mode.
Overall manual purge key
operation(It is intended to purge all of
sensors Nos.1 to 4
consecutively.)

Automatic purge isperformed at-preset intervals
in a similar manner.

Note:This operation can be
performed only while in
MAINTE mode.

CH.030 setting data (xx days xx hours)

Automatic purge cycle timing chart
MAINTE.RY
ON

PURGE.No.1 RY

No. 2 being purged
Number of purges = 3 (CH31setting value)

No. 3 being purged

No. 4 being purged5sec
ON OFF ON OFF ON

PURGE.No.3 RY

Purge switch CH 029

PURGE.No.2 RY

No. 1 being purged

Purge 1 Purge 2 Purge 3[2] Purge operation timing chart[2] Purge operation timing chart

32
RECOVERY TIME

Notes: 1. If an external interval timer is provided for automatic purge, purge will be triggered by the timer.
2. Individual manual purge also occurs at similar timing; one of sensors Nos. 1 to 4 is purged.
3. If a purge trigger occurs during calibration, purge will start after completion of calibration.
(Manual calibration is invalid.)
4. DGO-III replacement compatible product is not equipped with a purge output port: this function cannot be used.

DATA ON: Automatic purge, manual purge, or REM purge
DATA ON: Manual purge or REM purge
DATA OFF: REM purge only

PURGE.No.4 RY

5-4 Key operation and information displayed in PRG mode
CH Nos. 1 to 10 can be set while in MAINTE mode as in PRG mode.
Data can be checked while in MAINTE mode .
Key
Item
operation
MODE
1. Calibration gas
CHconcentration
01
air settings
DATA
PG(20.90%)

20.90
ENT
2. Calibration gas
CHconcentration
02
zero setting
DATA
PG(ex. 1.35%)

1.35
ENT
3. Calibration gas
CHconcentration
03
span setting
DATA
PG(ex. 9.68%)

9.68
ENT
4. Automatic calibration
functionInterval setting(ex. 20 days, 6 hours)
5. Calibration time
setting(zero span gas)(ex. 3 minutes 00
seconds)
6. Calibration/purge
recovery time setting(zero span gas)(ex. 1 minute 00
seconds)
7. First-order lag
calculation
time constant setting(ex. 3 seconds)

CH
04
DATA

20.06
ENT
CH
05
DATA

3.00
ENT
CH
06
DATA

1.00
ENT
CH
07
DATA

3
ENT

PG

PG

PG

DISPLAY
CH
01

02

DATA
Existing
setting data
20.90
20.90
Existing
setting data
1.35
1.35

03

Existing
setting data
9.68
9.68

04

Existing
setting data
20.06
20.06

05

06

Existing
setting data
3.00
3.00
Existing
setting data
1.00
1.00

Remarks
Instrumentation air  20.90%
O2
Atmospheric air  20.60% O2
Be sure to check them before
calibration.
Be sure to check the O2
concentration before
calibration.

Be sure to check the O2
concentration before
calibration.
Valid only when 3-pointcalibration selected
0 is acceptable when DATA for
2-point calibration is selected
Setting range: 0 to 99 days
Time: 1 to 23 hours
See the automatic timing chartson pages 28 and 29.
Setting range: 0 to 99 minutes
1 to 59 seconds
See the automatic timing chartson pages 28 and 29.
Setting range: 0 to 99 minutes
1 to 59 seconds
See the calibration timing chartsand purge timing chart on pages
28, 29, and 31.
Setting range: 0 to 99 seconds

PG

07

-33-

Existing
setting data
3
3

Item
8. Hold value setting(preset 1)(ex. 100%)

9. Hold value setting(preset 2)(ex. 50%)

10. Calibration time
setting(air)(ex. 3 minutes 00
seconds)

11. Low range
span setting(ex. 5%)

12. Low range
zero setting(ex. 0%)13. High range
span setting(ex. 25%)

14. High range
zero setting(ex. 0%)Key
operation
CH
08
DATA

100
ENT
CH
09
DATA

50
ENT
CH
10
DATA

3.00
ENT
CH
11
DATA

5
ENT
CH
12
DATA

0
ENT
CH
13
DATA

25
ENT
CH
14
DATA

0
ENT

MODE

DISPLAY
CH

DATA

PG

08

Existing
setting data
100
100

PG

09

Existing
setting data
50
50

PG

10

Existing
setting data〃

Remarks
Note: All current outputs of Nos.
1 to 4 and average O2 value areheld at preset 1 data when PRG
mode is selected.

Setting range: 2 to 60 minutes
0 to 59 seconds

3.00
3.00
PG

11

Existing
setting data
5
5

PG

12

Existing
setting data
0
0

PG

13

Existing
setting data
25
25

PG

14

Existing
setting data00Normally, it does not need to bechanged because it is set inaccordance with thespecifications prior to shipment.

Same as above

Same as above

Same as above

-34-

Item
15. Sensor temperature
low error setting(ex. 600ºC)

16. Sensor temperaturehigh error setting(ex. 700ºC)

17. Purge error

18.WET/DRY
calculation switching

19. Gaseous/solid, liquid
fuel switching

20. Automatic calibration
With/Without setting

21. Calibration
2-point/3-pointswitching

22. Output hold function
selection(ex. hold 2 selected)

Key
operation
CH
15
DATA

600
ENT
CH
16
DATA

700
ENT
CH
17
DATA

-10
ENT
CH
21
DATA


ENT
CH
22
DATA

ON(OFF)
ENT
CH
23
DATA

ON(OFF)
ENT
CH
24
DATA

ON(OFF)
ENT
CH
25
DATA

ON (1 or 2)
ENT

MODE

DISPLAY
CH

PG

15

DATA
Existing
setting data
600
600

PG

16

Existing
setting data

Remarks
Setting range: 300ºC to 1000ºC
Its factory setting corresponds
to the temperature set for theconnected transmitter (ex.
650ºC). Normally, it does notneed to be changed.
same as above

700
700
PG

17

Existing
setting data
-10
-10

PG

21

OFF(ON)〃
ON(OFF)
ON(OFF)

PG

22

OFF(ON)〃
ON(OFF)
ON(OFF)

PG

23

OFF(ON)〃
ON(OFF)
ON(OFF)

PG

24

OFF(ON)〃
ON(OFF)
ON(OFF)

PG

25

OFF (1 or 2)〃
2 (1 or OFF)2 (1 or OFF)-35-

Setting range: -50 to 0 mV
Its factory setting corresponds
to the offset value error limit forthe connected transmitter.
Normally, it does not need to bechanged.
Set it to ON or OFF to enable
or disable DRY calculation,
respectively.
Toggle between ON and OFF
using the  keys.
When performing DRY
calculation, set it to ON or OFF
for solid/liquid or gaseous fuel,respectively.
Toggle between ON and OFF
using the  keys.
Set it to ON or OFF to enable
or disable automatic calibration
calculation, respectively.
Toggle between ON and OFF
using the  keys.
Set it to ON or OFF to perform
air/span/zero 3-point or air/zero
2-point calibration, respectively.
Toggle between ON and OFF
using the  keys.
When hold 1 is selected;
When error occurs  Preset 1 used
During calibration  Preset 2 used
When hold 2 is selected;
When error occurs  Preset 1 used
During calibration 
O2 value obtained justbefore start of calibration
When hold OFF selected;
When error occurs 
O2 value obtained justbefore occurrence
During calibration 
O2 value corresponding tocalibration gas is output
Hold will be performed respectively.
Switch OFF･1･2 using  keys.

Item
23. Calibration operation
selection

Key
operation
CH
26
DATA

ON (1 or 2)
ENT

MODE
PG

DISPLAYCH
26

Remarks

DATA
OFF (1 or 2)

Normally, it does not need to bechanged because it is set inaccordance with thespecifications prior to shipment.

1 or 2 (OFF) OFF: Lines not measured skipped
1: Only sensors with CH27 selected
1 or 2 (OFF) 2: Sensors with CH27 not selected
are also calibrated. (4-point)

24. Sensors Nos. 1 to 4
operation selection(ex.) No.1 to No.3 On
No.4
Off
25. Output timing shift

26. Purge switch
DGO-III replacementcompatible product is not
equipped with a purge
output port: this setting
cannot be used.
27. Automatic purge
Interval setting(ex. 10 days, 6 hours)

28. Number of purges(ex. 5 times)

29. Purge ON time
setting(ex. 10 seconds)

30. Purge OFF time
setting(ex. 10 seconds)

CH
27
DATA

1110
ENT
CH
28
DATA

3
ENT
CH
29
DATA

AON/ONENTDATA display
PG

27

1111
1
1110
1110

PG

28

Existing
setting data

1

1

0

Sensor No. 1/No. 2/No. 3/No. 4
Normally, it is set to 3 seconds.
Setting range: 0 to 30 seconds

Note: The previous value ishold during CH 99
error display delay.
Normally, it does not need to be
OFF/ON/AON changed because it is set inaccordance with thespecifications prior to shipment.
function available only for
AON/ON/OFF OFF: [1] Purge
external input
AON/ON/OFF ON: [2] Manual purge function available + [1]
3
0003

PG

29

AON: Automatic timer-triggered purge
function available + [2]

CH
30
DATA

10.0
6
ENT
CH
31
DATA

5
ENT
CH
32
DATA

10
ENT
CH
33
DATA

10
ENT

PG

30

Existing
setting data
10.00
10.06

Setting range: 0 to 99 days
Time: 0 to 23 hours
See the purge timing chart on
page 32.
Setting range: 1 to 99 cycles

PG

31

Existing
setting data

See the purge timing chart on
page 32.

50005
Setting range: 1 to 99 seconds
PG

32

Existing
setting data
10
10

See the purge timing chart on
page 32.
Setting range: 1 to 99 seconds

PG

33

-36-

Existing
setting data
10
10

See the purge timing chart on
page 32.

Item
31. Each component
setting ingaseous fuelEachcomponent
CO2(ex.1Vo1%)

Key
operation
CH34
DATA

MODE

DISPLAYCH

DATA

Remarks
It needs to be set if
DRY calculation ON
and solid/liquid fuel
OFF.

PG

34

CO
(ex.1Vo1%)

 → 1
ENT
CH35
DATA

Existing
setting data
1
1

PG

35

Same as above

H2(ex.1Vo1%)

 → 1
ENT
CH36
DATA

Existing
setting data
1
1

PG

36

Same as above

CH4(ex.80Vo1%)

 → 1
ENT
CH37
DATA

Existing
setting data
1
1

PG

37

Same as above

C2H6(ex.10Vo1%)

 → 80
ENT
CH38
DATA

Existing
setting data
80
80

PG

38

Same as above

C3H8(ex.2Vo1%)

 → 10
ENT
CH39
DATA

Existing
setting data
10
10

PG

39

Same as above

C4H10(ex.1Vo1%)

 → 2
ENT
CH40
DATA

Existing
setting data
2
2

PG

40

Same as above

C5H12(ex.1Vo1%)

 → 1
ENT
CH41
DATA

Existing
setting data
1
1

PG

41

Same as aboveN2(ex.1Vo1%)

 → 1
ENT
CH42
DATA

Existing
setting data
1
1

PG

42

Same as above

O2(ex.1Vo1%)

 → 1
ENT
CH43
DATA

Existing
setting data
1
1

PG

43

Same as above

H2O(ex.1Vo1%)

 → 1
ENT
CH44
DATA

Existing
setting data
1
1

PG

44

Existing
setting data
11Same as above → 1
ENT

-37-

Item
32. Each component
setting insolid/liquid fuelMODE

DISPLAY
CH

PG

45

H
(ex.10wt%)

 →80
ENT
CH46
DATA

Existing
setting data
80
80

PG

46

Same as aboveS(ex.2wt%)

 →10
ENT
CH47
DATA

Existing
setting data
10
10

PG

47

Same as aboveN(ex.2wt%)

 →2
ENT
CH48
DATA

Existing
setting data
2
2

PG

48

Same as above

H2O(ex.2wt%) → 2
ENT
CH49
DATA

Existing
setting data
2
2

PG

49

Same as aboveO(ex.2wt%) → 2
ENT
CH50
DATA

Existing
setting data
2
2

PG

50

Existing
setting data22Same as above

Each
componentC(ex.80wt%)

Key
operation
CH45
DATA

 → 2
ENT

-38-

DATA

Remarks
It needs to be set if
DRY calculation ON
and solid/liquid fuel O.

Item
33. Temperature control P
constant setting(ex.20%)34. Temperature control I
constant setting(ex.80%)Key
operation
CH51
DATA

20
ENT
CH52
DATA

80
ENT

35. Temperature control
D constant setting(ex. 0 seconds)

CH53
DATA

0
ENT

36. Heater control
temperature setting(ex.650ºC)

CH55
DATA

650
ENT

37. Heat rise error time
setting(ex. 10 minutes)

CH56
DATA

10
ENT
CH
61

38. Sensor electromotive
force monitoring
during previous
calibration
CH.No.61 to 72(ex.)
No. 1 air EMF CH61
No. 4 span EMF CH72
39. Acceptablecalibration range (air)setting(ex.±10mV)
40. Acceptablecalibration range(zero/span) setting(ex.±30%)

CH
72

CH73
DATA

10
ENT
CH74
CH75
DATA

30
ENT

MODE

DISPLAY
CH

PG

51

PG

52

PG

53

PG

55

PG

56

PG

61

PG

72

PG

73

PG

Zero
74
Span
75

-39-

DATA

Remarks

Set to 20% prior to shipment.
Default value Setting range: 0% to 100%
data
Normally, it does not need to be
20
changed.
20
Set to 80 seconds prior to
Default value shipment.
data
Setting range: 0 to 2000
80
seconds
80
Normally, it does not need to bechanged.
Set to 0 seconds prior to
Default value shipment.
data
Setting range: 0 to 2000
0seconds0
Normally, it does not need to bechanged.
Its factory setting corresponds
Default value to the temperature set for thedataconnected transmitter (ex.
650
650ºC).
650
Setting range: 500ºC to 800ºC
Normally, it does not need to bechanged.
Set to 10 minutes prior to
Default value shipment.
data
Setting range :5 to 60 minutes
10
Normally, it does not need to be
10changed.
Sensor EMF Select a CH number to display
indication its sensor electromotive force
obtained during the previous
Sensor EMF calibration.
indication

Set to ±10 mV prior to
Default value shipment.
data
Setting range: ±5 to 50 mV
10Normally, it does not need to be
10changed.
Set to ±30% prior to shipment.
Default value Setting range: ±15% to 50%
data
Normally, it does not need to be
30
changed.
30

Item
41. O2 value monitoring
just before calibration
CHNo.81 to 92

42. Switch CH100 and
subsequentpermission switches
43. Measuring instrument
setting

44. Number of connected
measuring
instruments(total number
including the machine
itself)
45. Average value output
selection
1: Average in machine
itself
2: Average among all
connected machines
3: Average of averages
in connected
machines

MODE
PG

CH82
CH83

PG
PG

82
83

Zero gas O2
span gas O2

CH84

PG

84

Air O2

CH85
CH86

PG
PG

85
86

Zero gas O2
span gas O2

CH87

PG

87

Air O2

CH88

PG

88

Zero gas O2

CH89
CH90
CH91

PG
PG
PG

89
90
91

span gas O2
Air O2
Zero gas O2

CH92

PG

92

span gas O2

CH93

PG

93

****

PG

94

Default value (The compatible replacement is not
equipped with this function.)
data

CH94
DATA

1
ENT
CH95
DATA

1
ENT
CH96
DATA

1
ENT

46. Sensor error
detection
electromotive force(ex.-20mV)

CH97
DATA

-20
ENT

47. Sensor error
detection sensitivity(ex.100%)

CH97
DATA

100
ENT
CH99
DATA

2
ENT

48. Error indication
delay timeDISPLAYCHDATA
81
Air O2Key
operation
CH81

Remarks
Sensor Select a CH number to
No. 1 display its O2 value

Sensor
No. 2

obtained just before
calibration.

SensorNo. 3

SensorNo. 4

Switch CH100 and subsequentswitches are reserved for the
manufacturer.
Set to 1 for master machine

11

Setting range: 1 to 9
Normally, it does not need to bechanged.

Can be used only for master machine

PG

95

PG

96

PG

97

Default value (The compatible replacement is not
equipped with this function.)
data
Setting range: 1 to 9
1
Normally, it does not need to be1changed.
Can be used only for master machine
Default value (The compatible replacement is not
equipped with this function.)
data
Setting range: 1 to 3
1
Normally, it does not need to be1changed.

Set to -20 mV prior to shipment.

PG

98

PG

99

Default value Normally, it does not need to bechanged; it may be changed for early
data
detection of sensor errors.
-20(setting value to be discussed-20
separately)
Setting range: -5 to -20 mV
Set to 100% prior to shipment.
Default value Normally, it does not need to bechanged; it may be changed for early
data
detection of sensor errors. (setting
100
value to be discussed separately)100
Setting range: 10% to 100%
Normally, it is set to 2 seconds.
Default value Setting range: 0 to 30 seconds
Note: If it is longer than the output
data
timing time for CH28, the hold value
2
is used as output value.

0002

5-5 System data setting error-40-Error code

Description

E-33

The following order does not apply: Calibration air gas O2 concentration > Span gas O2
concentration > Calibration zero gas O2 concentration.

E-37

Automatic calibration interval exceeds Calibration time x (Number of calibration points)+ (Calibration recovery) x 4.

E-40

Ranger L zero and span exceeds 100%; or span and zero are same.

E-41

Ranger H zero and span exceeds 100%; or span and zero are same.

E-42

Total gaseous fuel is 100% or more.

E-43

Total of solid and liquid fuel is 100% or more.

E-45

Sensor temperature low error is higher than - 20ºC of Heater temperature setting.

E-46

Sensor temperature high error is lower than +10ºC of Heater temperature setting.

E-54

Automatic calibration interval exceeds (Purge ON time + Purge OFF time) x Number ofpurges + Purge recovery) x 4.

Note: This error code is displayed when switched from PRG mode to MEAS and MAINTE mode. If an error
code is displayed, review the data for the corresponding channel and reset it.

-41-

5-6 Alarm display and operation
Note: --blank
Error description

MODE
displayCH
indicator

1. Power off error--

2. CPU error

Contact output

Current output

Remarks

--

POWER
DOWNN
OFF

RY

0 mA output

All displays and LEDs are
off.

??

??

CPU FAIL RY
ON

Unforeseeable

Normally, it is reset andrestarted.

3. Memory 1 error

E-

10

ANN1 to 4 RY
ON

4 mA output

ROM or RAM error
Measurement canceled

4. Memory 2 error

E-

13

〃

〃

Data cannot be updated.
Measurement canceled(n) indicates a sensor number
Corresponding (i.e., 1, 2, 3, or 4).
output is on Corresponding sensor
holdmeasurement canceled andtemperature control stopped

5. Thermocouple
error

E1

0(n)

Corresponding
ANN RY ON

6. Heat rise error

E2

0(n)

〃

〃

Same as above

7. Sensor
temperature low
error

E3

0(n)

〃

〃

Same as above

8. Sensor
temperaturehigh error

E4

0(n)

〃

〃

Same as above

9. Sensor error

E5

0(n)

〃

〃

(n) indicates a sensor number(i.e., 1, 2, 3, or 4).
Corresponding sensor
measurement canceled andtemperature control going on

10. Early sensor
detection error

EA

0(n)

〃

〃

Same as above

11. Air calibration
error

E6

0(n)

〃

〃

Same as above

12. Zero and spancalibration error

E7

0(n)

〃

〃

Same as above

13. Purge error

E8

0(n)

ANN1 to 4 RY
ON〃

14. Thermistor
error

E9

0A

〃

4 mA output-42-

Sensor error (filter clogged)
during purge Corresponding
sensor measurement
canceled and temperature
control continues
Thermistor
disconnected/short-circuited
Corresponding sensor
measurement canceled andtemperature control
continues

[1] Error retention: Of the error indications described above, E1 to E9 continue to be displayed. Therefore,clear the error indication after inspection and correction of the faulty part.
To clear the error indication, press the CLR and ENT keys while in MEAS. or MAINTE. mode.
(See [4] for details.)[2] With E1 to E9 or during startup, the corresponding individual output is held at preset value when hold
ON. When hold OFF, the output is held at the O2 value obtained just before detection of the error.
By average value output, the average values in sensors than those during temperature rising/calibration or
during occurrence of one of errors E1 to E9 are output. Outputs 4 mA if all the sensors meet theconditions described above.
[3] Error indication clearing: If any of errors E1 to E9 occur, inspect and correct the faulty parts and thenperform the error reset operations described below.
Key
operation
procedure

DISPLAY
MODE

CH

E( )

0( )

DATA

Remarks

Average value O2 Error displayed
indicationc1
r“Clear error” displayed.
CLR
Err
ENT
01
0A
Press the entry key to clear the error.
Average value O2 If the faulty state continues, the error
indication
will be displayed again.
Note: If you turn off the power to the receiver and turn it back on, this operation will not be needed.

-43-

6. Troubleshooting(1) Inspection items and corrective action against each error[1] ·······················E1

Thermocouple error ·············································P45[2] ·······················E2

Heat rise error ··················································P46[3] ·······················E3Temperature low error ··········································P47[4] ·······················E4Temperature high error ·········································P48[5] ·······················E5, EA

Sensor (early detection) error ································P49[6] ·······················E6

Air calibration error·············································P51[7] ·······················E7

Zero and span calibration error································P51[8] ·······················E8

Purge error ·······················································P52[9] ·······················E9

Thermistor error ·················································P52[10] ·······················E10

Memory 1 error··················································P52

E13Memory 2 error??

CPU error(2) Failure and countermeasure[1] ···························

No information displayed after power on ···························P53[2] ···························

Incorrect value displayed after calibration gas fed ················P54[3] ···························

Display “pulsates” after calibration gas fed ·······················P55[4] ···························

Sample gas reading is low·············································P56[5] ···························

Sample gas reading is 25% O2 or more ·····························P57[6] ···························

Indicated value is high (low) compared to other instruments ····P58[7] ···························

Response speed is very low ·········································P59[8] ···························

Calibration gas does not flow ·········································P60[9] ···························All indicated values (EMF, TEMP, indication) go off the scale ·P61

[10] ···························

Current output is zero or remains off the scale ·····················P62-44-

[1] E1 Thermocouple error(i)Short the receiver thermocouple’s terminal block with the receiver power on (heater powerswitch off).
Receiver thermocouple terminals: K1+ and K1-, K2+ and K2-, K3+ and K3-, K4+ and K4Compatible replacement: No.1 = 5 and 6, No.2 =9 and 10, No.3 = 13 and 14, No.4 = 17 and 18
In this condition, press the CLR and ENT keys to perform error recovery reset. If E1 does notdisappear. there may be a fault in the internal electronic circuit of the receiver. If E1 disappears
when the terminal block is shorted, there may be a fault in the thermocouple.

(ii) Inspection of thermocouple
Remove the wire originating from the thermocouple on the corresponding channel at the probetransmitter’s terminal block and check the continuity of the thermocouple. If no current isflowing through the thermocouple (i.e., infinite resistance), it may be disconnected (broken
wire). Contact the manufacturer.
If current is flowing through the thermocouple, there may a fault such as contact failure between
the receiver and probe transmitter.
Inspect and repair.

-45-[2] E2 Heat rise error(i)Heater resistance check (see the delivery drawing for terminal numbers (terminal No.○-○).
Turn off the heater switch on the probe transmitter that caused the E2 error.
Remove the corresponding probe transmitter’s heater wires (No. 1 ○-○, No.2 ○-○, No.3○-○,
No.4○-○) from the terminal block externally connected to the analyzer panel and check theheater resistance using a digital multimeter, etc. *See the circuit diagrams for terminal numbers.
If the measured value is 10Ω to 30Ω, inspect it as described in (ii) and subsequent paragraphs.
If the measured value is more than 30Ω, also measure the heater resistance on the probetransmitter.
If the measured value is 10Ω to 20Ω, there may be contact failure at the wire crimp area, etc.
between the panel and probe transmitter. Inspect and repair the wiring.
If the measured value is more than 30Ω, the probe transmitter may have a broken heater wire;
contact the manufacturer.

(ii) Check the voltage applied to the heater (see the delivery drawing for terminal numbers(terminal No.○-○).
Put the probe transmitter and the wires inside the panel back into place and turn on the heater
switch.
Reset the alarm by pressing the CLR key and then the ENT key and restart the temperature rise.
Measure the corresponding probe transmitter’s heater voltage on the terminal block externallyconnected to the analyzer panel (No. 1 ○-○, No.2 ○-○, No.3○-○, No.4○-○) using a digital
multimeter, etc.
It is normally approx. 30 to 40 VAC during heat rise.
It is 20 to 30 VAC during temperature control.

Under normal conditions

If it is 30 VAC or less even with measurement during temperature rise, the power line may be
faulty. Check the voltage, etc. of the main power supply and repair the faulty area.
If temperature rise is not completed within about 10 minutes even if the measured value within
the range expected under normal conditions, the receiver may be faulty; contact the
manufacturer.

-46-

[3] E3 Temperature low error(i)Check the sensor temperature (power remains on after occurrence of error).
Check the corresponding probe transmitter’s sensor temperature using the keys.
Reset the alarm by using the CLR and ENT keys and check to see if temperature rise ispossible.
At this point, if the sensor temperature does not rise from normal temperature or sample gas
temperature, the heater may have a broken wire; check the heater resistance as described in
(ii).

(ii)

Heater resistance check (see the delivery drawing for terminal numbers (terminal No.○-○).
Turn off the corresponding probe transmitter’s heater power switch and remove the wires
originating from the terminal block externally connected to the analyzer panel (No. 1 ○-○,
No.2 ○-○, No.3○-○, No.4○-○) and check the resistance between wires (heater resistance)
using a digital multimeter, etc. Normally, the heater resistance is approximately 15 to 30 Ω. If
the heater resistance is infinite, measure the heater resistance on the transmitter’s heater
terminal block. At this point, if the heater resistance is 10 to 20Ω. the heater cable between thetransmitter and receiver is faulty (broken etc.), replace it. If the heater resistance is infinite
even when measured on the transmitter, the heater has a broken wire: replace the heater.

(iii)

No fault is found by making checks as described in (i) and (ii).
Put the wires back into place, turn off the heater power switch off and then on again, press the
CRL and ENT keys on the receiver panel to restart temperature rise.
Measure the thermocouple electromotive force.
Measure the thermocouple electromotive force.on the receiver terminal block using a digital
multimeter.
Receiver thermocouple terminals: K1+ and K1-, K2+ and K2-, K3+ and K3-, K4+ and K4Compatible replacement: No.1 = 5 and 6, No.2 =9 and 10, No.3 = 13 and 14, No.4 = 17 and
18
Find the temperature corresponding to this measured value referring to the conversion table(attached sheet) and compare it with the temperature indicated on the receiver.
If the reading on the multimeter is not consistent with the value indicated on the receiver, turnoff the heater power switch.
There may be a faulty in the internal circuit of the receiver, contact the manufacturer.

-47-

[4] E4 Temperature high error(i)Check the power supply voltage.
Use a digital multimeter, etc. to verify whether the corresponding probe transmitter’s heater
voltage is within 35±10 VAC on the terminal block externally connected to the analyzer.
If it is not within 35±10 VAC, check and repair the power supply.

(ii)

Check the corresponding probe transmitter’s sensor temperature using the keys.

(iii)

Record the sensor temperature reading and check for variations in the reading.

(iv)

Measure the thermocouple electromotive force.
Measure the thermocouple electromotive force.on the receiver terminal block using a digital
multimeter.
Receiver thermocouple terminals: K1+ and K1-, K2+ and K2-, K3+ and K3-, K4+ and K4Compatible replacement: No.1 = 5 and 6, No.2 =9 and 10, No.3 = 13 and 14, No.4 = 17 and
18
Find the temperature corresponding to this measured value referring to the conversion table(attached sheet) and compare it with the temperature indicated on the receiver.
If the reading on the multimeter is not consistent with the value indicated on the receiver, turnoff the heater power switch.
There may be a faulty in the internal circuit of the receiver, contact the manufacturer.

-48-

[5] E5, EA Sensor (early detection) error(i)Short the corresponding probe cell input on the receiver terminal block. Display thecorresponding sensor’s EMF value. If the reading is below -20 mV, there may be a fault in theinternal electronic circuit of the receiver.
If the EMF reading is 0 mV when shorted, there may be a fault in the sensor.
Receiver thermocouple terminals: CELL1+ and CELL1-, CELL2+ and CELL2-,
CELL3+ and CELL3-, Cell4+ and Cell4Compatible replacement terminals: No. 1 = 3 and 4, No. 2 = 7 and 8, No. 3 = 11 and 12,
No. 4 = 15 and 16(ii)

Sensor check
Check the continuity of the sensor cable between the transmitter and receiver.
Remove the cell wires from the corresponding probe transmitter terminal block and shortthe + and − wires.
Remove the cell input wires from the receiver and check the continuity of the cable.
If the cable resistance is less than a few ohms, the sensor may be producing an abnormal
electromotive force due to its degradation; it needs to be replaced.
If the cable resistance is more than a few ohms, there may a broken wire or poor contact.
Check and repair the cable line.

(iii)

Sensor resistance check
Verify that the sensor temperature is equal to the temperature set for the connected transmitter(ex. 650ºC) on the receiver with the heater switch on.
Remove the cell wires (+ and − wires) from the probe transmitter terminal block (payattention to the AC voltage being applied to the heater) and measure the sensor resistance
between Cell

+ and − of the probe transmitter terminal block using a digital multimeter.

(Take two measurements for + polarity and− polarity.)

If the measured value is approximately 50 kΩ, there may a broken lead wire in the probetransmitter; it needs to be repaired.
(iv)

Sensor error and early sensor detection error
Initial setting is sensor error: E5. (CH97:-2 0 mV. CH98: 100%) The receiver has a function
for early detection of sensor errors; CH97: faulty sensor electromotive force and CH98: sensor
error detection sensitivity can be set.
It is effective for early detection of sensor errors in combustion control, etc.
If this function is used (changes made to the initial settings), an early sensor detection error: EA
will be displayed.
See the next page for a general description of the early sensor error detection function.

-49-

-50-

1st Sensor 2nd Sensor 3rd Sensor 4th Sensor 5th Sensor 6th
signalsignalsignalsignalsignalSensorcapturecapturecapturecapturecapture signal
capture1 sec

7th Sensor 8th Sensor 9th Sensor 10th
signalsignalsignalSensorcapturecapturecapturesignalcaptureCH99 = 3 sec

Upper limit alarm detected electromotive force (CH97): -15mV
Alarm detection range (CH98): 75%
Error output delay time (CH99): 3 sec

1st Sensor 2nd Sensor 3rd Sensor 4th Sensor
signalsignalsignal capture
signalcapturecapturecaptureCH99 = 1 sec

11th
12th Sensor
Sensor signal
signalcapturecaptureDetected electromotive force (mV)Pattern 1 Pattern 2
Pattern 3
Pattern 4
Pattern 5
1st
-18
-3
-18
-18
-18
2nd
-18
-18
-18
-18
-18
rd
3
-18
-4
-3
-18
-18
th
4
-18
-18
-4
-18
-14
th
5
-18
-18
-18
-18
-18
th
6
-18
-18
-18
-18
-10
th
7
-18
-18
-3
-18
-18
8th
-18
-18
-18
-18
-18
9th
-18
-18
-18
-18
-9
th
10
-3
-3
-18
-18
-18
th
11
-3
-18
-18
-18
-3
12th
-3
-3
-18
-18
-18
ANN
ANN
ANN
ANN
ANN
−
alarm
outputoutputoutputoutputAlarm range (CH98): 75% is defined as follows;ANN output if electromotive force exceeded 9 times or more during CH99
= 3 sec＝4 times/sec (12 times of capturing)

Example)Detected electromotive force (mV)Pattern
Pattern
Pattern
Pattern
Pattern
1
2
3
4
5
1st
-18
-3
-18
-3
-3
2nd
-3
-18
-18
-18
-18
3rd
-4
-4
-3
-18
-3
4th
-3
-3
-4
-4
-18
ANN
ANN
ANN
ANN
ANN
ANN
alarm
outputoutputoutputoutputoutputAlarm range (CH98): 25% is defined as follows;ANN output if electromotive force exceeded once or more during CH99
= 1 sec＝4 times of capturing

Example)CaptureUpper limit alarm detected electromotive force (CH97): -15mV
Alarm detection range (CH98): 25%
Error output delay time (CH99): 1 sec

Capture−Pattern 6
-18
-18
-18
-3
-18
-18
-18
-14
-9
-10
-14
-18

[6] E6 Air calibration error
Air concentration setting value check(i)

Verify whether air point O2 concentration 20.6% (20.90%) is correctly set CH for No. 1.
If not, correct the setting and perform gas calibration again in accordance with the instruction
manual.

(ii)

Sensor electromotive force check[1] Sensor electromotive force check during gas calibration
Use the keys to check the sensor electromotive force during gas calibration.
Correct gas calibration can be performed if sensor electromotive force is with the range of -10
to +10 mV.
[2] If the sensor electromotive force is outside the range of -10 to +10 mV in [1], measure thesensor input voltage on the receiver terminal bock using a digital multimeter, etc.
If the sensor electromotive force reading on the receiver is not consistent with the measured
voltage value, there may be a fault in the internal electronic circuit of the receiver.
If they are consistent with each other, there may be a fault in the transmitter; inspect it as
described in (2) - [2].
[7] E7 Zero and span gas calibration error
Zero and span gas concentration setting value check(i)

Check the gas concentration value in the standard cylinder for zero gas and span gas. Verify
whether the correct zero and span gas concentration values are set for CH Nos. 2 and 3 in
PRG mode. If they are not correct, reset them correctly and recalibrate the corresponding
probe transmitter as described on page 28.
(ii)

Sensor electromotive force check[1] When performing gas calibration as described in (i), check the sensor electromotive force.
Also check the sensor electromotive force during zero/span gas feed.
If the sensor electromotive force is within ±30% of sensor electromotive force, gas calibration
can be performed.
[2] If the sensor electromotive force is outside the ±30% range in [1], measure the sensor input
voltage on the receiver terminal bock using a digital multimeter, etc.
If the sensor electromotive force reading on the receiver is not consistent with the measured
voltage value, there may be a fault in the internal electronic circuit of the receiver.
If they are consistent with each other, there may be a fault in the transmitter; inspect it as
described in [5] (ii) on page 49.

-51-

[8] E8 Purge error(i)Check for sensor error “E5 Sensor error (i).”(ii) Sensor check
The sensor filter may have got clogged during purge.
The filter needs to be replaced.
[9] E9. Thermistor error
The thermistor may have a broken wire or may be short circuited.
Measure the thermistor resistance value.
(Standard product: P7 terminal block arrangement diagram “C.J±” part is a thermistor,)(DGO-III replacement compatible product: P9 terminal block arrangement diagram “C.J±” part is athermistor,)
To measure the resistance value, remove the thermistor positive terminal and measure the resistanceof the thermistor.
It is acceptable if it is within the range of approximately 3 to 50 kΩ.
[10] E10 Memory 1 error (memory IC error)
E13 Memory 2 error (EEPROM malfunction)??

CPU error

These error codes may be displayed if there is a fault in the receiver or digital circuit.
Such an error may occur due to Instantaneous noise, etc. If this is the case, turn off the power to thereceiver and turn it back on. If the receiver returns to normal operation after this operation, the error isthought to have occurred due to external noise. Consider taking measures against noise. If it does not
return to normal operation after its power is turned off and back on, there may be a faulty in theinternal circuit of the receiver, contact the manufacturer.

-52-

(2) Failure and countermeasure[1] No information displayed after power on.

Power onIs 100 VAC power
being supplied?

No

Turn on the main
power supply.

No

POWER switch on

Yes

Replace the fuse.

Yes

Is the POWER switch on ?
(switch on the panel)Yes

Is the fuse blown?
Yes

It is necessary to repair the
DC power circuit or replace
the printed board.

-53-[2] Incorrect value displayed after calibration gas fed.

Incorrect value
displayed

Is the terminal block (sensor
electromotive force) input
value consistent with theindicated value?

No

Input circuit needs to beinspected and repaired.

No

It needs to inspected for
failures such as a clogged
valve, etc.

Yes

Repair the leaky area.

Yes

Re-calibrate

Yes

RepairYes

Feed calibration gas.

Can it be set to 3 to 5
L/min?
Yes

Is the correction gas
pipe leaking?
No

Indication canbe corrected?
No

Wiring/cell lead wire contact
failure?
(Wiring resistance measurement
approx. 1000 Ω or more?)No
Replace the defective
detection cell.

-54-[3] Display “pulsates” after calibration gas fed

Feed indicated value gas.

Is sensor electromotive
force stable?

No

Is the correction gas path leaking?

No

Input circuit needs to be inspected andrepaired.

Yes

Is the receiverelectromotive force
reading stable?
Yes
Internal circuit
needs to fault
inspection andrepair.

-55-

[4] Sample gas reading is low.

Indicated value is low.

Just after application of
Molykote (screw)
sintering inhibitor?

2 to 3 hours of aging needed due to
low O2 resulting from combustionof Molykote.

Yes

No

Is the indicated value roughly
equal to the calibration gas O2
concentration after calibration
gas feed?

Yes

Can gascalibration be
performed?

No

Is the cell input terminal
voltage consistent with theelectromotive force reading?

Yes

No

Yes

Sensor needs tobe replaced.

Does the output
signal correspond to
the indicated value?

No

Yes

Internal circuit
needs to beinspected andrepaired.

-56-

Perform
calibration.

No

Output signal
needs to be
adjusted.

Deemed acceptable because it
resulted from flammable gas insample gas.

[5] Sample gas reading is 25% O2 or more.

Indicated value 25 O2 vol%.

Is the indicated value
roughly equal to thecalibration gas
concentration after
calibration gas feed?

Yes

Can gas calibration
be performed?

No

Is the cell input terminal
voltage consistent with theelectromotive force reading?

No

Yes

No

Yes

Does the output
signal correspondto the indicatedvalue?
No

Input circuit needs
to be inspected andrepaired.

-57-

Perform gas
calibration.
Sensor, etc.
probe transmitter
needs to be inspected
and repaired.

Yes

Deemed acceptablebecause it resulted
from gas in sample
gas.
Output circuit error
Needs to bereadjusted or
repaired.

[6] Indicated value is high (low) compared to other instruments.

Indicated value error

Is indication
calibrated?

No

Is the calibration
gas reading
correct?

No

Yes

Is reference air
flowing at approx. 3
/min?

No

Adjust the reference air flow rate.

Yes

Is sample gas
response slow?

No

See the next section.

Yes
Compare theindicated value
again after sampling
position depth
adjustment.

-58-

Perform gas
calibration.

[7] Response speed is very low.

Feed calibrationgas.

Does calibration gas
flow?

No

Needs clogging, etc.
inspection and repair.

Yes

Clogged filter
Clogged sample gas pathYes

Is detection cell
response appropriate incalibration gas?

No

Is the correction
gas path leaking?

Yes

Leaky area needs to be repaired.

No
Detection cell
replacement timingneeds to be
determined.

-59-

[8] Calibration gas does not flow.

Calibration gas does
not flow.

Is there any residualpressure in the calibration
gas cylinder?

No

Replace the calibration
gas cylinder.

Yes

Is the flow rate
indicated on thecalibration gas flow
meter?

No

Is any gas leaking fromthe pipe/flow meter
between the cylinder andcalibration gas flow
meter?

No

Flowing at 2 to 5
/min?

Correct theleaky area.

Yes
No

Yes

Does the reading on
the O2 meter indicate
the O2 concentration in
the calibration gas?

No

Cloggedpipe/flow meter.
Needs to becleaned.

Leaking from pipe
between calibration gas
flow meter andtransmitter
Needs to be inspected
and repaired.

No

Yes
Transmitter
calibration gas pipe
is leaking.
Needs to beinspected andrepaired.

-60-

[9] All indicated values (EMF, TEMP, indication) go off the scale.

Indicated values go off
the scale.

Is the terminal block(sensor EMF
thermocouple) input value
consistent with theindicated value?

No

Input circuit
Needs to beinspected andrepaired.

No

Terminal block (sensor EMF
thermocouple)
Short each pair of (-) and (+)
and verify that EMF = 0 and
TEMP = ambient
temperature [ºC].

No

Input circuit
Needs to beinspected andrepaired.

Yes
There is a fault in the external
wiring or probe transmitter.
Needs to be inspected andrepaired.

-61-

[10] Current output is zero or remains off the scale.
Output is faulty.

Is individual/averagevalue O2 concentration
reading within the range
of use?

No

Yes

Is the indicated value
roughly equal to the gas
concentration whencalibration gas fed?

Yes
Is the current value
measured on the receiver
output terminal with thedigital multimetercorrect?

No

Output circuit
Needs to beinspected andrepaired.

Yes
There may be a fault in theexternal wiring or the externalconverter/recorder, etc. Needs to
be inspected and repaired.

-62-

No

P51 needs to beinspected.

Channel Data List (Initial values may differ according to delivery specifications.)
Initial
value
20.90
1.500
9.50
10D00H
03M00S
01M00S1
0.0
0.0
03M00S
5.00
0.00
25.0
0.00
600
700
-10
OFF
OFF
OFF
ON
OFF
OFF

CH

Description

Range

001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
016
017
018
019
020
021
022
023
024
025
026

Calibration air gas concentration
Calibration zero gas concentration
Calibration span gas calibration
Automatic calibration interval
Calibration time
Calibration, purge recovery timeFirst-order lag time constantHold data (preset 1)
Hold data (preset 2)
Calibration time (air induction time)
Low range spanLow range zeroHigh range span
High range zeroSensor temperature low error
Sensor temperature high error
Purge error
DRY calculation switch
Gaseous/solid and liquid fuel switch
Automatic calibration switch
3-point calibration switch
Output hold switch
Calibration operation selection
switch027

1111

0000 to 1111

028
029

Sensors Nos. 1 to 4 operation
selection switch
Output timing shift
Purge switch

3OFF

0 to 30
ON/OFF/AON

030
031
032
033
034
035
036
037
038
039
040
041
042
043
044
045
046
047
048
049
050

Automatic purge interval
Number of purges
Purge ON time
Purge OFF time
CO2 content in gaseous fuel
CO content in liquid fuelH2 content in gaseous fuelCH4 content in gaseous fuelC2H6 content in gaseous fuelC3H8 content in gaseous fuelC4H10 content in gaseous fuelC5H12 content in gaseous fuelN2 content in gaseous fuelO2 content in gaseous fuelH2O content in gaseous fuelC content in solid/liquid fuelH content in solid/liquid fuelS content in solid/liquid fuelN content in solid/liquid fuelH2O content in solid/liquid fuelO content in solid/liquid fuel

07D00H
5
10
10
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

00D01H to 99D23H

1.00 to 100.00
0.001 to 25.000
0.01 to 100.00
00D01H to 99D23H
01M00S to 99M59S
00M00S to 99M59S

0 to 99
0.0 to 100.0
0.0 to 100.0
01M00S to 99M59S

0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
300 to 1000
300 to 1000
-50 to 0
ON/OFF
ON/OFF
ON/OFF
ON/OFF
OFF/1/2
1/2/OFF

1 to 99
1 to 99
1 to 99
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00
0.00 to 100.00-63-

Remarks[%][%][%]
Date and time
Minutes and seconds
Minutes and seconds
[sec]
[%]
[%]
Minutes and seconds
[%]
[%]
[%]
[%]
[ºC]
[ºC]
[mV]
ON for DRY calculation
ON for solid and liquid fuelON for timer calibration
ON for 3-point calibration
OFF/Hold 1/Hold 2
OFF to skip and interlock
channels not measured.
1 to operate only CH 27 sensor.
2 to operate all four sensors.
MSB is sensor No. 1[sec]
OFF for external input only, ON
manually is also possible, andtimer can also be used with AON
Date and time
(Number of) times
[sec]
[sec]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]

Settingvalue

CHDescription

051

Temperature control P constantsetting
Temperature control I constantsetting
Temperature control D constantsetting
Heater temperature setting
Heat rise error time setting
Sensor No. 1 air calibration EMF
Sensor No. 1 zero calibration EMF
Sensor No. 1 span calibration EMF
Sensor No. 2 air calibration EMF
Sensor No. 2 zero calibration EMF
Sensor No. 2 span calibration EMF
Sensor No. 3 air calibration EMF
Sensor No. 3 zero calibration EMF
Sensor No. 3 span calibration EMF
Sensor No. 4 air calibration EMF
Sensor No. 4 zero calibration EMF
Sensor No. 4 span calibration EMF
Acceptable calibration range (air)Acceptable calibration range (zero)
Acceptable calibration range (span)
-

052
053
054
055
056
057
058
059
060
061
062
063
064
065
066
067
068
069
070
071
072
073
074
075
076
077
078
079
080
081
082
083
084
085
086
087
088
089
090
091
092
093

Sensor No. 1 air oxygen concentration
Sensor No. 1 zero oxygen concentration
Sensor No. 1 span oxygen concentration
Sensor No. 2 air oxygen concentration
Sensor No. 2 zero oxygen concentration
Sensor No. 2 span oxygen concentration
Sensor No. 3 air oxygen concentration
Sensor No. 3 zero oxygen concentration
Sensor No. 3 span oxygen concentration
Sensor No. 4 air oxygen concentration
Sensor No. 4 zero oxygen concentration
Sensor No. 4 span oxygen concentration
Switch CH100 and subsequent switches
that can be used

Initialvalue
20.0

0.0 to 100.0

[%]

80.0

0 to 2000

[sec]

0.0

0 to 2000

[sec]

650
10
0.00
52.10
15.39
0.00
52.10
15.39
0.00
52.10
15.39
0.00
52.10
15.39
10.0
30.0
30.0
20.60
1.500
9.50
20.60
1.500
9.50
20.60
1.500
9.50
20.60
1.500
9.50
-

500 to 800
5 to 60-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00-50.00 to 150.00
5.0 to 20.0
15.0 to 50.0
15.0 to 50.0
0.00 to 200.00
0.000 to 50.000
0.00 to 200.00
0.00 to 200.00
0.000 to 50.000
0.00 to 200.00
0.00 to 200.00
0.000 to 50.000
0.00 to 200.00
0.00 to 200.00
0.000 to 50.000
0.00 to 200.00
―

[ºC]
[min]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[mV]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
[%]
―

Range

Remarks

094
095

Machine setting
Number of machines

11

1 to 91 to 9096

Average value output selection
switchSensor error detection electromotive
force
Sensor error detection sensitivity
Error indication delay time1

1 to 3-20-20 to -5(Master when 1)(Available only for mastermachine, including machine
itself)(Available only for mastermachine)
[mV]

100
2

10 to 100
1 to 30

[%]
[sec]

097
098
099

-64-

Settingvalue

The contents of this manual are subject to change without notice for improvement.
For inquiries regarding product handling, please contact us or our distributors.
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ENERGY SUPPORT CORPORATION
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