Manual No.3225E R2Operation Manual for
DTF-201R
Oxygen Analyzer

RX-622310-A＊＊＊＊＊READ THE OPERATION MANUAL.

Cautionary items for safety
Observe the following cautionary items for safe operation of the device.
Warning
1. When connecting wiring at the terminal of the analyzer, be careful to avoid electric shock.
Be sure to turn the power off before connecting wiring.
2. Connect a grounding cable to avoid electric shock.
3. Be sure to close the gas source valve before installing gas inlet and outlet pipes for thesensor or disconnecting piping for maintenance, so that gas intoxication or oxygen
deficiency does not occur.
To avoid gas intoxication and oxygen deficiency, perform a gas leak test after installing gas
inlet and outlet pipes for the sensor or performing maintenance of them.
Caution
1. To avoid electric shock, check for correct power supply wiring and agreement between the
supply voltage requirement of the device and the supplied voltage before turning on the
power switch of the device.
2. To avoid gas intoxication and oxygen deficiency, check for correct piping at the gas inlet
and outlet of the sensor and gas leakage before opening the gas source valve.
3. Keep away from the sensor and its periphery during operation and shortly after operation
stop to avoid burns caused by high temperatures. If maintenance is inevitably necessary,
wear heat resistant gloves or the like and be careful to avoid burns.
4. An “electric shock” warning mark shown on the right is attached near the
power supply where there is a danger of electric shock. If the wiring
circuit is unknown, turn the power off even when no electric shockwarning mark is attached.
5. If the sample gas includes toxic contents, there is a danger of gas intoxication. Be sure to
shut off the source gas valve when performing maintenance of the piping system.
6. For safe and correct use of the device, observe the cautions and handling methods
described in this operation manual. If the device is operated without observing description
herein, there is a danger of electric shock, gas intoxication, oxygen deficiency and burns aswell as damage to the device, deterioration of functions or possible damage to the final
product (system, etc.).

Guarantee
1. Term
The term of guarantee of a single piece of equipment shall be one year since the productis delivered. However, if the equipment is built in another unit, the term of guarantee shallbe that of the unit. The single unit delivery meant that the receiver, sensor unit, cable aredelivered as single unit whereas the equipment built in another unit meant the equipment
by combining the sampling flow or to combine to another units are delivered as built-indelivery.
2. Conditions
The delivered product shall be exchanged or repaired free of charge if it fails or any
abnormality is generated due to poor workmanship in design, manufacture or material
attributable to ENERGY SUPPORT CORP. in the above-mentioned term of guaranteethough it is operated properly after it is stored and installed properly after it is delivered tothe client.
The proper operating method includes the following.
① The installation conditions and operation conditions described in the specifications of
this measuring tool and this operation manual are satisfied.
② The analyzer is periodically calibrated and replacement of consumable parts is made.
③ Periodic maintenance and inspection are made according to the operating state of theanalyzer.
However, the following cases shall be excluded from the scope of guarantee even if theyoccur in the above-mentioned term of guarantee.
1) Failure generated due to operation errors (erroneous operation not described inoperation manual)2) Failure caused by repairs, remodeling, disassembly, cleaning and so on made byother than us3) Failure caused by fire or act of God (including inductive lightning surge)
4) Failure caused by improper storage (storage in a hot and humid site, etc.) or lack ofmaintenance (generation of fungi, etc.)
Note) Consumable parts and consumable components are excluded from the scope ofguarantee.
3. Scope
The scope of guarantee shall be limited to the range delivered by us.
4. Indemnity
We will not assume responsibility for any accompanying losses caused by the failure of
our product (losses, lost profits and so on caused by the controlled or recorded results
made under the use of our product, or losses, lost profits and so on caused by thesystem in which our product is installed.). Safety units or the like shall be installed under
the responsibility of the client.
5. Term of supply of replacement parts or repair① Repairs or replacement with alternative product will be made with charge for sevenyears after manufacture of the product is stopped.
② We may reject even charged repairs of products passing 10 years or more after
delivery.

Contents
1. General items-------------------------------------------------------------------------------------------------------------- 1
1-1 Introduction -------------------------------------------------------------------------------------------------------- 1
1-2 Precautions for operation -------------------------------------------------------------------------------------- 1
1-3 Outline of product ------------------------------------------------------------------------------------------------ 1
1-4 Name of each part ----------------------------------------------------------------------------------------------- 4
2. Unpacking ------------------------------------------------------------------------------------------------------------------ 5
2-1 Check of delivered product and accessories ------------------------------------------------------------- 5
2-2 Temporary storage of product -------------------------------------------------------------------------------- 5
3. Installation ------------------------------------------------------------------------------------------------------------------ 5
3-1 Installation conditions ------------------------------------------------------------------------------------------- 5
3-2 Installation method ---------------------------------------------------------------------------------------------- 6
3-3 Piping and wiring method -------------------------------------------------------------------------------------- 6
4. Operation ------------------------------------------------------------------------------------------------------------------- 8
4-1 Preparation for operation -------------------------------------------------------------------------------------- 8
4-2 Starting ------------------------------------------------------------------------------------------------------------- 9
4-3 Stopping ---------------------------------------------------------------------------------------------------------- 10
4-4 Operation to be made during operation ------------------------------------------------------------------ 10
4-5 Operation to be made upon occurrence of an error -------------------------------------------------- 18
4-6 Application operations ---------------------------------------------------------------------------------------- 18
5. Maintenance ------------------------------------------------------------------------------------------------------------- 21
5-1 Daily and periodic inspection ------------------------------------------------------------------------------- 21
5-2 Troubleshooting ------------------------------------------------------------------------------------------------ 22
6. Reference data ---------------------------------------------------------------------------------------------------------- 24
6-1 Standard specification ---------------------------------------------------------------------------------------- 24

1. General items
1-1 Introduction
The DTF-201R Oxygen Analyzer has been produced thanks to the latest ceramics
production technology by applying the thick-film sensor and digital signal processing
technology.
This operation manual explains how to operate the DTF-201R oxygen analyzer.
Read through the operation manual and operate our product over a long time.

1-2 Precautions for operation
・ Avoid installing to a site susceptible to vibration.
・ Do not splash water or evaporative liquids on the receiver or sensor.
・ The sample gas must be free from corrosive gases (F, HF, CL2, HCL, SO2, H2S, etc.)
and poisoning materials (Si, Pb, P, Zn, Sn, As, etc.). If these gases are included, thesensor life may become short.
・ The sample gas must be free from flammable gases. If flammable gases are included,
the oxygen concentration measurement will include an error.
・ The major usage of this oxygen analyzer is for atmospheric oxygen measurement atboiler, Heating furnac
・The lower limit of operation is about 0.65 of air ratio m. If the device is operated in anenvironment exceeding this limit, the oxygen in the zirconia porcelain may beelectrolyzed, causing deterioration of the sensor.

1-3 Outline of product
The DTF-201R oxygen analyzer features the following.
・ With one calibration of the air sample point is possible.
・ Compact size.(Small installation space.)
・ Maintenance is easy.
・ Low power consumption by the sensor.(About 13 W for normal use.)
・ Short warm up time.
・ No power switch.
・ For the –O2 range<RX-622310-AB＊＊＊>
・The oxidation and reduction zones can be managed by a single unit.
・For the oxidation zone, the excess oxygen concentration is displayed (+O2)
・For the reduction zone, the shortage oxygen concentration necessary to fire noncombustion gases (CO,H2) is displayed (–O2).
・ Use –O2 analysis in the presence of H2O or in the range of CO2+H2O>CO+H2.

1

Operating Principles of the Zirconia Type Oxygen Analyzer(1) Configuration and Functions (See diagram at right.)
Heater:Heats the sensor to approximately 800℃.
Sensing cell:
Sets the oxygen concentration of the reference oxygen
chamber to 100%, and measures the oxygen
concentration of the gas detection chamber.
(See below for detailed principles.)Pumping cell:
Sets the oxygen concentration of the gas detection
chamber to 0%.
(See below for detailed principles.)Gas detection chamber:
Inducts gas through the gas diffusion holes.
Reference oxygen chamber: The oxygen concentration is set at approximately
100% by the reference oxygen microcurrent.
(2) Detection characteristics resulting from high temperature heating of the sensor:
When a gas with a different oxygen concentration is put between the electrodes,
oxygen ion conductivity occurs and electromotive force is generated. (Oxygen
concentration cell effect)
When current is applied between the electrodes, oxygen ions flow in the opposite
directioninproportiontothecurrent.
(Oxygenpumping
effect)The sensing cell uses characteristics
andabove, and the pumping cell uses
characteristic above.
(3) Sensing Cell Principles
Minute current flows between the electrodes of the sensing cell. When current isapplied between the electrodes, the oxygen inside the gas detection chamber istransferred to the reference oxygen chamber so that the oxygen concentration in thereference oxygen chamber is approximately 100%.
Note: The quantity of oxygen transferred from the gas detection chamber to thereference oxygen chamber is extremely small, so it does not affect the oxygen
concentration in the gas detection chamber.
The electromotive force in the following equation is generated between theelectrodes of the sensing cell by the difference between the oxygen concentration in
the gas detection chamber and the reference oxygen chamber.
The sensing cell measures the electromotive force generated between its electrodes
and sends signals to the pumping cell so that the electromotive force reaches 450
mV (oxygen concentration of 0% in the gas detection chamber).
Electromotive force

E = －53.2 X log 10

oxygen concentration in gas detection chamber
oxygen concentration in reference oxygen chamber (100)450 = －53.2 X log10

X100

X = approx. 0.003 ppm ≒ 0%2

(4) Pumping Cell Principle
The pumping cell receives the signal from the sensing cell and applies current to theelectrodes so that the oxygen concentration in the gas detection chamber reaches 0%.
The current applied and the oxygen concentration in the sample gas are proportional, so bymeasuring the current the oxygen concentration in the sample gas can be measured.

Pumping current(mA)

Sensor Element Construction

HeaterExhaust gas O2 concentration (%)

SensorHeater temperature
control

HeaterPumping cell
Pumping current
Gas

Gas

Gas detection
chamber

Outputsignal
Pumping
current
controller

Sensing cellGas diffusion
holes
Reference oxygen chamber

Microcurrent togenerate
reference oxygen

Reference voltage(450 mV)(5) Point of measurement of reduction zone
For the reduction zone, H2O in the measuring gas is electrolyzed and oxygen is added to
makethe concentration of the reduction gas (H2, CO) in the gas detection chamber to 0%.
(The direction of O2 ion and electric current is contrary to that for oxidation.)
During the process, the supplied oxygen is in proportion to the reduction gas concentration in
the exhaust gas ; therefore by measuring electric current , the reduction gas concentration in
the exhaust gas can be measured.

3

1-4 Name of each part(1)DTF-201R receiver of oxygen analyzer

No.

Name (function)①

POWER lamp (Lit after the power is turned on.)②

Display 1 (5 digits, for display of concentration, data and error)③

Display 2 (3 digits, for display of range, concentration alarm and channel)④% range lamp (Lit in % measurement mode.)⑤

ppm range lamp (Lit in ppm measurement mode.)⑥

Key (for calibration and data setting)⑦

Installation fitting (for fixing the panel)⑧

Connector 1 (for RS232C connection; option)⑨

Terminal block (for connecting the sensor unit, input/output wiring)42. Unpacking
2-1 Check of delivered product and accessories
Part name
Receiver of oxygen analyzer
Installation fitting

Part No.

Q'ty

RX-622310-AA＊＊＊＊
RX-622310-AB＊＊＊＊
CA-1

1
2

Remarks

For the +O2 range
For the –O2 range
Accessory

NOTE)＊refer to your specifications document. The probe, sensor, relay cables, and other are
different depending on the specifications; check those parts off against the specifications
document.

2-2 Temporary storage of product
When storing the product temporarily before installation, take care of the following points.
・ Place Styrofoam around the product in the box when storing it.
・ Avoid direct sunshine as a storage location.
・ Store at a place with an ambient temperature from -10 to 50 ℃ with as little temperaturefluctuation as possible.
・ Store at a place with a low humidity and less dust.
・ Store at a place free from rain water.
・ Store at a place with less mechanical vibration.
・ Store at a place with less corrosive or other danger gases.

3. Installation
3-1 Installation conditions
Take the following conditions into consideration for the determination of the installationsite for safe and correct operation of the device, and choose the best location for
installation. The analyzer must be installed indoors.
・ Place with less vibration
・ Place where corrosive gases (F, HF, CL2, HCL, SO2, H2S, etc.) does not corrode thedevice or give ill effects on the maintenance personnel
・ Place free from condensation caused by rapid temperature changes
・ Place free from direct radiation of heat・ Place with less effect of electric noise・ Place at low humidity or less dust
・ Place with ambient temperature from 0 to 50 ℃

5

3-2 Installation method
Cautionary items for installation
・ This analyzer is a precision device. Avoid excessive impact or load during installation.
・ Its terminal block and connector jut out from the panel, so they are easily damaged.
Take care not to knock them during installation.

3-3 Piping and wiring method(1) Piping methods
Piping between the probe generator (sensor) and the air selector unit (for supplying
calibration gas) must be connected.
Pipes consist of the following:・Calibration gas pipe
・Ejector air pipe・Purge air pipe
And others
Details differ depending on the specifications. Refer to your specifications document.
(2) Wiring methodsa) Wiring between the probe generator (sensor) and analyzer

Connect the sensor and analyzer with the special relay cable.

pin no.

Relay cable
mark band no.

Analyzer
terminal
signal name

1
2
3
4
5
6
7
8
-

1
2
3
4
5
6
7
8
E

Vs+
VsIp+
IpH+
HS+
SFG

Metal connector

Description

Sensing cell output voltage
Pumping cell output current
Heater voltage(Four-terminal wiring)
Terminal for grounding

Match the mark band no. of the relay cable with the analyzer terminal signal name.

6b) Wiring between the analyzer and instrument room

Power switch

CAUTION・ Install the power source outside as the receiver has no power switch.
・ For the OUT1 terminal, 4-20mA only.
・ For the OUT2 terminal, select from 0-1VDC, 0-5V, 0-10V.
・ The ALM terminal is an open collector type contact. (ON when abnormal) (Factory setting)・ Since the OUT1, OUT2, and ALM terminals share a common grounding wire inside theoxygen analyzer, be sure to ground it externally to one point and not two points.
・ The FG terminal is connected to the grounding wire of the switching power source circuitof the case and inside the oxygen analyzer. When the power source has excessive
line noise, connect a class D grounding to the FG terminal.

7

4. Operation
4-1 Preparation for operation
Before turning ON the analyzer, check the following once again.

Start of initialinspection

Power cordconnected？

NO

Connect it.

YES

Relay cableconnected?

NO

Connect it.

YES

Recorderconnected?

NO

YES
End of initialinspection

8

Connect it.

4-2 Starting
The basic starting operation is described below.
O2 ANALYZER

Display 1

O2
Vol
％
POWER

Start-up operation

ppm
RANGE

Display 2

ENT

Turn ON the power
Supply for the reciver① After the power to the receiver is turned on, the POWER
LED lights up and display 1 starts to count down and,after three minutes, the system is ready for measurement.
Display 1 shows the decreasing count.
3.00 -> 2.59 -> ... -> 0.01 -> 0.00 -> Display ofconcentration

Check/change
Output range

Install the power source outside as the receiver has no
power switch.
② The output range number is displayed at display 2.
Under selection of No. 1 range:

1

Under selection of No. 2 range:

2

Under selection of No. 3 range:

3

Under selection of No. 4 range:

4

The range checking and switching method is controlled
by the receiver setting data (CH030 to 037).
When a concentration alarm is issued, the range number
is not displayed but "AH" (concentration high) or "AL"(concentration low) is displayed.
Refer to (2) "Output range switching" in section 4-4
Gas calibration"Operation to be made during operation" on page 14.
③ Refer to (3) "Gas calibration" in section 4-4 "Operation to
be made during operation" on page 15.

Measurement94-3 Stopping
Stop Procedure

The power supply to the receiver is turned off.

Turn OFF the power
supply for the receiver

Install the power source outside as the receiver has no
power switch.

Do not turn the power off for a short-period stop (within one week).
To stop for a long time, wait until the sample gas becomes the air atmosphere before
turning the power off so that the suction pump being turned OFF or sample gas does notflow out by shutting the source valve.

4-4 Operation to be made during operation(1) Key operation method
Key operation is necessary to change the range during start-up or when performing gas
calibration. This is a very important operation. Read without fail.
As the oxygen analyzer output may change by key operation, be sure to make key
operation after performing the control exclusion when output signal of the oxygen
analyzer
Description of key
key … Press the key to change from the oxygen concentration display mode to
the data setting mode, or to shift the digit place in the setting data to theleft. The digit place which can be changed blinks.
key … Press the key to change the setting CH or setting data value.
key … Press the key in the following cases.
To place a decimal point at the blinking digit place.
To change the plus/minus sign of the setting data.
To return from the data setting mode to the oxygen concentration display
mode.
To clear an error upon occurrence of an error.
ENT

key … Press the key to store data in the memory of the receiver after thesetting CH or setting data value has been changed.
O2 ANALYZER
O2
Vol
％
POWER

ppm
RANGE

ENT

Key

10

Description of key operation
Display 1O2 ANALYZER
LED
1

LED
2

LED
3

LED
4

O2
Vol

LED
5

％
LED
6

POWER

LED
7

LED
8

ppm
RANGE

Display 2

Key Operation Method
ENT

Key

During measurement

Display 1 shows the oxygen concentration.
Display 2 shows the range or a concentration alarm display.
① First, press the

Press

key.

Display 2 shows the CH number and LED8 blinks.
Display 1 shows data.
Press

or

② Pressorto display the desired CH number

on the display 2.
Press

ENT

ENT

③ Press.

LED5 of display 1 blinks.
Display 2 remains showing the CH number.
Press

or

④ Pressor

to change the data shown at

display 1.
Press

ENT

⑤ Press

ENT

to store the data in the memory of thereceiver.
Press⑥ Press
During measurement

to return to the oxygen concentration display

screen.
Key operation is complete.
Operation steps ① through ⑥ can be used for range change,gas calibration and so on.
A list of system data in each CH is shown on the next page.

11

System data list
CH No.

Description

Setting data000

Display selection

0: No display (－ － ― ―)1: Oxygenconcentration

001

Sensor output VS monitor (mV)－002

Sensor output IP1 monitor (mA)－003

Sensor output IP2 monitor (A)－004

Sensor output VP monitor (V)－005

Sensor heater voltage monitor (V)－006

Sensor heater current monitor (A)－007

Sensor heater current monitor (A)－Initial data
1

Monitor value008
toData for setting and checking by
manufacturer

015
016

Primary delay time (sec)

0 to 990

1: No. 1 range
2: No. 2 range
3: No. 3 range
4: No. 4 range

1

1

017
to

Data for setting and checking by
manufacturer

019
020

Output range switching021
toData for setting and checking by
manufacturer

022
023

Output hold setting

0: No hold
1: Arbitrary value
2: Value 5 seconds prior to
occurrence of error

024

Output hold value setting (%FS)

0 to 100

0025

Data for setting and checking by
manufacturer

026

Auto range setting

0: Not used
1: Used

0027

OUT1 output adjustment

028
029

－

OUT2 output adjustment

This CH is used for zero andspan adjustment of output.

－

－

－

12

－

CH No.
030
031

Description

Setting data

Output range No. 1 span value

Initial data25

1 to 99999

Output range No. 2 span value* Check the unit of the output
range at CH034 through 037.

10

032

Output range No. 3 span value

5033

Output range No. 4 span value

034

Output range No. 1 unit

035

Output range No. 2 unit

036

Output range No. 3 unit

037

Output range No. 4 unit

038

－

－

－

039

－

－

－

0
0: Not used
1: ppm
2: %

2
2
2
0

040
to

Data for setting and checking by
manufacturer

119
120

Zero gas concentration (%)

121

Span gas concentration (%)

122-Span gas concentration (%)-99.90 to 99.90

123

Air point concentration

0.00 to 99.90

0.00 to 99.90
See inspection
data

124
to

Data for setting and checking by
manufacturer

142
143

Linearization table

Specific values for each sensor

See inspection
data

144
to

Data for setting and checking by
manufacturer

179
180

Calibration point selection

181

Calibration start

5: Zero point
6: Span point
7: -Span point
8: Air point
0: OFF
1: Calibration start

8

0

182
to

Data for setting and checking by
manufacturer

189
190

Heater control mode

0: Heater off
1: Constant voltage control
2: Constant resistance control 1
3: Constant resistance control 2

191

Heater voltage setting value (V)5.00 to 11.00

10.50 (Cannot bechanged)

192

Heaterresistancetemperature (Ω)

Value characteristic to sensor

See inspection
data

at

room

193
to

Data for setting and checking by
manufacturer

199

13

Data for setting by
manufacturer

CH No.

200

Description

Setting data

Contact output ALM content setting

Initial data

0: No contact output
1: Analyzer error
4: READY
5: Upper concentration limit alarm
6: Lower concentration limit alarm

1

201
to

Data for setting and checking by
manufacturer

203
204

Contactsetting

outputALM

operation

0: NO
1: NC

0

205
to

Data for setting and checking by
manufacturer

219
220

Upper concentration alarm setting

0.0 to 9999.0

25

221

Lower concentration alarm setting

0.0 to 9999.00222

Upper concentration alarm unit

0223

Lower concentration alarm unit

0: Not used
1: ppm
2: %

0

224
to

Data for setting and checking by
manufacturer

309
310

Passwordfor
modificationdata

setting

0: Data protected201: Data modification enabled

201

Cautionary items for data setting modification
Do not change CH190 through 192 because otherwise the heater voltage supplied tothe sensor is changed to cause breakage of the sensor.
But, when the sensor is replaced, it is necessary to enter CH192. (refer to section 44(4).)(2) Output range switch(Range selection by key operation)
Output range 1 through 4 can be changed at CH020. Enter "1" to select range 1, enter"2" to select range 2, or enter a number corresponding to the range number. When thehigh or low concentration alarm is not displayed at display 2, the currently selected
range is shown at display 2.
Check the output range setting according to the procedure described at (6 Output range
setting in section 4-6 "Application operations" on page 19.

14

(3) Gas calibration
This analyzer can be used with air 1 point calibration. It doesn’t need to carry out calibration②,③,④,⑤ standardly.
① Air 1 point calibration(a) Send the Air to the Probe transmitter (sensor unit) at 1-3L/min ,and it stabilizes
indication.
(b) Input 0 to CH276 to set the calibration mode to air 1 point calibration.
(c) Input the Air point concentration to CH123. 20.6% is inputted when theatmosphere air is used 20.9% when the instrument air is used for calibration.
(d) Input 8 to CH180 to set the calibration point to air point.
(e) Input 1 to CH181 to start calibration.
This procedure performs calibration. As long as the setting data is not changed,
steps (b) ,(c)and (d) are not required.
② Air, Zero 2 point calibration
This analyzer doesn’t need to carry out zero point calibration standardly. How tozero point (0.0%O2point) calibration is shown in the following for the reference.
(a) Input 1 to CH276 to set the calibration mode to air and zero 2 point calibration.
(b) Send the Air to the Probe transmitter (sensor unit) at 1-3L/min ,and it stabilizes
indication. Air point is calibrated in a method to show in (c)-(e) of ①.
(c) Input 0.0 to CH120 for zero gas concentration. Zero gas is to use 10%CO2/N2
gas or 100%N2 gas.
Combustibility gas such as CO and H2 isn’t to be contained in zero gas.
(d) Send the zero gas to the Probe transmitter (sensor unit) at 1-3L/min ,and it
stabilizes indication.
(e) Input 5 to CH180 to set calibration point to zero point.
(f)

Input 1 to CH181 to start calibration.
This procedure performs calibration. As long as the setting data is notchanged, steps (a)and (c) are not required.

15

③ Air, Span 2 point calibration(a) Input 2 to CH276 to set the calibration mode to air and span 2 point calibration.
(b) Send the Air to the Probe transmitter (sensor unit) at 1-3L/min ,and it stabilizes
indication. Air point is calibrated in a method to show in (c)-(e) of ①.
(c)

Input to CH121 for span gas concentration. The concentration of span gas is to
use the gas of the 90% in F.S. range.

(d) Send the span gas to the Probe transmitter (sensor unit) at 1-3L/min ,and it
stabilizes indication.
(e) Input 6 to CH180 to set calibration point to span point.
(f)

Input 1 to CH181 to start calibration.
This procedure performs calibration. As long as the setting data is notchanged, steps (a)and (c) are not required. Input the concentration after thechange by the operation of (c) when you change the concentration of span gas.

④ Air, Zero, Span 3 point calibration(a) Input 3 to CH276 to set the calibration mode to air, zero and span 3 pointcalibration.
(b) Send the Air to the Probe transmitter (sensor unit) at 1-3L/min ,and it stabilizes
indication. Air point is calibrated in a method to show in (c)-(e) of ①.
(c) Input 0.0 to CH120 for zero gas concentration. Zero gas is to use 10%CO2/N2
gas or 100%N2 gas.

Combustibility gas such as CO and H2 isn’t to be contained in zero gas.
(d) Send the zero gas to the Probe transmitter (sensor unit) at 1-3L/min ,and it
stabilizes indication. Zero point is calibrated in a method to show in (e),(f) of ②.
(e) Input to CH121 for span gas concentration. The concentration of span gas is
touse the gas of the 90% in F.S. range.
(f)Send the span gas to the Probe transmitter (sensor unit) at 1-3L/min ,and it
stabilizes indication. Span point is calibrated in a method to show in (e),(f) of ③.
This procedure performs calibration. As long as the setting data is not changed,
steps (a), (c) and (e) are not required. Input the concentration after the changeby the operation of (c) when you change the concentration of span gas.

16

⑤ Air, －Span 2 point calibration (Only for the –O2 range)(a) Input 2 to CH276 to set the calibration mode to air and span 2 point calibration.
(b) Send the Air to the Probe transmitter (sensor unit) at 1-3L/min ,and it stabilizes
indication. Air point is calibrated in a method to show in (c)-(e) of ①.
(c)

Input to CH122 for span gas concentration. The recommended span gas torefer to the following notes.

(d) Send the span gas to the Probe transmitter (sensor unit) at 1-3L/min ,and it
stabilizes indication.
(e) Input 7 to CH180 to set calibration point to －span point.
(f)

Input 1 to CH181 to start calibration.
This procedure performs calibration. As long as the setting data is not changed,
steps (a)and (c) are not required. Input the concentration after the change by
the operation of (c) when you change the concentration of span gas.

CAUTION・When the flow of calibration gas, be sure to bubbling water.
・Recommended calibration gas concentration of －span point
CO＝9%, H2＝7%, CO2＝7%/N2 Bal
calibration gas ＝– (CO+H2/2)= –((9+7)/2)= –8
・In view of the bubbling water, －span gas concentration is －7.8%.
⇒Input －7.8 to CH122
・Be careful when exhaust the calibration gas.

(4) Setting of linearization table and heater resistance at room temperature
When changing the sensor, the linearization table (CH143) and the room temperature
heater resistance (CH192) must be entered. Refer to the test data of the sensor for
linearization table and the room temperature heater resistance.

(5) Concentration alarm setting
Set the high concentration alarm at CH220 and set the unit of the setting at CH222.
Set the low concentration alarm at CH221 and set the unit of the setting at CH223.
As a setting of the unit, enter "0" when the unit is not used, enter "1" for ppm, or "2"
for %.

17

4-5 Operation to be made upon occurrence of an error
When an error occurs, display 1 shows the error code or concentration display does notshow a correct value. In such a case, take a remedy referring to section 5-2"Troubleshooting" on page 22. After removing the error, press the

key or reset thepower supply to return to the measuring state by turning the supply power to the receiverOFF(power reset).

4-6 Application operations(1) Primary delay time setting
A primary delay time can be set to the concentration output signal using the CH016 data
(unit: second). The setting range is 0 to 99 seconds.
(2) Output hold setting
The concentration output signal holding pattern upon an error occurring to the sensor or
receiver can be set at CH023. The relationship between the entered data and theholding pattern is described in the table below.
Entered data

Holding pattern0

No output hold upon sensor or receiver error

1

The output is held at the value set at CH024 upon asensor or receiver error.

2

The output is held at the value five seconds prior to theoccurrence of the error upon a sensor or receiver error.

(3) Output hold value setting
In a warming-up interval (when the receiver counts down) or with "1" set at CH023, theconcentration output signal is held to the CH024 data (unit: FS) when an error occurs to
the sensor or receiver. The setting range is 0 to 100% FS. For example, if you want to 4
to 20 mA output of OUT 2 to hold at 12 V, set FS to 50%.

18

(4) OUT1 (current) output adjustment① Connect an ammeter or the like which can check the output, to the OUT1+, OUT 1terminal at the terminal block of the receiver.
② Call up CH027. Display 1 shows "cAL 1."③ Press the

ENTkey. Display 1 shows "0." Each time thekey is pressed, display

1 shows "0" and "100" alternately.
When "0" is shown, the output zero point can be adjusted, and when "100" is shown,the output span point can be adjusted, in the following procedure.
④ When display 1 shows "0" or "100," press theor press the

key to roughly adjust the output,

key to finely adjust the output. Make adjustment while observing

the output at the ammeter or the like.
⑤ After finishing adjustment of the zero point and span point at step 4, press the

ENT

key to return to the CH setting mode.
(5) OUT2 (voltage) output adjustment① Connect a voltmeter or the like which can check the output, to the OUT2+, 2- terminalat the terminal block of the receiver.
② Call up CH028. Display 1 shows "cAL 2."③ Press the

ENTkey. Display 1 shows "0." Each time thekey is pressed, display

1 shows "0" and "100" alternately.
When "0" is shown, the output zero point can be adjusted, and when "100" is shown,the output span point can be adjusted, in the following procedure.
④ When display 1 shows "0" or "100," press theor press the

key to roughly adjust the output,

key to finely adjust the output. Make adjustment while observing

the output at the voltmeter or the like.
⑤ After finishing adjustment of the zero point and span point at step 4, press the

ENT

key to return to the CH setting mode.
(6) Output range setting
Up to four output ranges can be set with CH030 to 033 for the range span value andwith CH034 to 037 for the unit.
Output range No. 1: CH030 for range span value setting and CH034 for unit setting
Output range No. 2: CH031 for range span value setting and CH035 for unit setting
Output range No. 3: CH032 for range span value setting and CH036 for unit setting
Output range No. 4: CH033 for range span value setting and CH037 for unit settingEnter "0" for the unit setting when the unit is not used, or enter "1" for ppm, or "2" for %.
－ Example －To set output range No. 1 at 0 to 10 ppm, enter "10" to CH030 and enter "1" to CH035.
After the output range setting has been changed, calibration using the calibration
gas corresponding to the range become necessary.
19(7) Contact output setting
Set the contact output content at CH200, and set the contact output mode setting at
CH204.
Enter "0" for normally open (NO) mode setting, or enter "1" for normally closed (NC)mode setting. Refer to the table below for the contact mode according to the contact
output content and NO/NC setting.
Input dataof CH 2000Contact output mode, input
data of CH 204

Contact output content
No contact output

0 (NO)

1 (NC)

OFF

ON

OFF
During warming-up or measurement
1(Factorysetting)

Analyzer error

4

READY

5

Upper
concentration
limit alarm

6

Low
concentration
limit alarm

ON

ON
Upon analyzer error(Factorysetting)OFF

During warming-up

ON

OFF

After warming-up

OFF

ON

During warming-up

OFF

ON

Upon concentration higher than setting

ON

OFF

Upon concentration lower than setting

OFF

ON

During warming-up

OFF

ON

Upon concentration higher than setting

OFF

ON

Upon concentration lower than setting

ON

OFF

Example of wiring circuit to ALM.

＋
ALM

(Factorysetting)

R1

DC25V 50mA or less－
R1
DC or AC

Warning lamp，etc

20

(8) RS232C Communication function setting
The measurement status, error codes, range and measurement values can betransmitted.
The formats include condition = measurement status (6 bytes), E = error code (2 bytes),
RANGE = range No. (1 byte), ppm = measured value (maximum 11 bytes), CR + LF.
The communication specifications (bit rate, data length, parity check, stop bit, etc.) are
set by ENERGY SUPPORT CORP..
(9) Data protection password settingEnter "0" to CH310 to protect the setting data against changes. Enter "201" to CH310 toallow data changes.

5. Maintenance
The maintenance and inspection procedures described herein are important for maintenanceof correct functions and accurate measurement. Be familiar with the description of items andmethods and perform without fail.
Sensor replacement cautions
・To prevent gas intoxication or oxygen deficiency, before you replace the sensor,
always stop the supply of sample gas.
・There is a danger of getting burned, so before you replace the sensor, turn off
the power and allow the analyzer to cool down first. If you must work while theanalyzer is still hot, wear heat resistant gloves and work carefully to avoid burns.

5-1 Daily and periodic inspection
Gas calibration

Inspection of Sensor

Interval

At least once in each month (Periodic calibration according
to the operation condition is recommended.)

MethodPerform gas calibration according to (3) in section 4-4.

Interval

1 monthMethodThe amount of drift toward the last time calibration value isconfirmed.
(When it exceeds ±2%F.S./month, it thinks with thedeterioration tendency of the sensor.)

Sensor replacement

Interval

2 years

MethodReplace when replacement of the sensor unit is necessary(refer to section 5-2 "Troubleshooting.") See the manual of
sensor for the replacement method.

21

5-2 Troubleshooting
Phenomenon

Cause
0 is input for CH310.
Unable to change Receiver problem
data.

Countermeasure
Input 201 for CH310.
Request repair by
ENERGY SUPPORT
CORP.
Analyzer error
Turn power OFF, thenoccurring
ON again after 10
seconds. Or pushAnalyzer output,
key to reset.
display value does
not change.
Request repair byReceiver problem
ENERGY SUPPORT
CORP.
Sample gas flow rate is Readjust sample gas
outside range.
flow rate.
Sample gas pipe leakAnalyzer
displayerror

output,value

Pipe leak inside
analyzer
Gas calibration error

Remarks

Take ountermeasuresin accordance witherror code.

Adjustment tospecified flow rate

Check for leaks,
tighten sample gas
pipe joints.
Tighten joints, etc.

Perform gas
calibration
Sensor deterioration
Replace the sensor
Sample gas flow rate is Readjust sample gas
flow rate
Analyzer output, outside range
display value is Flammable gas
Eliminate flammablezero
included in sample gas gas from sample gas
Sensor deterioration
Replace the sensor
Output adjustment is
Perform output
adjustment for CH027,
inaccurate
028
Output range isChange output range
Analyzer output different.
(CH020, 026, 207).
and display value
Check output range
do not matchsetting (CH030 - 037)
and reset.
Receiver problem
Request repair by
ENERGY SUPPORTCORP.
Residual air effectN2 purge of sampling
inside sampling pipe,
pipe, pipes inside
analyzer
analyzer
Sample gas flow rate is Readjust sample gas
insufficient.
flow rate
Slow response
Blockage of sample
Clean pipe or installgas pipe
new pipe
Primary delay time
Check CH016 data, setsetting value is too
it to 0 sec
large (CH016)
Sensor deterioration
Replace the sensor

22

Adjustment tospecified flow rate

Adjustment tospecified flow rate

Error
Code
E-01
E-02
E-03
E-04
E-05
E-06
E-07
E-20
E-08
E-09
E-10
E-11
E-12

Description

Possible cause

ActionAbnormality in ROM,
RAM, and/or EEPROM

Receiver abnormality, or
temporary malfunction
due to external noise

Turn off the power and then, after 10 seconds,
turn it back on.

Heater current excessively
highHeater current excessively
low
Heater voltage excessively
highHeater voltage excessively
low
Heater temperature not highenoughVS voltage excessivelyhighVS voltage excessively low
IP current excessively highIP current excessively low
VP voltage excessively
highSensor heater abnormality
Heater wiring error
Receiver abnormality

Sensor heater abnormality
Heater wiring error
Receiver abnormality

E-13

VP voltage excessively low

E-14

Heater terminals (S+, S-)
not closed

Defective contact inwiring between S+ and S-

E-21

Data out of the specified
range

Data entry error

Sensor abnormality
E-35
～48

Calibration error

E-60

All output ranges are “Notused”.

Range entry error“Not used” range isselected.

Range entry error or range
selection error

E-63

Calibration gas
concentration setting error

Press the DOT
key, or turn off the power
and then, after 10 seconds, turn it back on.
To clear the error display, press the DOT
key after the cause of the error has been
eliminated (e.g. after a sensor has been replaced).
Check the heater resistance (normally about 3Ω).
Check the heater voltage (normally about 10.5V).

Press the DOT
key, or turn off the power andthen, after 10 seconds, turn it back on.
To clear the error display, press the DOT
key after the cause of the error has been
eliminated (e.g. after a sensor has been replaced).
Check the VS voltage (normally about 450 mV).
Check the IP current （normally ±10mA）.
Check the VP voltage (normally ±5V).
Press the DOT
key to clear the error
display.
Check the wiring and return to normal condition.
Press the DOT
key to clear the error
display.
Enter data within the specified range.
Press the DOT
key to clear the error
display.
Make sure that the standard gas concentration
setting value is correct and that the calibration gas
flow rate is normal.
Then perform the calibration again.
Check the IP current with N2 (normally ±0.5mA).
Check the following value.
(IPAir－IPN2／21＝ka)（normally 0.1～0.5）
Press the DOT
key to clear the error
display.
Change any one of the output ranges (No.1～4)
into other than “Not used”.
Press the DOT
key to clear the error
display.

Select a range other than “Not used”.
The O2 analyzer needs to be sent to the maker for repair if all the actions listed above
should fail.

23

6. Reference data
6-1 Standard specification
Model
Measurement principle
Measuring range
OutputRepeatability
Linearity
Response time
Warming-up timeAmbient temperature
Humidity
Power supply
Conditions ofSample gas

DTF-201R
Zirconia limiting current method
RX-622310-AA＊＊＊＊：0～5，0～10，0～25%O2
RX-622310-AB＊＊＊＊：-3～5，-6～10，-15～25%O2
DC4 - 20 mA (non-insulated output, load resistance 600 Ω or less)DC0 - 1 V (non-insulated output, load resistance 100 KΩ or above)±0.5% FS (0 to 10 % range)±1% FS (0 to 10 % range)
10 sec. or less (90% response for calibration gas switching)Approx.3 min
0 - 50℃
90% RH or less※Please check the nameplate exact
AC85 – 132V 50/60Hz
supply voltage
AC170 – 264V 50/60HzO2%-15～25
CO2
%
0～20
H2
%
CO+H2：15% or lessCO%
H2O＞CO+H2 Besides, the thingwhich doesn’t have combustible gas.
It is heated when it has condensation.
H2O
%
SOx
ppm
500 or lessNOx
ppm
500 or lessHClppm
1 or lessNH3
ppm
1 or less
HF
ppm
1 or lessCl2
ppm
1 or less
Others
N2
%
Bal.

24

The contents of this manual are subject to change without notice for improvement.
For inquiries regarding product handling, please contact us or our distributors.
Inquiry form URL：https://www.energys.co.jp/english/inq/all.php
ENERGY SUPPORT CORPORATION
1, Aza Kamikobarii, Inuyama, Aichi 484-8505 Japan