Manual No.3156E R6Operation Manual for
DTF-201
Oxygen Analyzer(% Range)

RX-62230＊-A＊＊＊＊＊

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.
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. 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.
3. 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.
4. 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.
5. 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.

Table of Contents
1. Introduction----------------------------------------------------------------------------------------------------------------- 1
1-1 Introduction -------------------------------------------------------------------------------------------------------- 1
1-2 Usage Caution Notices ----------------------------------------------------------------------------------------- 1
1-3 Product Outline --------------------------------------------------------------------------------------------------- 1
1-4 Name of each part ----------------------------------------------------------------------------------------------- 4
2. Opening the Packaging ------------------------------------------------------------------------------------------------- 5
2-1 Checking the Components and Accessories ------------------------------------------------------------- 5
2-2 Temporary Product Storage ---------------------------------------------------------------------------------- 5
3. Installation ------------------------------------------------------------------------------------------------------------------ 5
3-1 Installation Conditions ------------------------------------------------------------------------------------------ 5
3-2 Installation Method ---------------------------------------------------------------------------------------------- 6
3-3 Piping and Wiring Methods------------------------------------------------------------------------------------ 6
4. Operation ------------------------------------------------------------------------------------------------------------------- 8
4-1 Operation Preparation ------------------------------------------------------------------------------------------ 8
4-2 Start-up ------------------------------------------------------------------------------------------------------------- 9
4-3 Stop Procedure ------------------------------------------------------------------------------------------------- 10
4-4 Procedure During Operataio -------------------------------------------------------------------------------- 10
4-5 Operation for when an Error Occurs ---------------------------------------------------------------------- 18
4-6 Applied Operations -------------------------------------------------------------------------------------------- 19
5. Maintenance ------------------------------------------------------------------------------------------------------------- 22
5-1 Daily and Periodic Inspection ------------------------------------------------------------------------------- 22
5-2 Troubleshooting ------------------------------------------------------------------------------------------------ 23
6. Reference Material ----------------------------------------------------------------------------------------------------- 25
6-1 Standard Specifications -------------------------------------------------------------------------------------- 25
6-2 Drawing name: DTF-201 oxygen analyzer receiver -------------------------------------------------- 26

1. Introduction
1-1 Introduction
The DTF-201 Oxygen Analyzer is a product of the latest ceramics production technology,
using a thick film sensor and digital signal processing technology. This Operation Manualexplains how to operate the DTF-201 oxygen analyzer.
Please read this manual thoroughly to ensure long, successful operation of your Oxygen
Analyzer.

1-2 Usage Caution Notices
・ Do not install the analyzer in a location subjected to vibration.
・ Do not apply water or volatile fluids to the analyzer.
・ Do not use sample gas containing corrosive gases (F, HF, CL2, HCL, SO2, H2S, etc.)
or poisonous materials (Si, Pb, P, Zn, Sn, As, etc.). These can shorten the life of thesensor.
・ Do not use sample gas containing inflammable gas. The inclusion of inflammable gas
can cause deviation in the oxygen concentration measurement value.
・ The major usage of this oxygen analyzer is for atmospheric oxygen measurement atboiler, Heating furnace.
・

1-3 Product Outline
The DTF-201 oxygen analyzer has the following features.
・ With one calibration of the air sample point is possible.
・ Compact size.(Small installation space.)・ Easy maintenance.
・ Low power consumption by the sensor.(About 13 W for normal use.)
・ Short warm up time.
・ No power switch.

1

Operating Principles of 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
direction in proportion to the current. (Oxygen pumping effect)
The sensing cell uses characteristics and above, 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

3

Microcurrent togenerate
reference oxygen

Reference voltage(450 mV)

1-4 Name of each part(1)DTF-201 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 connecting the sensor unit)⑨

Connector 2 (for RS232C connection; option)⑩

Terminal block (for input/output wiring)42. Unpacking
2-1 Checking the Components and Accessories
Part name

Part No.

Q'ty

Oxygen analyzer

RX-62230＊-A＊

1

Installation fitting

CA-1

2

Remarks
RX-622300:AC100-240V
RX-622303:DC24V
Accessory

NOTE)※refer to your specifications document. The probe, sensor, relay cables, and others aredifferent depending on the specifications; check those parts off against the specifications
document.

2-2 Temporary Product Storage
When storing the product temporarily prior to installation, observe the following conditions.
・ It is preferable to store the product inside a box, protected by polystyrene, etc.
Store the product in a location with the following features:
・ Away from direct sunlight.
・ The ambient temperature is between -10℃ and 50 ℃, with little variation in temperature.
・ There is little humidity and dust.
・ The location is not exposed rainfall.
・ There is little mechanical vibration.
・ There are no corrosive gases or dangerous gases.

3. Installation
3-1 Installation Conditions
This oxygen analyzer must be installed indoors. For safe, correct use of your oxygen
analyzer, install the analyzer in a location with the following conditions to provide the best
possible installation conditions.
・ There is little vibration.
・ It is not affected by corrosive gases (F, HF, CL2, HCL, SO2, H2S, etc.), and will notinterfere with maintenance personnel.
・ Condensation is not caused by sudden temperature fluctuations.
・ It is not affected by direct heat radiation.
・ It is affected little by noise.
・ There is little humidity and dust.
・ The ambient temperature is between 0℃ and 50℃. (not exposed to direct sunlight)

53-2 Installation Method
Installation Cautions
・ This oxygen analyzer is a precision instrument. When installing it, avoid large shocks
and applying a load upon it.
・ 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 Methods(1) Piping Arrangement
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 Methods①Wiring between the probe generator (sensor) and analyzer
Connect the sensor and analyzer with the special relay cable.
Details differ depending on the specifications. Refer to your specifications document.

6

② Wiring to receiver
Connect wiring to the receiver at the terminal block (M3 screws). Take care of thepolarity when wiring.
Layout of terminal block and description
IN1

IN2
OUT1
＋

IN3
OUT1
－

COM1
OUT2
＋

RY1

OUT2
－

RY2
FG

RY3

POWER

RY4

POWER

COM2
E

IN1

:NO-voltage contact input terminal 1

IN2:NO-voltage contact input terminal 2

IN3:NO-voltage contact input terminal 3

COM1:Common terminal for IN1 through 3

RY1:Open co output terminal 1 (permissible rating DC25V, max.50 mA)

RY2:Open co output terminal 2 (permissible rating DC25V, max.50 mA)

RY3:Open co output terminal 3 (permissible rating DC25V, max.50 mA)

RY4:Open co output terminal 4 (permissible rating DC25V, max.50 mA)

COM2:Common terminal for RY1 through 4

OUT1+,-:4 to 20 ma DC output of oxygen concentration (corresponding to selected
range). Non-insulated output, load resistance 600 Ω or less

OUT2+,-:0 to 5 VDC output of oxygen concentration (corresponding to selected
range). Non-insulated output, load resistance 10 KΩ or above

FG:Terminal for connecting shields of OUT1 and 2

POWER:Power terminal (85 to 132 VAC, 50/60 Hz, max.50 VA)

E:Grounding terminal※1 IN1-3, RY1-4, and OUT2 are different depending on the specifications; check thoseparts off against the specifications document.
※2 OUT2 is either one of DC 0-1 V, DC 0-5 V, DC 0-10 V. Refer to your specifications
document.
※3 POWER is either one of AC 100-240 V, DC 24 V. Refer to yourspecifications document.
Example of Wiring Circuit to RY

RY
DC25V
50mA以下DC 25 V,50mA or less

R1
COM2
R1
DC or AC

Error lamp
異常ランプ等7

4. Operation
4-1 Operation Preparation
Before you turn the power ON, perform the following inspection.

Start pre-operation
inspection

NO

Is the power cordconnected properly?

Connect it.

YES

NO

Is the connecting cableconnected properly?

Connect it.

YES

Is the analyzer
input/output wiring
connected properly?

NO

YES
pre-operation
inspection
completed8Connect it.

4-2 Start-up
Perform the basic start-up operation as follows.
O2 ANALYZER

Display 1

O2
Vol
％
POWER

Start-up operation

ppm
RANGE

Display 2

ENT

Turn power ON.

① When you turn ON the power to the analyzer, the
POWER LED lights up and Display 1 starts thecountdown. After 3 minutes, measurement can start.
Display 1 displays the countdown as follows.
3.00 -> 2.59 -> ... -> 0.01 -> 0.00 ->Concentration display

Check/change
Output range.

The analyzer does not have a power switch, so provide
one externally.
② Display 2 displays the output range No.
When range No. 1 is selected: 1
When range No. 2 is selected: 2
When range No. 3 is selected: 3
When range No. 4 is selected: 4
Checking and changing of each range is performed using
the receiver setting data (CH030 - 037).
If the concentration warning is output, the range No. is
not displayed, and AH (concentration high) or AL(concentration low) is displayed.
For details, see page 16, 4-4 Procedure During
Operation, (2) Output Range Switching.

Gas calibration③ For gas calibration, see page 16, 4-4 Procedure During
Operation, (4) Gas Calibration.
Measurement94-3 Stop Procedure
Stop Procedure
Turn OFF the power supply to the oxygen analyzer.

Turn OFF the power

There is no power switch on the analyzer, so turn off theexternal power supply.

If operation is stopped for a short period such as 1 week or less, do not turn off the power.
If operation is stopped for a longer period, once the sample gas is replaced by ambient air,then turn off the power.

4-4 Procedure During Operation(1) Key Operation Method
Key operation is required to change the range and perform gas calibration when starting
up. This operation is very important, so be sure to read these instructions.
Key operation may change the oxygen analyzer output, so when using the oxygen
analyzer output signals for control purposes, always apply the control release device
before operating the keys.
Key Functions
key … Press this key to shift from the O2 Concentration display to the datasetting mode, or to move toward the left digit of the setting data. The
currently changeable digit flickers.
key … Press this key to change the value of the set CH and the set data.
key … Press this key in the following cases.
*To insert a decimal point after the flickering digit.
*To switch to the opposite sign when the set data has a plus or minus sign.
*To return to the O2 Concentration display mode from the setting mode
*To clear an error when it has occurred.
ENT

key … Press this key to save data in the receiver memory after changing thevalue of the set CH or set data.
O2 ANALYZER
O2
Vol
％
POWER

ppm
RANGE

ENT

Key

10

Key Operation Method
Display 1O2 ANALYZER
LED
1

LED
2

LED
3

LED
4

O2
Vol

LED
5

％
LED LED LED
6
7
8

POWER

ppm
RANGE

Display 2

Key Operation Method
ENT

Keys

During measurement

Display 1 is the O2 Concentration display.
Display 2 is the Range or Concentration warning display.
① First, press the

Press

key.

Display 2 will display the CH No. and LED 8 will flicker.
Display 1 display the data.
Press

or

② Pressorto set the CH No. of the data you

wish to display on Display 2.
Press

ENT

③ Press

ENT.

LED5 on Display 1 will flicker.
Display 2 will continue to display the CH No.
Press

or

④ Pressor

to change the data displayed on

Display 1.
Press

ENT

⑤ Press

Press

ENT

⑥ Press

to save the data in the receiver memory.
to return to the O2 Concentration display.

Key operation is finished.
During measurement

Using steps ① - ⑥ above, you can change the range andperform gas calibration.
The following page displays the System Data Table
explaining which data is input to which CH.

11

System data TableCH No.

Function

Setting Data

Default Data

0: No display (－ － ― ―)1: Oxygen concentration
2: Icp
3: Vs
4: Ip1*2 – 9 are for
5: Ip2checking use
6: Vp
by we.
7: Vh
8: Ih
9: CPU Ih

1000

Display selection

001

Sensor output VS monitor (V)－002

Sensor output IP monitor (A)－003

Sensor output IP 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)－Monitor value

008｜

Data for setting, checking by
ENERGY SUPPORT CORP.

015
016

Primary delay time (sec)017

Data for setting, checking by
ENERGY SUPPORT CORP.

018

WET/DRY operation0 – 990

0: WETSee

1: DRY(gas fuel)2: DRY(solid and liquid fuel)Specifications
Manual.

019
020

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

Output range switching

Data is supplied
for the current
selected range

021|

Data for setting, checking
ENERGY SUPPORT CORP.

by

022
023
024

0: No hold
1: Desired value
2: Value 5 sec. before error

Output hold setting
Output hold value setting (%FS)

See
Specifications
Manual.

0 - 100

0

－

－

025
|

Data for setting, checking
ENERGY SUPPORT CORP.

by

026
027

OUT1 output adjustment

028

OUT2 output adjustment

When adjusting output ZERO or
SPAN, sets to this CH.

029

－

－

12

－

CH No.

Description

Setting data

Initial data

030

Output range No. 1 span value

031

Output range No. 2 span value

032

Output range No. 3 span value

033

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

－

－

－

1 - 99999* Check the output range unit
using CH034 - 037.

0: Not in use
1: ppm2: %See
Specifications
Manual.
1
1
2
2

040
|

Data for setting, checking
ENERGY SUPPORT CORP.

by

119
120

Zero gas concentration (%)

121

Span gas concentration (%)

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

123

Air point concentration

0.00 - 99.90

0.00 - 99.90
See inspection
data

125
to

Data for setting, checking
ENERGY SUPPORT CORP.

by

142
143

Linearization table

Specific values for each sensor

See inspection
data

144
|

Data for setting, checking
ENERGY SUPPORT CORP.

by

179
180

Calibration point selection

181

Calibration start

5: Zero point
6: Span point
8: Air point
0: Default value
1: Calibration start

8
0

182
|

Data for setting, checking
ENERGY SUPPORT CORP.

by

189
190

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

Heater control mode

1
(Change notpossible.)
10.50

191

Heater voltage setting value (V)5.00 - 11.00(Change notpossible.)

192

Heaterresistancetemperature (Ω)

193

Resistance ratio

at

room

Specific values for each sensor

See inspection
data

Specific values for each sensor

See inspection
data

194
to

Data for setting, checking
ENERGY SUPPORT CORP.

by

199
13

CH No.

Description

Setting data

200

Contact output RY1 function setting

201

Contact output RY2 function setting

202

Contact output RY3 function setting

203

207

Contact output RY4 function setting
Contact output RY1 movement
setting
Contact output RY2 movement
setting
Contact output RY3 movement
setting
Contact output RY4 movement
setting

208

Contactsetting

input

IN1

movement

209

Contactsetting

input

IN2,3

movement

210
|
219

Data for setting, checking
ENERGY SUPPORT CORP.

204
205
206

222
223

Oxygen min. alarm unit

224

Simulation output selection

221

225
226
227
|
229
230
231
232
233
234
235
236
237
238
239
240
241

OUT1
Current simulation output value
OUT2
Voltage Simulation output value
Data for setting, checking
ENERGY SUPPORT CORP.
Gas fuel CO2 concentration
Gas fuel CO concentration
Gas fuel H2 concentration
Gas fuel CH4 concentration
Gas fuel C2H6 concentration
Gas fuel C3H8 concentration
Gas fuel C4H10 concentration
Gas fuel C5H12 concentration
Gas fuel N2 concentration
Gas fuel H2O concentration
Gas fuel CO2 concentration
Solid and Liquid fuelC concentration

See
Specifications
Manual.

0: NO
1: NC

See
Specifications
Manual.

0: Not in use
1: Air 1 point calibration start
0: Local range switching
1: Remote range switchingSee
Specifications
Manual.

byO2 concentration max. alarm
setting value
O2 concentration min. alarm setting
value
Oxygen max. alarm unit

220

Initial data

0: No contact output
1: Analyzer error
2: Range echo (2 range
discrimination)
3: Range echo (discrimination of 3
ranges or more))
4: READY
5: Concentration max. alarm
6: Concentration min. alarm
7: Range echo (3 contacts)

0.0 - 9990.0
0.0 - 9990.0
0: Not used
1: ppm
2: %0: Measurement value output
1: Simulation output

If 5 and 6 are set
for CH200 –
203, set yourdesired limit

0

0.0 – 100.0

0.0

0.0 – 100.0

0.0

by
0.00

0.00 – 100.00

0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00

14

CH No.

Description

Setting data

Initial data

242

Solid and Liquid fuelH concentration

0.00

243

Solid and Liquid fuelS concentration

0.00

244

Solid and Liquid fuelN2 concentration

245

Solid and Liquid fuelH2O concentration

0.00

246

Solid and Liquid fuelO2 concentration

0.00

247
|
269

－

0.00 – 100.00－

270

How to calibration

276

Calibration mode

271
|
289

Data for setting, checking
ENERGY SUPPORT CORP.

0.00

－

0: Manual
1:Semi Auto
2: Auto0: Air 1 point calibration
1: Air,Zero 2 point calibration
2: Air,Span 2 point calibration
3: Air,Zero,Span 3 point calibration

See
Specifications
Manual.

by
0: Maker setting
1: Maker setting
2: RS-232C
3: Maker setting
0: 1200
1: 2400
2: 4800
3: 9600
0: 8 bit
1: 7 bit
0: Even parity
1: Odd parity
0: No check
1: Check used
0: 1 bit
1: 2 bit

290

Communication setting

291

Bit rate setting

292

Data length setting

293

Parity mode setting

294

Parity setting

295

Stop bit length setting

296
|
309

－

－

－

310

Data setting change password

0: Data change prohibited
201: Data change possible

201

OptionCaution notices when changing data settings.
Do not make changes to CH190 – 191. It will change the heater voltage supplied
to the sensor, which could damage the sensor.
15

(2) Output Range Switching
The output range switching method can be made from 2 methods: range switching by
key operation, by Contact input.
①Range switching by key operation (Local range switching)
By inputting 0 for CH026 and 0 for CH209, you can change output range 1 - 4 forCH020. You can select the same range No. as the input data, e.g. if you input "1",you get range 1, and if you input "2", you get range 2.
②Range switching using contact input (Remote range switching)
By inputting 0 for CH026 and 1 for CH209, the output range is switched in accordancewith the no-voltage contact input that is input to IN2 and IN3 of the analyzer terminal
block. The Contact input and selected range are related as shown below.
Contact Input
Selected Range
IN2-COM1
IN3-COM1
ON
ON
No.1
OFF
ON
No.2
ON
OFF
No.3
OFF
OFF
No.4
(3) Output Range setting
The output range can be set as desired up to 4 ranges, setting the range span value forCH030 - 033, and setting the unit for CH034 - 037.
For output range No. 1, range span value setting is CH030, unit setting is CH034.
For output range No. 2, range span value setting is CH031, unit setting is CH035.
For output range No. 3, range span value setting is CH032, unit setting is CH036.
For output range No. 4, range span value setting is CH033, unit setting is CH037.
When setting the unit, inputting 0 is “Not in use”, 1 is ppm, and 2 is %.
ExampleTo set 0 - 25 % for output range No. 1, input 25 for CH030 and 2 for CH034.
The span value for the output range is a minimum of 5 %.
A unit isn't to set up ppm.
(4) Gas Calibration
This analyzer can be used with air 1 point calibration. It doesn’t need to carry out
calibration ②,③,④ 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 the atmosphere 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.
By inputting 1 to CH208, steps (d) – (e) are automatically performed bytemporarily shorting between IN1 – COM on the analyzer terminal board.
16

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.

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.

17(e) Input to CH121 for span gas concentration. The concentration of span gas is
to use 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. Air 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.

4-5 Operation for when an Error Occurs
If an error code occurs, the error code is displayed on Display 1, and the O2 Vol display
stops displaying the normal value. If this occurs, follow the steps explained in 5-2
Troubleshooting on page 23. After you clear the error contents, press the

key orturn OFF the analyzer power supply (power supply reset) to restore the measurement
condition.

18

4-6 Applied operations(1) Primary delay time settingWith the data value input to CH016 (unit: seconds), primary delay can be applied to theconcentration output signal. The setting range is 0 - 99 seconds.
(2) WET/DRY
The output of oxygen concentration when 0 is inputted to CH18 is WET output.
When fuel to use is gas fuel, each element concentration (vol %) in the fuel is inputtedto CH230 - 239, and 1 is inputted to CH018. Oxygen concentration output becomes
DRY output by the above.
When fuel to use is solid fuel or liquid fuel, each element concentration (vol %) in the fuelis inputted to CH241 - 246, and 2 is inputted to CH018. Oxygen concentration output
becomes DRY output by the above.
(3) Output hold setting
If an error occurs for the sensor or receiver while CH023 is selected, this sets how theconcentration output signal is to be held. The relationship between the input data andhold contents is shown in the table below.
Input Data

Hold Function

0

Hold not applied when error occurs in sensor or receiver.

1

Hold applied using the value set for CH024 when sensor
or receiver error occurs.

2

Hold applied using the value 5 seconds before the error
occurred in the sensor or receiver.

(4) Output hold value setting
If a sensor or receiver error occurs during warming up (receiver countdown display) or
when 1 is input to CH023, hold is applied to the concentration output signal using thedata set for CH024 (unit:% FS). For example, to hold current output of 4 - 20 mA at
12mA, the setting is 50% FS.

19

(5) Current output adjustment① Connect an ammeter to check OUT1+ and OUT1- on the analyzer terminal board.
② When CH027 is called up, the display shows "cAL 1".
③ When you press thepress theENT

key, 0 is displayed on display 1. Each time you

key, display 1 can be switched to 0 and 100. When 0 is displayed,

output ZERO adjustment is possible, and when 100 is displayed, output SPAN
adjustment is possible using the following procedure.
④ The output value can be increased using the100, and reduced using the

key when display 1 indicates 0 or

key. Perform adjustment while using the ammeterto check the output.
⑤ When you have ﬁnished ZERO and SPAN adjustment in steps ④, press the ENT key
to return to the CH setting mode.
(6) Voltage output adjustment① Connect a voltmeter to check OUT2+ and OUT2- on the analyzer terminal board.
② When CH028 is called up, the display shows "cAL 2".
③ When you press the ENT key, 0 is displayed on display 1. Each time you press
thekey, display 1 can be switched to 0 and 100. When 0 is displayed, output

ZERO adjustment is possible, and when 100 is displayed, output SPAN adjustment ispossible using the following procedure.
④ The output value can be increased using the100, and reduced using the

key when display 1 indicates 0 or

key. Perform adjustment while using the voltmeterto check the output.
⑤ When you have finished ZERO and SPAN adjustment in steps ④, press
the

ENT

key to return to the CH setting mode.

(7) Concentration alarm setting
Set the concentration max. alarm on CH220, and set the setting value unit on CH222.
Set the concentration min. alarm on CH221, and set the setting value unit on CH223.
When setting the unit, inputting 0 is "Not in use", 1 is ppm, and 2 is %. A unit isn’t to use
ppm.
To output the concentration alarm contact output, set the concentration warning for
RY1 - 4 in 4 - 6 Applied Operations (8) on page 21.

20

(8) Contact output (RY1 – 4) setting
The contact output contents are set using CH200 - 203, and the contact output
movement settings are set using CH204 - 207.
RY1 contact output functions are set at CH200, and the contact output operation
settings are set using CH204.
RY2 contact output functions are set at CH201, and the contact output operation
settings are set using CH205.
RY3 contact output functions are set at CH202, and the contact output operation
settings are set using CH206.
RY4 contact output functions are set at CH203, and the contact output operation
settings are set using CH207.
When 0 is input for the movement setting, the NO. is set, and when 1 is set, NC is set.
See the table below for the difference between the contact output functions and thecontact operation NO. and NC settings.
CH
200 – 203
input data0
1

2Contact output functions

0 (NO)setting

1 (NC)setting

OFF

ON

During warming up,
measurement

OFF

ON

Upon analyzer error

ON

OFF

ON

OFF

OFF

ON

No contact output
Analyzer error

Range echo
(2 range
discrimination)

3

Range echo
(discrimination of
3 range or more)

4

READY

5

Concentration
max. alarm

6

Contact output operation
CH 204 – 207 input data

Concentration
min. alarm

When No.1(No.3)
range is selected.
When No.2(No.4)
range is selected.

No.1 range is selected
No.2 range is selected
No.3 range is selected
No.4 range is selected
During warming up
After warming up
During warming up
Concentration higher
than set value
Concentration lower
than set value
During warming up
Concentration higher
than set value
Concentration lower
than set value

RY
(N)
ON
OFF
ON
OFF

RY
(N+1)
ON
ON
OFF
OFF

ON
OFF
OFF

RY
RY
(N)
(N+1)
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON

ON

OFF

OFF

ON

OFF

ON

OFF

ON

ON

OFF

When using range echo with discrimination of 3 ranges or more, it is necessary to use 2
adjacent contact outputs, e.g. RY1, RY2.
For the wiring to RY, see the wiring circuit example on page 7.

21

(9) 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.
(10) Setting the data setting change password
By setting 0 for CH310, changing the setting data can be prohibited. Setting 201 for
CH310 makes it possible to change the data.
(11) Simulation output
By setting 1 for CH224, it is possible to output the simulation output value set to CH225
and CH226.
CH225:OUT1 Current simulation output value ( 0.0-100.0 (%))
CH226:OUT2 Voltage simulation output value ( 0.0-100.0 (%))

5. Maintenance
The following maintenance and inspection procedures are important in order to maintainnormal functioning and accurate measurement. Make sure you thoroughly understand theprocedure before performing maintenance.
Sensor replacement and pump maintenance cautions .
・ To prevent gas intoxication or oxygen deﬁciency, before you replace the sensor
or service the pump, always stop the supply of sample gas.
・ There is a danger of getting burned, so before you replace the sensor orservice the pump, turn off the power and allow the analyzer to cool down first.
If you must work while the analyzer is still hot, wear heat resistant gloves andwork carefully to avoid burns.

5-1 Daily and Periodic Inspection
Gas calibration

Inspection of Sensor

Frequency

Once or more per month.
(Periodic calibration is recommended to suit the operating
conditions.)

MethodPerform as calibration in accordance with section 4-4 (4) .

Frequency

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

MethodSensor replacement

Frequency

2 years

MethodReplace when necessary. (See 5-2 Troubleshooting.)
See the manual of TF type transmitter for the replacement
method.
22

5-2 Troubleshooting
Phenomenon
Unable to change
data.

Cause
0 is input for CH310.
Receiver problem

Analyzer error
occurring
Analyzer output,
display value does
not change.

Receiver problem

Wiring problem

Analyzer output,
display value
error

Analyzer output,
display value iszero

Analyzer output
and display value
do not match

Slow response

Leak of the sensor
installation part.
Condensation of thesensor installation part.
Gas calibration error

Countermeasure
Input 201 for CH310.
Request repair by
ENERGY SUPPORTCORP.
Turn power OFF, thenON again after 10
seconds. Or push
key to reset.
Request repair by
ENERGY SUPPORTCORP.
Check for wiring.

Remarks

Take
countermeasures inaccordance with error
code.

Adjust flow meterO-ring to within
range.

Check for leaks.
Heating heat is carriedout.

Perform gas
calibration
Sensor deterioration
Replace the sensor
Flammable gas
Eliminate flammableincluded 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
different.
(CH020). Checkoutput range setting(CH030 - 037) andreset.
Receiver problem
Request repair by
ENERGY SUPPORT
CORP.
Sample gas flow rate is Readjust sample gas
insufficient.
flow rate
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

23

In the case ofsampling.

Phenomenon
E-01 displayed
E-02 displayed
E-03 displayed(ROM, RAM,
EEROM error)
E-04 displayed
E-05 displayed
E-06 displayed
E-07 displayed
E-20 displayed(Heater failure)
E-08 displayed
E-09 displayed
E-10 displayed
E-11 displayed
E-12 displayed
E-13 displayed
E-14 displayed
E-21 displayed

E-35,36,38,
45,46,47
display

E-60 displayed

E-63 displayed

Cause
Receiver problem

Sensor heater failure
Receiver problem

Countermeasure
Turn power OFF, thenON again after 10 sec.
If operation is notrestored, request repair
by ENERGYSUPPORT CORP.
Replace sensor.
Request repair by
ENERGY SUPPORT
CORP.

Sensor failure
Receiver problem

Replace sensor.
Request repair by
ENERGY SUPPORT
CORP.

Heater terminal(S+,S-) release
Data is input outside
possible input range
Calibration error
E-35:Zero Cal error
E-36:Span Cal error
E-38:Air Cal error
E-45:Zero Cal error
E-46:Air Cal error

Check for wiring.

Output ranges are all"Not in use"

"Not in use" range
selected by range
switching

Input correct data
inside input range.
Check calibration gas
flow rate, andrecalibrate.
Check that standard
gas concentration
setting is not incorrect,
and recalibrate.
Replace sensor.
Change setting of
output range No.1 – 4
to other than "Not inuse"
Select range other than"Not in use" range.

24

Remarks

With the error cause
cleared (e.g. sensor
replaced), press the
key to clear theerror display.

6. Reference Material
6-1 Standard Specifications
Model
Measurement Principle
Measuring range
OutputRepeatability
Linearity
Response Time
Warming-up timeAmbient temperature
Humidity
Power
Conditions of Sample gas

DTF-201
Zirconia limiting current method
0 - 5，10，25% O2
DC4 - 20 mA (non-insulated output, load resistance 600 Ω or less)DC0 - 1 V (non-insulated output, load resistance 100 kΩ or more)±0.5% FS (0 – 5% O2 : ±1% FS or less )±1% FS (0 – 5% O2 : ±1% FS or less )10 sec. or less (90% response for calibration gas switching)Approx.3 min
0 - 50℃
90% RH or less
AC100-240V±10% 50/60Hz
O2%-15 - 25CO2%
0 - 20H2%
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.

25

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