Fuji Electric ZRF Instruction Manual

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Page 1

Instruction Manual

NON-DISPERSION TYPE INFRARED GAS ANALYZER

TYPE: ZRF

ALY

ZER

MEAS

FUNC

COMP

MEAS

＞

SPAN

∧

ENT

vol% ppm

HOLD

ZERO

SPAN

RANG

AUTO CAL

CAL

Fuji Electric Co.,Ltd. INZ-TN1ZRFb-E

Page 2

PREFACE

Congratulations on your purchase of Fuji’s Infrared Gas Analyzer (Type: ZRF).

• Before using, be sure to read this instruction manual carefully to ensure correct installation, operation and maintenance of the infrared gas analyzer. Note that incorrect handling may lead to trouble or personal injury.

• The specifications of this infrared gas analyzer are subject to change for improvement without prior notice.

• Do not attempt to modify the infrared gas analyzer without permission. Fuji is not responsible for any trouble caused by modification without permission.

• This instruction manual should always be kept on hand by the user. After reading, be sure to keep this manual in a place where it can easily be seen by the operator.

•

• Make sure that this manual is presented to the final user.

Manufacturer : Fuji Electric Co., Ltd. Type : Described in Fuji Electric’s company nameplate on main frame Date of manufacture : Described in Fuji Electric’s company nameplate on main frame Product nationality : Japan

Delivered items

 Analyzer main frame .................................................... 1

 Fuse (2A) ......................................................................2

 Cell assembling tool (only for block cell) .................... 1

 Instruction manual ........................................................1

 Test report ..................................................................... 1

 Mounting fixture (in case of panel flush mount) .......... 4

NOTICE

• It is prohibited to transfer part or all of this manual without Fuji Electric’s permission in written format.

• Description in this manual will be changed without prior notice for further improvement.

Issued in Sept., 1990 Rev. 1st ed. in July, 1993 Rev. 2nd ed. in Apr., 1997

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SAFETY PRECAUTION

First of all, read this “Safety Precaution” carefully, and then use the analyzer in the correct way.

• The cautionary descriptions listed here contain important information about safety, so they should

always be observed. Those safety precautions are ranked 2 levels; “DANGER” and “CAUTION”.

Warning & Symbol

DANGER:

CAUTION:

Caution on installation and transport of gas analyzer

DANGER: This unit is not an explosion-proof type. Do not use it in a place

CAUTION: • For installation, observe the rule on it given in the instruction

Meaning

Wrong handling may cause a dangerous situation, in which there is a risk of death or heavy injury.

Wrong handling may invite a dangerous situation, in which there is a possibility of medium-level trouble or slight injury or only physical damage is predictable. .

with explosive gases to prevent explosion, fire or other serious accidents.

manual and select a place where the weight of gas analyzer can be endured.

Installation at an unsuited place may cause turnover or fall and there is a risk of injury.

• For lifting the gas analyzer, be sure to wear protective gloves. Bare hands may invite an injury. .

• Before transport, fix the casing so that it will not open. Otherwise, the casing may be separated and fall to cause an injury.

• The gas analyzer is heavy. It should be transported carefully. Otherwise, body may be damaged or injured.

• During installation work, care should be taken to keep the unit free from entry of cable chips or other foreign objects. Otherwise, it may cause fire, trouble or malfunction of the unit.

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Caution on piping

DANGER: In piping, the following precautions should be observed. Wrong

piping may cause gas leakage. If the leaking gas contains a toxic component, there is a risk of serious accident being induced. Also, if combustible gas is contained, there is a danger of explosion, fire or the like occurring.

• Connect pipes correctly referring to the instruction manual.

• Exhaust should be led outdoors so that it will not remain in the locker and installation room.

• Exhaust from the analyzer should be relieved in the atmospheric air in order that an unnecessary pressure will not be applied to the analyzer. Otherwise, any pipe in the analyzer may be disconnected to cause gas leakage.

• For piping, use a pipe and a pressure reducing valve to which oil and grease are not adhering. If such a material is adhering, a fire or the like accident may be caused.

Caution on wiring

CAUTION: • Wiring is allowed only when all power supplies are turned off.

This is required for preventing a shock hazard.

• Enforce construction of specified grounding wire by all means. If the specified grounding construction is neglected, a shock hazard or fault may be caused.

• Wires should be the proper one meeting the ratings of this instrument. If using a wire which cannot endure the ratings, a fire may occur.

• Use power source that matches the rating of the unit. Use of power source out of rating may cause fire.

Caution on use

DANGER: • When handling the standard gas such as calibration gas, read

the instruction manual of the standard gas carefully and use the gas correctly.

CAUTION: • Avoid continuous operation with the casing drawn out.

• During operation, avoid opening the casing and touching the internal parts. Otherwise, you may suffer a burn or shock hazard.

iii

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Caution on maintenance and check

DANGER: • When doors are open during maintenance or inspection for

adjusting the optical system, etc., be sure to purge sufficiently the inside of the gas analyzer as well as the measuring gas line with nitrogen or air, in order to prevent poisoning, fire or explosion due to gas leaks.

CAUTION: • Before working, take off a wrist watch, finger ring or the like

metallic accessories. And never touch the instrument with a wet hand, Otherwise, you will have a shock hazard.

• If the fuse is blown, eliminate the cause, and then replace it with the one of the same capacity and type as before. Otherwise, shock hazard or fault may be caused.

Others

CAUTION: • If the cause of any fault cannot be determined despite reference

to the instruction manual, be sure to contact your dealer or Fuji Electric’s technician in charge of adjustment. If the instrument is disassembled carelessly, you may have a shock hazard or injury.

• Do not use a replacement part other than specified by the instrument maker. Otherwise, adequate performance will not be provided. Besides, an accident or fault may be caused.

• Replacement parts such as a maintenance part should be disposed of as incombustibles.

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CAUTIONS ON USE

 Select a suitable installation place.

Install the unit in a place with normal temperature and humidity, free from excessive change in temperature and from heat radiation and direct sunlight.

This unit is designed for indoor installation. When it is installed outdoors, choose a place where it is not exposed to wind and rain. Be sure to use a proper case cover.

 Do not install the unit in a place with vibrations.

 Cleaning of instrument

Do not use solvents such as benzine, thinner, etc., as it damages the case.

 Use the unit in a place with good environment.

The unit should be used in a place free from corrosive or combustible gases.

 Be careful with electric shocks.

The unit should be earthed to avoid electric shocks.

 Key operation

Do not use any object with a sharp tip when operating the function keys on the instrument panel.

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PREFACE........................................................................................................................................ i

SAFETY PRECAUTION...............................................................................................................ii

CAUTIONS ON USE..................................................................................................................... v

1. OUTLINE ............................................................................................................................... 1

2. NAME AND DESCRIPTION OF EACH COMPONENT .................................................... 2

2.1 Name and description of each component on case .................................................................... 2

2.2 Name and description of components on indication/operation panel........................................ 4

3. INSTALLATION ................................................................................................................... 6

3.1 Mounting method....................................................................................................................... 6

3.2 Piping method ............................................................................................................................ 7

3.3 Sampling .................................................................................................................................... 8

3.4 Wiring method ......................................................................................................................... 10

4. OPERATION ........................................................................................................................ 15

4.1 Operation procedure................................................................................................................. 15

4.2 Preparation for operation ......................................................................................................... 16

4.3 Start of measurement ............................................................................................................... 17

4.4 Shutdown ................................................................................................................................. 17

5. OPERATION OF INDICATION/OPERATION PANEL.................................................... 18

5.1 Outline of indication/operation panel ...................................................................................... 18

5.2 General operation..................................................................................................................... 20

① Calibration concentration setting (when not using Zirconia O ② Calibration concentration setting (when using Zirconia O

③ Alarm value setting (option) .............................................................................................. 27

④ Hold setting........................................................................................................................ 29

⑤ Remote range setting (option)............................................................................................ 31

⑥ Auto calibration (option) ................................................................................................... 32

⑦ Key lock ON/OFF Setting ................................................................................................. 40

⑧ Zero calibration.................................................................................................................. 41

⑨ Span calibration ................................................................................................................. 42

analyzer)......................... 22

analyzer)............................... 24

6. MAINTENANCE MODE .................................................................................................... 43

6.1 Response time setting .............................................................................................................. 44

6.2 O

6.3 Optical balance adjustment...................................................................................................... 45

6.4 Interference compensation coefficient setting ......................................................................... 46

6.5 Indication and clearing of integrated drift value...................................................................... 47

conversion reference value setting...................................................................................... 44

7. MAINTENANCE ................................................................................................................. 48

7.1 Routine maintenance................................................................................................................ 48

7.2 Periodical inspection................................................................................................................ 49

8. ERROR CODES AND REMEDIES .................................................................................... 56

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1. OUTLINE

This is a multi-function, easy-to-operate non-dispersion type infrared gas analyzer for measuring the concentration of gases such as NO, SO featuring high sensitivity and reliability, plus a microprocessor for easy operation.

, CO2 and CO. It utilizes a highly reputed mass flow type detector

INFRARED GAS ANALYZER

Auto calibration function (option)

Self diagnosis function

Zero point and span easily adjustable by key operation

ON OFF

MEAS

FUNC

MEAS

COMP

Remote range, range detect function (option)

vol% ppm

SPAN

HOLD

＞

∧

AUTO CAL

Upper/lower limit alarm function (option)

Output hold function

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2. NAME AND DESCRIPTION OF EACH COMPONENT

2.1 Name and description of each component on case

INFRARED GAS ANALYZER

① Grip

② Knurled knob

POWER

ON OFF

MEAS

③ Power switch ④ Indication/operation panel

* *

⑧ Reference gas inlet ⑦ Sample gas outlet

⑥ Sample gas inlet

MEAS

＞

SPAN

HOLD

RMT RANGE

∧

ENT

ZERO

Front panel

SPAN

AUTO CAL

CAL

⑨ Reference gas outlet ⑩ Purge gas inlet

*Used for differential flow system only.

⑪ COMP1 (1st component) input/output terminal ⑫ COMP2 (2nd component) input/output terminal ⑬ O2 input/output terminal (option)

SUMPLE GAS

INLET

OUTLET

COMP1 COMP2 O2 AUTO CAL

PLUG

Infrared

Gas Analyzer

Type Range Output

DC mA

Power Supply AC v 50/60Hz

Mid

Ser No.

Fuji Electric Co., Ltd

Rear panel

⑮ Power terminal

Japan

⑭ AUTO CAL input/output terminal (option)

Page 10

Part name

① Grip ② Knurled knob ③ Power switch

④ Indication/operation panel

⑤ Flowmeter (option) ⑥ Sample gas inlet ⑦ Sample gas outlet ⑧ Reference gas inlet ⑨ Reference gas outlet ⑩ Purge gas inlet ⑪ COMP1 (1st component)

input/output terminal

⑫ COMP2 (2nd component)

input/output terminal

⑬ O2 input/output terminal

(option)

⑭ AUTO CAL input/output

terminal (option)

⑮ Power terminals

Description Used to pull out the interior (base). Used to fasten the instrument and case. Turn ON to supply power to the internal components (excluding the pump).

After 3 or 4 seconds the LED indicator lights up. (Refer to 4.2 for pump power supply.)

Indicates gas concentration, measuring range, etc., and contains keys necessary for routine operation and settings. Refer to section 5 for operating method.

Used to check sample gas flow rate. Float rises when sample gas flows. Connect gas to be measured here. Connect pipe for discharging measured gas here. Connect reference gas here in case of differential flow system. Connect pipe here for discharging reference gas. Connect pipe for purge gas here. Used for 1st component of standard type and sample switching type or flow

differential type. Input/output terminal for 2nd component of two-component analyzer.

Input/output terminal for O2 analyzer.

Input/output terminal for auto calibration function.

Supply power to the analyzer.

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2.2 Name and description of components on indication/operation panel

3 Unit indication lamp 2 Main indication

1 Component indication

7 Function indicator lamp

9 Component selector key

Digit shift key

Numeric input key

8 Function key

TU TH

MEAS CAL SET ALH SET HOLD RMT RANGE AUTO CAL

COMP

FUNC

＞ ∧

vol% ppm

MO WE FR

vol% ppm

vol%

ENT ZERO SPAN CAL

RANGE

(Three components of NO, SO2 and O2 are indicated in this figure.)

4 Day indication 5 Sub indication 6 Range changeover key

Calibration start key

Span calibration key

Zero calibration key

ENT key

Page 12

Part name

① Component indication ② Main indication

③ Unit indication lamp ④ Day indication

⑤ Sub indication ⑥ Range changeover key

⑦ Function indicator lamp

⑧ Function key ⑨ Component selector key ⑩ Digit shift key ⑪ Numeric input key ⑫ ENT key

⑬ Zero calibration key ⑭ Span calibration key ⑮ Calibration start key

Description Indicates kind of gas measured. Indicates measured concentration. Also indicates various setpoints for alarm

function, auto calibration function (option), etc. Indicates unit of measured gas concentration. Indicates current day or day of starting by means of bar in auto calibration

(option) setting mode. Indication SU MO TU WE TH FR SA Day Sun Mon Tue Wed Thu Fri Sat Indicates measuring range, error code, various setpoints, etc. Used when changing the range. High range is set when pressing and low

range is set when pressing . Relevant lamp lights up when following functions are set. MEAS : Lights up in measuring status. CAL SET : Flashes in calibration concentration setting mode. ALM SET : Flashes in alarm setting mode. HOLD : Flashes in hold setting mode or lights steadily while hold

function is activated.

RMT RANGE : Flashes in remote range setting mode or lights steadily while

remote range function is activated.

AUTO CAL : Flashes in auto calibration setting mode or lights steadily

while auto calibration function is activated. Setting mode is changed at each press of this key. (Refer to section 5.) Set component is changed for each setting mode or span adjustment. Shift is made from highest toward lowest digit at each press of this key. Selected digit is incremented at each press of this key. By pressing this key after setting, the set contents are memorized and become

valid. Used for zero point calibration. (Lamp flashes in zero calibration mode.) Used for span calibration. (Lamp flashes in span calibration mode.) Start key for manual calibration.

Zero is calibrated by pressing ZERO and CAL keys. Span is calibrated by pressing SPAN and CAL keys. (CAL lamp lights steadily during calibration.)

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3. INSTALLATION

• This unit is not explosion-proof type. Do not use it in a place with explosive gases to prevent explosion, fire or other serious accidents.

• This unit is heavy and should be mounted securely to prevent it from falling. Before mounting the unit, make sure that all the knobs on the front of the unit are fixed firmly.

•

3.1 Mounting method

DANGER

CAUTIONS

The following three methods are usable for mounting the analyzer.

Type Outer dimensions of analyzer Mounting dimensions Mounting method

19 inch rack mounting

Panel mounting

ZRF

443 483

443

220

220

438 or more

465

436

+2 –0

146

213

240 or

–0

240 or

(Unit: mm)

Support

Mounting

bracket

Support

ZRF

Desk top type

443

220

233

(1) Mounting method

Mount so that the front panel is vertical.

(2) Caution on installation

70% or more of the instrument weight should be supported by the case bottom. (When mounting on a panel or 19 inch rack, attach a support under the rear of the case.)

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3.2 Piping method

DANGER

• Use clean pipes of which inside should not be stained with deposits of oil or fat.

• Piping joints must be tightened firmly to avoid gas leakage.

• Exhaust gas should be discharged to an outdoor safe place to prevent it from staying in the

sampling device and indoors.

• Exhaust from the analyzer should be relieved at the atmospheric pressure in order that an unnecessary pressure will not be applied to the analyzer. Otherwise, any pipe in the analyzer may be disconnected to cause gas leakage.

(1) Piping procedure

Connect pipes to the gas inlets and outlets located at the top left on the analyzer rear. Use anticorrosive tubes made of Teflon, stainless steel, polyethylene or the like for connecting the

analyzer and sampling system. Avoid using rubber or soft vinyl tubes even if there is no worry about corrosion. Improper piping material may cause inaccurate indication due to adsorption of gas.

The pipe connections are Rc1/4 (PT1/4) internal thread. And the pipes should be kept as short as possible to quicken the response. A suitable inner diameter is about 4mm. Note that dust entering the analyzer may cause a malfunction, so be sure to use clean pipes and joints.

Carry out gas piping as follows.

Purge gas inlet : Connect purge gas pipe here.

Reference gas outlet : Connect pipe here for discharging reference gas.

Reference gas inlet : Connect reference gas here in case of flow differential system.

Sample gas outlet : Connect pipe here for discharging measured gas.

Sample gas inlet : Connect gas to be measured here.

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(2) Piping diagram

Shown next is an example of the configuration for measuring three components. (When using Zirconia O

analyzer)

Gas analyzer

(ZRF)

Sample gas inlet

Flow meter

Air

(Zero calibration gas)

Change

-over valve

(Span calibration gas)

Sample gas outlet

Arrange so that sample ga outlet is at atmospheric pr

Sample gas

3.3 Sampling

3.3.1 Sample gas condition

(1) Remove all dust included in sample gas by means of a filter. Use a filter capable of eliminating

dust particles of 0.3µ at the final stage.

(2) The dew point of sample gas must be lower than the ambient temperature to prevent accumula-

tion of drain inside the analyzer. If water vapor is included in the sample gas, then feed the gas through a dehumidifier to lower the dew point to around 0°C.

(3) If SO

(4) Note that if strongly corrosive gas such as Cl

(5) The sample gas temperature should range from 0 to 50°C. Be careful not to introduce a high

mist is included in sample gas, then use a mist filter, cooler etc. to exclude the mist. The

same applies if other kinds of mist are included.

, F2 or HCr is included in sample gas in a large

amount, it will shorten the service life of the analyzer.

temperature gas directly into the analyzer.

3.3.2 Sample gas flow rate

The sample gas flow rate should be as follows. Provide a flowmeter as shown in the preceding diagram to measure the flow rate.

Standard type 0.5r±0.25r/minute Sample switching type (1r+1r)±0.1r/minute (sample gas+reference gas) Flow differential type (0.5r+ 0.5r)±0.25r/minute (sample gas +reference gas)

Page 16

3.3.3 Preparation of standard gas

Prepare standard gas for zero point and span point calibration.

Zero gas N2 gas Span gas Gas with concentration of 80% or more of full scale for each component

(Span gas in measuring method is gas with concentration of 90% or more of full scale.)

When using a Zirconia O2 analyzer, use air for zero gas.

Zero gas Air (O2 analyser span gas in measuring method) Note) Span gas 1 to 2% O2 (O2 analyser span gas in measuring method)

Gas with concentration of 80% or more of full scale for other than Zirconia O2 analyzer. (Span gas in measuring method is gas with concentration of 90% or more of full scale.)

Note: When calibrating the low and high ranges of Zirconia type O2 analyzer, use 9 to 10% O2/N

for the low range, and air for the high range.

3.3.4 Analyzer interior purging

Although purging of the analyzer interior is normally unnecessary, it should be considered in the following cases.

(1) When combustible gas is included in the measured gas (2) When corrosive gas is included in the atmosphere at the installation site. (3) When the same gas as the measured components is included in the atmosphere at the installa-

tion site.

In such cases, purge the analyzer interior with instrumentation air or N should be about 1r/minute.

And dust or mist should be completely eliminated from the gas for purging.

3.3.5 Pressure at sample gas outlet

Arrange so that the sample gas outlet is at atmospheric pressure.

. The flow rate for purging

Page 17

3.4 Wiring method

CAUTIONS

: Turn OFF all the power before starting a wiring work to prevent a risk of electric

shocks.

: Be sure to enforce construction of specified grounding.

The external terminals are provided on the rear of the instrument. Carry out wiring to each terminal according to the figure. Terminal screws are M3.5 (but power

terminals are M4). Use shielded wires for the output signals to suppress the influence of external noise.

3.4.1 Power terminals

The power terminals are arranged as shown in the figure. Connect the specified power supply to the terminals and

connect a grounding wire to the ground terminal. The grounding should be made securely. Use solderless terminals (for M4) for connection to the

terminals.

Avoid installing this analyzer near an electrical apparatus which produces power source noise. (Such as high frequency furnace, electric welder, etc.) If use of the analyzer near such an apparatus is unavoidable, then keep the power lines separate to avoid noise.

If noise from a relay, solenoid valve or the like enters the power source, then attach a varistor or a spark killer to the noise source as shown in the figure.

Note that attaching the varistor or spark killer away from the noise source will be ineffective.

Power terminals (see 3.4.1)

Auto CAL input /output terminal (option) (see 3.4.5) O

input/output terminal (option) (see 3.4.4) COMP2 (2nd component) input/output terminal (see 3.4.3) COMP1 (1st component) input/output terminal (see 3.4.2)

Source

When noise generating source is located nearby

ZRF power supply

Varister or spark killer

Grounding wire

Power supply

Close connection

Noise generating source

Page 18

3.4.2 COMP 1 (1st component) input/output terminal

This output terminal is used with the standard single-component type, sample switching type or flow differential type.

The wiring method is as follows.

Instantantaneous value output signal 0 to 1V DC or 4 to 20mA DC

Range identification contact output (option)

Fault

External hold input (option)

Remote range changeover signal input (option)

Average value output signal 0 to 1V DC or 4 to 20mA DC (option)

Upper limit alarm contact output (option)

Lower limit alarm contact output (option)

3.4.3 COMP2 (2nd component) input/output terminal

This output terminal is for the 2nd component of the standard type. The wiring method is as follows

Instantantaneous value output signal 0 to 1V DC or 4 to 20mA DC

Average value output signal 0 to 1V DC or 4 to 20mA DC (option)

Upper limit alarm contact output (option)

Lower limit alarm contact output (option)

Range identification contact output (option)

Remote range input (option)

Page 19

COMP1, COMP 2 input/output terminal block

<Instantaneous value output> Instantaneous value of 0 to 1V DC or 4 to 20mA DC is outputted.

<Moving average output> (option) Specified 1 or 4 moving average value of 0 to 1V DC or 4 to 20mA DC is outputted.

<Upper limit alarm contact output> (option) When signal exceeds upper limit, terminals ⑤ and ⑥ turn from ON to OFF and ⑥ and ⑦ turn from OFF

to ON. 1c contact 250V AC, 2A (resistive load)

<Lower limit alarm contact output> (option) When signal is below lower limit, terminals ⑧ and ⑨ turn from ON to OFF and ⑨ ⑩ turn from OFF to

ON. 1c contact 250V AC, 2A (resistive load)

<Range identification signal output> (option) Terminals ⑬ and ⑭ are conductive when 1st range is selected: ⑬ and ⑭ are open when 2nd range is selected.

1a contact 250V AC, 2A (resistive load)

<Remote range input> (option) 1st range is selected when 5V DC is inputted to terminals ⑲ and ⑳ ; 2nd range is selected when there is

no input to terminals ⑲ and ⑳ .

<External hold input> (Input to COMP1 terminal) (option) Hold setting component is outputted and held with 5V DC inputted between ⑲ and ⑳ .

<Fault> (Input to COMP1 terminal) Contact output when analyzer incurs an abnormality. 1a contact 250V AC, 2A (resistive load)

Page 20

3.4.4 O2 input/output terminals (option)

This is the input/output terminal for the standard type O

The wiring method is as follows.

Instantantaneous value output signal 0 to 1V DC or 4 to 20mA DC

O2 analyzer input signal 0 to 1V DC

converted value output signal (1st component) 0 to 1V DC or 4 to 20mA DC O

converted value output signal (2nd component) 0 to 1V DC or 4 to 20mA DC

input/output terminal block

1 11 2

3 4 5 6

7 8

12 13

14 15 16

17 18

Range identification contact output (option)

Remote range input (option)

Upper limit alarm contact output (option)

Lower limit alarm contact output (option)

<Instantaneous value output> Instantaneous value of 0 to 1V DC or 4 to 20mA DC is outputted.

analyzer.

analyzer input signal>

analyzer signal of 0 to linear 1V DC is inputted.

conversion output>

conversion instantaneous value is outputted with preset conversion reference value.

<Upper limit alarm contact output> (option) When upper limit is exceeded, terminals ⑮ and ⑯ turn from ON to off and ⑯ and ⑰ turn from OFF to

ON . 1c contact 250V AC, 2A (resistive load) <Lower limit alarm contact output> (option) When signal is below lower limit, terminals ⑱ and ⑲ turn from ON to OFF and ⑲ and ⑳ turn from OFF

to ON . 1c contact 250V AC, 2A (resistive load)

<Range identification contact output> (option) Terminals ⑪ and ⑫ are conductive when 1st range is selected: ⑪ and ⑫ are open when 2nd range is

selected. 1a contact 250V AC, 2A (resistive load)

<Remote range input> (option) 1st range is selected when 5V DC is inputted to terminals ⑬ and ⑭ ; 2nd range is selected when there is

no input to terminals ⑬ and ⑭ .

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3.4.5 AUTO CAL input/output terminal (option)

This is the output terminal for the auto calibration function. The wiring method is as follows.

Auto calibration contact output

Zero gas contact output

Span gas 1 contact output

Span gas 2 contact output

Span gas 3 contact output

AUTO CAL input/output terminal block (option)

<Contact output during auto calibration> Contact between ① and ② is ON during auto calibration. 1a contact, 250V AC, 2A (resistive load)

Auto calibration abnormal contact output

Remote start input

<Zero gas contact output> Contact output for driving solenoid valve for flowing zero gas. 1a contact 250V AC, 2A (resistive load)

<Span gas 1 contact output> Contact output for driving solenoid valve for flowing 1st component span gas. 1a contact 250V AC, 2A (resistive load)

<Span gas 2 contact output> Contact output for driving solenoid valve for flowing 2nd component span gas. 1a contact 250V AC, 2A (resistive load)

<Span gas 3 contact output> Contact output for driving solenoid valve for flowing O

analyzer span gas.

1a contact 250V AC, 2A (resistive load)

<Auto calibration abnormal contact output> Contact output when abnormality occurs during auto calibration.

<Remote start input> Input for starting auto calibration via external signal. Calibration started by inputting 5V DC between

terminals ⑬ and ⑭ .

Page 22

4. OPERATION

DANGER

• When handling the standard gas such as calibration gas, read the instruction manual of the standard gas carefully and use the gas correctly.

CAUTIONS

• Avoid continuous operation with the casing drawn out.

• During operation, avoid opening the casing and touching the internal parts. Otherwise,

you may suffer a burn or shock hazard.

4.1 Operation procedure

Set up the operational status by the following procedure. Operation is started by using the keys on the front panel of the analyzer. Before use, please read

through the instruction manual for the analyzer.

Mounting

Piping

Wiring

Check of piping

Purging inside alanyzer

Power switch on

Warming up

General Operation

Alarm value setting

Hold setting

Remote range setting

Automatic calibration setting

Concentration setting of zero (air) point and span calibration gas

Refer to Item 3.1.

Refer to Item 3.2.

Refer to Item 3.4.

Refer to Item 4.2 (1).

Refer to Item 4.2 (2).

Refer to Item 4.2 (3).

Refer to Item 4.2 (4).

Refer to Item 5.2 3).

Refer to Item 5.2 4).

Refer to Item 5.2 5).

Refer to Item 5.2 6).

Refer to Item 5.2 1) to 2).

Carry out if needed.

Zero/span calibration

Key lock ON/OFF setting

Intruduction of sample gas (Start of measuring)

Refer to Item 5.2 8) to 9).

Refer to Item 5.2 7).

Refer to Item 4.3.

Carry out if needed.

Page 23

4.2 Preparation for operation

(1) Check of piping

Check that piping has been made correctly.

(2) Purging of analyzer interior

When purging is necessary, then flow purge gas for about 3 hours before turning on power.

Purge gas

SAMPLE GAS

INLET INLETOUTLET OUTLET PURGE

(3) Turning on power

Turn on the power switch and indication will appear in a few seconds.

INFRARED GAS ANALYZER

POW

ON OFF

FUNC

COMP

vol% ppm

T RAN

ENT

ZERO

SPAN

＞



∧



(4) Turn on pump power supply

When the optional pump is provided, then pull out the base and turn on the pump power supply.

(5) Warmup

Flow the zero gas and warm up the instrument. The warmup is completed when the zero point stabilizes (about 4 hours).

Page 24

(6) Concentration setting for calibration gas

Next set the concentration for the calibration gas. Refer to 5.2 ① , ② for the procedure.

(7) Zero calibration

Flow zero calibration gas and calibrate the zero point. Refer to 5.2 ⑧ for the key operation for zero calibration.

(8) Span calibration

Flow span calibration gas and calibrate the span. Refer to 5.2 ⑨ for the key operation for span calibration.

4.3 Start of measurement

Flow the sample gas to start measurement.

4.4 Shutdown

Stop the flow of sample gas, and flow zero gas to purge the interior of the measuring cell. Then turn off the power switch of the instrument. When a pump is equipped, also turn off the pump power supply.

* The set values are retained in the memory even when power is turned off. But note that

with the clock function of the auto calibration function, the backup fails to work after 48 hours has elapsed, so when the power is turned on again, the correct time must be re-inputted.

CAUTIONS

Density below zero (indicated by a minus symbol) is displayed as zero. When ZERO or SPAN key is pressed, this function is released to display minus value.

Page 25

5. OPERATION OF INDICATION/OPERATION PANEL

5.1 Outline of indication/operation panel

This panel consists of the following functions.

Function and key operation Main indication Sub indication Function lamp Page

(Option)

Measurement mode

FUNC

Setting of calibration density

zero setting mode)

and CAL>

Span setting mode

and CAL>

(Setting of single zero calibration)

and CAL>

All/single range setting

FUNC

Alarm setting

and CAL>

Measured value

Zero point calibration density (with zirconia O2)

Span point calibration density

(with O2 meter)

Range

Set value

Alarm value

MEAS lamp ON

CAL SET lamp ON

ALM SET lamp flickers

Hysteresis setting

FUNC

Hold setting

(Option)

Remote range setting

FUNC

To be continued to the next page.

Hysteresis value

ON or OFF

ALM SET lamp flickers

Hold lamp flickers.

RMT RANGE lamp flickers.

Page 26

Function and key operation Main indication Sub indication Function lamp Page

(Option)

Auto calibration

Present time setting

FUNC

Auto calibration start time setting

FUNC

Auto calibration cycle setting

FUNC

Calibration gas flow time setting

FUNC

Calibration gas flow mode setting

FUNC

Auto calibration selection

Hour & minute

Day of week

Time

Mode No.

ON or OFF

AUTO CAL flickers.

AUTO CAL lamp flickers.

FUNC

Key lock selection

FUNC

Zero calibration ZERO CAL

Measured value

ON or OFF

Range

—

ZERO/CAL

key lamp flickers.

Span calibration SPAN CAL

Measured value

Range

SPAN/CAL key lamp flickers.

• When the setting mode is assumed, the analog output signal is held at the value just before entering this mode.

• When optional functions are not provided, the contents of these functions are not indicated.

Page 27

5.2 General operation

The measuring mode is assumed when power is turned ON. The gas concentration appears on the main indication, while the range being used appears on the

sub indication.

Gas concentration indication

• When selecting the range In the setting status, as shown in

the figure at the right, the high range is selected when

key is pressed, while the low range is selected when

When selecting the gas component.

•

key is pressed.

In the setting status, as shown in the figure at the right, the gas component can be set by pressing COMP key.

Example: When COMP key is pressed

while the 1st component is flashing, the flashing moves to the 2nd component (Figure at the right).

The setting for the 2nd component is now chageable.

COMP key is not provided for

single-component analyzer.

Advice on Operation

COMP

＞

∧

By pressing this key, gas component to be set is selected.

Range indication

High range is selected by pressing this key.

Low range is selected by pressing this key.

No. 1 component

No. 2 component

No. 3 component

CAL

SPANZEROENT

Page 28

• For releasing zero or span If a mistake has been made in zero

or span calibration, then perform a reset in the following way.

The figure at the right shows an example.

If SPAN key has been pressed mistakenly instead of ZERO key, press SPAN key again.

Calibration is cleared.

If ZERO key has been pressed mistakenly instead of SPAN key, press ZERO key again.

Calibration is cleared.

To clear moving average value, press the pressing the

key 3 times while

key in measure-

ment mode. The data of each moving average

value is cleared.

SPANZERO

Key was pressed by mistake.

SPANZERO

Lamp flickers.

SPANZERO

Press the same key once again and the lamp will go off. In this way, calibration is released, press Zero key.

Page 29

q Calibration concentration setting (when not using Zirconia O2 analyzer)

When not using a Zirconia O

analyzer, then set a span value for the calibration concentration

setting. (Zero point calibration concentration is fixed at zero.) Set the calibration gas concentration (span value). When FUNC key is pressed in the measuring status, the

previously set span value will appear on the main indication.

The CAL SET LED of the function indicating lamps will flash.

By pressing the

key, the highest digit of the main indication for the 1st component will flash, and the span value can now be set.

Select a range with the

keys. After selecting the range, set a span value in this status. Then numeric value will be incremented by pressing

key. The digit to be set can be selected by pressing

key.

For selecting the 2nd and subsequent components and the range, press the

key and while the main

indication for the 1st component is flashing, press the

COMP

component to be set will flash. Now press the

key and then the main indication for the

keys to select the range to be set.

FUNC

CAL SET

＞

∧ ＞

ENT

When the span value has been set, press the ENT key. Setting operation is now completed.

Setting of single zero calibration:

This setting operation is used to select a zero calibration component.

This function is invalid when O

component is not in-

cluded. Press the

key in span setting mode.

The first digit in the main indication flickers.

＞

CAL

Page 30

Press the CAL key. “ ” appears in the main indication and “

At each press of the order of “

” appears in the sub indication.

key, the setting is changed in the

→ → → ”.

After selecting, press the ENT key. The data is stored in memory.

CAL

∧

= Meaning of set value =

Select

code

0 Calibration of all components Calibration of all components 1 Calibration of components other than O 2 Calibration of O

Manual calibration Auto calibration

Zero calibration

Calibration of components other than O

Note 1: This mode is invalid when O2 component is not included. Note 2:

The main indication flickers when zero calibration ( ZERO + CAL ) is made on selected components.

Setting of single calibration of all or each range: This setting operation is used for calibration of all or each

range during zero/span calibration. Perform setting in the following way. By pressing CAL key while the highest digit of the main

indication for the 1st component is flashing, then “ will appear on the main indication and “

” will appear on

”

the sub indication. Press

key and “ “ will change to “ ”.

ENT

CAL

∧

= Meaning of set value =

:The calibration is valid only for the selected range, and

zero and span calibration can be made independently for each range.

: By conducting zero and span calibration for one range,

the calibration will be done automatically for the other ranges as well.

Note 3: S.CAL “1” is interlocked with the range ratio

calibrated by “0” on each range.

Note 4: When a 1-range meter is used, be sure to set

S.CAL to “0”. If “1” is set, the result is the same as “0”.

When the selection has been finished, press the ENT key.

ENT

Page 31

w Calibration concentration setting (when using Zirconia O2 analyzer)

When a Zirconia O tion for each components of the O

analyzer is provided, set the zero (air) point and the span calibration concentra-

analyzer. Refer to 3.3.3. Preparation of standard gas for the

concentration of calibration gas to be used.

• Setting of calibration concentration for zero (air) point The zero (air) point calibration concentration is settable

for the O concentration for components other than for the O

analyzer alone. The zero point calibration

analyzer is fixed at zero. By pressing the FUNC key in the measuring status, the

calibration concentration previously set for the zero (air) point will appear on the main indication.

The CAL SET LED of the function indicating lamps will flash.

By pressing the main indication of the O

keys, the 2nd highest digit of the

analyzer will flash, and zero

point setting is enabled. Press the

keys to select a range.

The numeric value will be incremented by pressing key.

The digit to be set is selected by pressing

key.

Set the same air concentration for both high and low range.

Press the ENT key after setting the zero point. Setting operation is now completed.

FUNC

CAL SET

＞

∧

ENT

＞

Note: When using air for the high range and 9-10 vol % O

value of concentration for each range.

for the low range, be sure to set the

2/N2

Page 32

• Setting of span calibration concentration

= Setting for each components =

Press the CAL key in the status where the digit of the O analyzer main indication is flashing via the zero (air) point calibration concentration setting.

The previously set span value will now appear on the main indication.

The CAL SET LED of the function indicating lamps will flash.

The highest digit of the 1st component main indication will flash and the span value is now settable.

Press the

keys to select a range.

When the range has been selected, set a span value in this status.

The numeric value will be incremented by pressing key.

Press the

key and the digit to be set can be selected.

For selecting the 2nd and subsequent components and the range, press the

key and in the status where the 1st component main indication is flashing, press the COMP key and the main indication for the component to be set will flash. Press the

keys to

select the range to be set.

CAL

∧

＞

ENT

= Setting of O

analyzer =

COMP

Press the ENT key after setting the span value. Setting operation is now completed.

Setting of single zero calibration: This setting operation is used to select a zero calibration

component. This function is invalid when O

component is not in-

cluded. Press the

key in span setting mode.

The first digit in the main indication flickers.

ENT

＞

∧

＞

Page 33

Press the CAL key. “ ” appears in the main indication and “

At each press of the

“ appears in the sub indication.

key, the setting is changed in the

CAL

order of “ After selecting, press the ENT key. The data is stored in

→ → → ”.

∧

memory.

= Meaning of set value =

Select

code

0 Calibration of all components Calibration of all components 1 Calibration of components other than O 2 Calibration of O

Manual calibration Auto calibration

Zero calibration

Calibration of components other than O

ENT

Note 1: This mode is invalid when O2 component is not included. Note 2: The main indication flickers when zero calibration

( ZERO + CAL ) is made on selected components.

Setting of single calibration of all or each range: This setting operation is used for calibration of all or each range during zero/span calibration. Carry out the setting as follows. By pressing CAL key while the highest digit of the 1st

components main indication is flashing, “ appear on the main indication and “

” will appear on the

” will

sub indication.

CAL

Press key and “ ” will change to “ ”.

= Meaning of set values =

: The calibration is valid only for the selected range,

and zero and span calibration can be made independently for each range.

: By conducting zero and span calibration for one

range, the calibration will be done automatically for the other ranges as well.

Note 3: S.CAL “1” is interlocked with the range ratio

calibrated by “0” on each range.

Note 4: When a 1-range meter is used, be sure to set

S.CAL to “0”. If “1” is set, the result is the

same as “0”. Press the ENT key when the selection is finished. Note: When using air for the high range and 9-10 vol % O

value of concentration for each range.

∧

ENT

for the low range, be sure to set the

2/N2

Page 34

e Alarm value setting (option)

Set the upper and lower limit alarms and output an alarm. Setting can be made for each component and each range. Press FUNC key in the measuring status and “ ”

will be indicated. The ALM SET LED of the function indicating lamps will

flash. Press the

key and then alarm values are settable. The

highest two digits of the main indication will flash.

Contents of alarm value setting indication

:Upper limit :Lower limit

:Lower range :Upper range

FUNC

Setting value

:Plus :Minus

Press the COMP key and select the gas component for which alarms will be set.

Press

Press the

keys and select the range.

key to select either the upper or lower limit

alarm.

” indication appears when lower limit alarm is to

“ be set and “

” indication appears when upper limit

alarm is to be set.

Press the

key and the lowest digit flashes, so press the

key to select either plus “ ”or minus “ ”for the set

value.

A minus value should be set after releasing the alarm function referring to the next page.

Press the

key and the highest digit of the main indication flashes, so set an alarm value. The numeric value is incremented by pressing

Press the

key and the digit can be selected.

key.

ALM SET

COMP

＞

∧

＞

∧

＞

∧

ENT

＞

)(

When the alarm setting is finished, press the ENT key. Setting operation is now completed.

CAUTIONS

Alarm values are settable within the selected range. Setting is performed with the concentration value.

Note that the upper limit alarm cannot be set below the lower limit alarm. And if the lower limit alarm is set above the already memorized upper limit alarm, then the

upper limit alarm will become the same value as the newly set lower limit alarm.

Page 35

To make the alarm function invalid

For making the alarm function invalid, then set the upper limit alarm value to “ the lower limit alarm value to “

” for each component and each range.

Note: Use the following hysteresis setting as a reference when setting the hysteresis for the

alarm value.

Hysteresis setting

Set a hysteresis versus the alarm value.

Setting range of ±20% max.

OFF

▲

Upper limit set value

Setting range of ±20% max.

OFF

▲

Lower limit set value

” and

When CAL key is pressed in the alarm setting status, “

will appear on the main indication. This is the mode for setting the hysteresis for the alarm value.

Change the hysteresis value on the sub indication by pressing the

key.

The hysteresis is settable in 1% steps in a range of

±0 to ±20% versus the measuring range.

→

The indication changes from

→

→...........

..............

Press the ENT key when the setting is finished.

”

CAL

∧

ENT

Page 36

r Hold setting

This is used when calibrating for holding the output signal at the value just before entering calibration. (The indication is not held.)

The hold function is settable for each component. Set to OFF when not using. Press the FUNC key in the measuring status and

“

” will be indicated.

The HOLD LED of the function indicating lamps will flash.

Press the

key and the hold function will be settable. The sub indication will flash.

Press the COMP key and select a setting component.

Select hold “

” or “ ” by pressing the key.

Press the ENT key after setting the hold function. Setting operation is now completed.

At hold ON, the HOLD of the function indicating lamp will light steadily while the hold functon is activated.

The unit indicating lamp flickers only for components which have been set. This lamp goes off at hold OFF.

FUNC

HOLD

＞（）

∧

ENT

COMP

Note: Only the output will be held when this function is “

”, the indication is not held.

Page 37

Hold function

<Output hold functions after manual calibration> The following shows the output hold function after manual calibration (zero or span). The hold function is cleared automatically after 30 minutes or it can be cleared by key operation

(manual).

1. Operation

ZERO

Calibration operation

Output hold

CAL keykey

30 min.

2. Clear operation

1) Auto clear Press the ZERO key or SPAN key after hold setting (ON/OFF). Output hold is started and calibration is completed with CAL key. Then, the hold function is automatically cleared after 30 minutes.

2) Manual clear The hold function is cleared manually by pressing the ENT key and CAL key at the same time. Note 1: During auto calibration, the contact output between terminals ① and ② does not

operate when it is under manual calibration.

Note 2: Output hold is effective only for preset components.

<Output hold function under auto calibration> Output hold function under auto calibration and replacement time. For operation, refer to Item ⑥ .

<External hold function> (option) The following operation is used for output hold with external signals.

1. Operation

ON OFF

External signal

Output hold

2. Operation method By putting 5V DC between the 1st component input/output terminals 17 and 20 (“+” and “-”),

only the component preset by the front key will be operated. Note 1: The indication during operation is the same as that of hold calibration. Note 2: This function is effective only when alarm, remote range or range detect function is

used as an option. (When using the supplied function, be sure to contact Fuji because the hardware is different.)

Note 3: This function is effective only for the standard type No. 1 and 2 range analyzers and

flow differential type.

Page 38

t Remote range setting (option)

This is used for selecting the range via an external signal. This setting should be OFF when remote range is not

used. Press the FUNC key in the measuring status and

“

” will be indicated.

The RMT RANGE LED of the function indicating lamp will flash.

Press the

key and the remote range function is

settable. The sub indication will flash. Select the remote range “

” or “ ” by pressing the

key. The setting is valid for all the components. Press the ENT key when the remote range setting is

finished. Setting operation is now completed.

FUNC

RMT RANGE

＞

∧

When the remote range function is set ON, the RMT RANGE LED of the function indicating lamps will remain lit, and the

keys will be unusable for range

selection.

• By inputting 5V DC between the remote input terminals ⑬ and ⑭ , the No. 1 range is selected.

• No. 2 range is selected when 5V DC input is not applied to the remote input terminals ⑬ and ⑭ .

ENT

Page 39

;

; ;

;

;;;;;;;;;;;;

;

;;;;;;;;;;;;

;

y Auto calibration (option)

As an option with this analyzer, the signals from the input/output terminals on the rear panel can be used for driving an external solenoid valve and introducing standard gas, whereby zero point and span can be calibrated automatically.

The auto calibration is done according to ⑥ -1 current time setting, ⑥ -2 Auto calibration start time, ⑥ -3 Auto calibration cycle, ⑥ -4 Calibration gas flow time, ⑥ -5 Calibration gas flow mode, and ⑥ -6 Auto calibration ON/OFF setting.

Caution on operation

1. When the auto calibration start time is reached during key operation, the auto calibration is given priority and is started. All key operation will be invalid until the auto calibration is finished.

To forcibly interrupt the auto calibration in progress, press both the ENT and CAL keys

2. simultaneously. After the forcible interrupt, the measuring mode is resumed and all the keys are operable. Although the current auto calibration will be passed over, it will be started from the initially set cycle from the next time onward.

Example: When auto calibration is set for 3 hour intervals starting from 8:00 a.m.

8:00

;;;;;;;;;;

11:00 14:00 17:00

;;;;;;;;;;;

;;;;;;;;;;

;;;;;;;

: Under auto calibration

8:00

;;;;;;;;;;

11:00 14:00 17:00

;;;

;;;;;;;;;;;

;;;;;;;;;;

Manual interruption

3. Key operation is possible while calibration is not under way with the auto calibration function set. Therefore all settings (of span, hold, remote range, time, etc.) including manual calibration can be made. But note that if the wrong time is set on the clock, the auto calibration will not be started at the correct time.

4. Auto calibration is able to start by applying remote start signal, 5V DC longer than 100m sec, to remote start input terminals. In this case, auto calibration will start independent of its ON/OFF setting.

Page 40

;

;;;

;

Gas flow time

;

Auto calibration gas flow time

Example where auto calibration gas flow mode 5 is set

Auto calibration start time Auto calibration end time

Under

Under mesurement

Under auto calibration

Zero gas

Span

gas 1

Span

gas 2

Span

gas 3

Substitution

TTTTT

T: Settable from 100 to 599 sec

mesurement

Next process

;;;;;;;;;;;;;;;;;;;;;

Gases introduced:

Sample gas

Zero gas

Span gas 1

Span gas 2

Span gas 3

Indicator lamps

AUTO CAL.

ZERO

SPAN

CAL

HOLD (At HOLD ON）

;;;;;;;;;;;;;;;;;;;;

Auto calibration cycle

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;

Flashes

;

Lights

;

Lights

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Flashes

;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Lights Lights Lights

;

Lights

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

Auto calibration abnormality: If an abnormality occurs during auto calibration, a contact signal for auto calibration abnormality will be outputted from the input/output terminals on the rear of the analyzer. The gas which incurred the abnormality will not be calibrated, and the next component will be calibrated instead .

Page 41

y-1 Current time setting

Set the current time and day of the week. Press the FUNC key in the measuring status. The AUTO CAL LED of the function indicating lamps

will flash.

FUNC

SU TU TH

MO WE FR

The main indication shows the hour and minute via a 24-hour indication and the decimal point flashes.

bar lights up at the relevant weekday on the

A sub indication.

Indication SU MO TU WE TH FR SA Day Sun Mon Tue Wed Thu Fri Sat

Press the

key and the time is now settable. The

highest two digits of the main indication will flash. The numeric value is incremented by pressing the

key. Press the

After the time setting, press

key and the digit can be selected.

key and the day is

settable on the sub indication. The bar indication will flash. Press the

key and the bar will shift.

Press the ENT key when the time and day setting is finished. The data is stored in memory.

Flashes

＞

＞

ENT

∧

SU TU TH

MO WE FR

)(

∧

SU TU TH

MO WE FR

SU TU TH

MO WE FR

＞

)(

AUTO CAL

Time starts from the point where ENT key is pressed.

Page 42

y-2 Auto calibration start time setting

When FUNC key is pressed at the current time indication, the auto calibration start time and day will appear on the main and sub indications. The AUTO CAL LED of the function indicating lamps will flash. In the case of start time, the decimal point on the main indication will light steadily.

Press the

key and the auto calibration start time is

settable, so set a start time on the main indication. The numeric value is incremented by pressing the

key. Press the After setting the calibration start time, press the

key and the digit can be selected.

key and the calibration start day can be set on the sub indication. The bar indication will flash.

Press the

key and the bar will shift.

The auto calibration start time is settable up to one week ahead.

When the auto calibration start time and day have been set, press the ENT key.

The data is stored in memory.

Flashes

FUNC

＞

＞

ENT

SU TU TH

MO WE FR

SU TU TH

MO WE FR

∧

SU TU TH

MO WE FR

)(

∧

SU TU TH

MO WE FR

SU TU TH

MO WE FR

＞

AUTO C

)(

When the auto calibration at the set time is finished, the next auto calibration start time will be set automatically.

To confirm the next auto calibration start time, then carry out this operation and check the indication.

Note: When the auto calibration start time has been set, then set the auto calibration cycle.

Page 43

y-3 Auto calibration cycle setting

The calibration cycle is settable in either ‘days’ or ‘hours’. Press the FUNC key at the calibration start time indica-

tion and “

” will appear.

The AUTO CAL LED of the function indicating lamps will flash.

Press the

key and the auto calibration cycle is

settable. The highest digit on the sub indication will flash. Select either ‘days’ or ‘hours’ by pressing the

” appears on the sub indication when selecting

“ ‘days’ and “

Press the

” appears when selecting ‘hours’.

key and the calibration cycle can be set in

the lower digits of the sub indication. The numeric value is incremented by pressing the

key. Press the

key and the digit can be selected.

key.

FUNC

（）

＞

＞（）

∧

＞

AUTO CAL

Day is settable in a range of 1 to 7 days. Hour is

ENT

settable in a range of 1 to 99 hours.

CAUTIONS

” (hours) is set, it will be automatically set to

If “

” (hour).

“

Press the ENT key when the calibration cycle has been set. The data is stored in memory.

Note:When the auto calibration start time has been set, then set the auto calibration gas flow time.

Page 44

y-4 Calibration gas flow time setting

Press the FUNC key at the calibration cycle indication and “

” will appear.

The AUTO CAL LED of the function indicating lamps will flash.

Press the

key and the auto calibration gas flow time

is settable. Set the flow time on the sub indication. The numeric value is incremented by pressing the

key. Press the

key and the digit can be selected.

FUNC

AUTO CAL

＞（）

∧

＞

The setting range is 100 to 599 seconds.

Press the ENT key when the calibration gas flow time has been set. The data is stored in memory.

The times set in this mode is common to all the cali-

ENT

bration gas flow time including replacement time.

Note: When the auto calibration start time has been set, set the auto calibration gas flow mode.

Page 45

y-5 Calibration gas flow mode setting

Select a calibration gas flow mode according to the number of components to be calibrated.

Press the FUNC key at the calibration gas flow time indication and “

” will appear.

The AUTO CAL LED of the function indicating lamps will flash.

Press the

key and the auto calibration gas flow time is

settable. Set the calibration gas flow mode No. by pressing the

key. (See the table below for the meaning of the flow mode

No.) Press the ENT key when the calibration gas flow mode

has been set. The data is stored in memory.

FUNC

＞（）

ENT

∧

AUTO CAL

Meaning of flow modes

Mode no. 1: Zero gas Mode no. 2: Zero gas — 1st component

span gas

Mode no. 3: Zero gas — 1st component — 2nd component

span gas span gas

Mode no. 4: Zero gas — 1st component — 2nd component

span gas span gas (O

)

Mode no. 5: Zero gas — 1st components— 2nd component — 3rd component

span gas span gas span gas (O

)

Note: When all the settings for auto calibration have been finished, then select whether or not to

carry out auto calibration.

Page 46

y-6 Auto calibration ON/OFF setting

Select whether or not to carry out auto calibration. Set to “

” when calibration will not be made.

Press the FUNC key at the calibration gas flow mode indication and “

” will be appear.

The AUTO CAL LED of the function indicating lamps will flash.

Press the

key and auto calibration ON or OFF can be

set.

Select either “ pressing the

” or “ ” on the sub indication by

key.

When the auto calibration ON/OFF setting is finished, press the ENT key.

Setting operation is now completed.

FUNC

AUTO CAL

＞

∧

ENT

Page 47

u Key lock ON/OFF setting

This function is intended to prevent erroneous key operation. By pressing the key lock at “ ” keys other than the

FUNC key will be inoperable. To release the function, set at “

”.

FUNC

Press the FUNC key in the measuring status and “ ”

will be indicated.

Now press the

key and the key lock can be set.

＞

The sub indication will flash.

Set the key lock ON or OFF by pressing the key.

∧

Press the ENT key when the key lock setting is finished. Setting operation is now completed.

ENT

Note: When the key lock is set at “ ” keys other than the FUNC key are inoperable.

Page 48

i Zero calibration

This is used for adjusting the zero point. Flow the zero gas and wait until the indication stabilizes.

When the Zirconia O

analyzer is used, use air as the zero

gas. Note1) When the indication has stabilized, select the measuring

range to be calibrated by using the

keys.

ZERO

When using a multi-component analyzer, undergo zero calibration at the selected range and component.

Note 2)

Press the

ZERO

After the indication is stabilized, press the

key, and

ZERO

key lamp will flash.

CAL

key

and conduct zero calibration. The

CAL

key lamp lights steadily during calibration.

The calibration is completed when the key lamp goes off. After the calibration, it is reset in measurement mode. Calibrate other ranges as necessary.

CAUTIONS

Density below zero (indicated by a minus symbol) is displayed as zero. This function is released by pressing

ZERO

key.

Flashes

CALSPANZEROENT

CAL

Lights steadily

CALSPANZEROENT

(The lamp goes off after calibration)

Note 1: When using gas separately for low and high ranges, apply 9 to 10 vol% O

which has

2/N2

been set for low range. Note 2: Calibration component should be set in zero calibration select mode. Note 3: After zero calibration, change the range (2-range meter only) to confirm zero point of both

ranges being calibrated. When the indication of each range is not “Zero”, set S.CAL mode

to “0” and calibrate the zero point once again.

After it is calibrated, set S.CAL mode to “1”.

Page 49

o Span calibration

Carry out span calibration by flowing calibration gas at the concentration set as a span value.

Flow the calibration gas at 0.5 r/minute. Wait until the indication stabilizes, and then conduct span

calibration. Press the

SPAN

key and the

SPAN

key lamp flashes.

SPAN

In the case of multi-component analyzer, the main indication will flash for the components which can be calibrated.

Press the COMP key and the calibratable gas component will change.

When the gas component has been determined, press

keys to select a range.

the

Note: The lamp will not flash in the case of a

single-component analyzer.

After the indication is stabilized, press the

CAL

key

and conduct span calibration. The

CAL

key lamp lights steadily during calibration. The calibration is completed when key lamp goes off. Since the measuring status is resumed after calibration,

continue the calibration for each component and each range.

（）

Flashes

CALSPANZEROENT

COMP

Flashes

CALSPANZEROENT

(In case of multicomponent analyzer)

CAL

Light steadily

CALSPANZEROENT

(The lamp goes off after calibration)

CAUTIONS

Density below zero point (indicated by a minus symbol) is displayed as zero. This function is released by pressing

Note 1: When a zirconia O

meter is used and zero point is calibrated by 9-10 vol % O2 for the low

SPAN

range, the zero and span calibrations interfere with each other. Therefore, each should be calibrated a few times repeatedly.

Note 2: After span is calibrated, change the range (2-range meter only) to check the error or indica-

tion of each range. If it is large, set S.CAL mode to “0” and calibrate the span once again. After it is calibrated, set S.CAL to “1”.

key.

Page 50

6. MAINTENANCE MODE

This mode should be used only for maintenance, inspection, repair or adjustment. When operation for maintenance mode is required, contact our office in advance.

The maintenance mode refers to setting and adjustment in the following five modes.

• Response time setting mode (Refer to ① ) conversion reference value setting mode (option) (Refer to ② )

• O

• Optical balance adjustment mode (Refer to ③ )

• Interference compensation coefficient setting mode (Refer to ④ )

• Indication and clearing of drift amount integrated value (Refer to ⑤ )

＞

ENT

CAL

FUNC

Response time setting mode

1. When O setting mode is not available.

display, conversion function is not provided, O2 conversion reference value

ENT

CAL

ENT

CAL

ENT

Cautions on operation

FUNC

O2 conversion reference value setting mode

FUNC

Optical balance adjustment mode

FUNC

Interference compensation coefficient setting mode

FUNC

Clearing of drift amount integrated value

Measurement mode

By pressing CAL key in the response time setting mode, the display is changed for optional balance adjustment.

When any setting is finished, be sure to press ENT key. If another key is pressed without pressing ENT key, the numerical value which has been

set is not registered.

After ENT key is pressed, “ ” display lamp lights up.

Page 51

6.1 Response time setting

Press CAL key while “ ” display lamp is flickering, and “ lamp flickers.

Press COMP key to select desired setting component.

Next, set the response time of the electric system. Numerical value (1-199, O

displayed by the flicker of sub display lamp. 90% response time (electric system) ·=. 0.22 × (1-199)

sec.

” will be displayed. At this time, the sub display

: 1-49) is set from the top digit

CAL

∧

（ ）

＞

Numerical value increases by pressing Digits are selected by pressing

After setting the response time, press ENT key.

key.

6.2 O2 conversion reference value setting

With the “ ” indication flashing, press the CAL key and “

The sub indication now flashes. Set a reference value (1 to 19) %O

Press the Press ENT key after setting a reference value.

” will be indicated.

key and the numeric will be incremented.

converted concentration

21 - Set value

(

21 - O

concentration

Note

× NOx concentration

(

ENT

CAL

∧

（ ）

Note: The maximum value to calculation is 4 .

ENT

Page 52

6.3 Optical balance adjustment

When the sample cell is reassembled after having been detached for cleaning or the like, this optical zero adjustment should be performed before use.

When this mode is assumed, the input signal from the measurement detector is displayed on the main indicator while the input signal from the interference compensating detector is displayed on the sub indicator.

The numerics vary in a range of -999 to 3200. This adjustment is made so that the readings on both indicators approach zero. Refer to

section 7.2.3 “Optical zero adjustment method” for details.

With the “ ” indication flashing, press the CAL key and the input signal from the measurement detector will appear on the main indicator while the input signal from the interference compensating detector will appear on the sub indicator.

Press the CAL key after the optical balance adjustment.

CAL

CAUTIONS

A mistake in this adjustment will cause problems in measurement.

Page 53

6.4 Interference compensation coefficient setting

This is used for adjusting the interference compensation when there is much interference. In this mode, adjust so that an indicated value is within 2% of gas concentration of full scale while flowing interference gas (0°C or 2°C saturated H ence compensation adjusting method” for details.

With the “ ” indication flashing, press the CAL key and “

” will be indicated. Main display lamp “ ”

flickers. (The compensation coefficient is the lower two digit on

the main indicator and a value within -32768 to 32768 on the sub indicator.)

(The lower 2nd digit of main display is negative symbol.)

Press the COMP key to select the desired component.

Set the compensation coefficient. Press the Press the

key and the numeric will be incremented. key and the numeric will be decremented.

Press ENT key after setting the compensation coefficient.

O). Refer to section 7.2.4 “Interfer-

CAL

＞

∧

（ ）

ENT

Note) In case the sub indication is a “–” one, the device

operates reversely.

CAUTIONS

A mistake in this adjustment will cause problems in measurement.

Page 54

6.5 Indication and clearing of integrated drift value

When the “ ” indication flashing, press the CAL key and indicate the zero point drift amount on the main indicator and the span point drift amount on the sub indicator for each component.

Select the range with the

keys and the integrated zero point and span point drift values will be indicated for that range. (The indication is a % indication of gas concentration of full scale.)

When the integrated drift value appears, press the FUNC key and the measurement mode will be resumed.

Range value

CAL

（）

Integrated zero drift value

Integrated span drift value

ENT

FUNC

Zero clearing

Carrying out zero clearing after cleaning the sample cell when the integrated drift value appears on the indicator, press the ENT key and the integrated zero point and span point drift values will be cleared to zero for each component and each range. The indicator will then display “

”.

Page 55

7. MAINTENANCE

• When the inner case needs to open for adjustment of the optical system, etc., the inside of the analyzer and the measuring gas line should be purged completely with zero gas to avoid poisoning, fire or explosion due to gas leaks.

• Before working, take off a wrist watch, finger ring or the like metallic accessories. And never touch the instrument with a wet hand, Otherwise, you will have a shock hazard.

• Do not use a replacement part other than specified by the instrument maker. Otherwise, adequate performance will not be provided. Besides, an accident or fault may be caused.

• Replacement parts such as a maintenance part should be disposed of as incombustibles.

7.1 Routine maintenance

DANGER

CAUTIONS

(1) Zero and span calibration

① Carry out zero calibration with reference to the method in section 5.2. ② Next carry out span calibration with reference to the method in section 5.2. ③ Zero and span calibration should be made about once a week or when necessary.

(2) Check of flow rate

① The flow rates for sample gas, standard gas and purge gas are as follows.

• Sample gas and standard gas flow rates

Standard type analyzer 0.5±0.25r/minute (sample gas) Sample switching type (1r+1r)±0.1r/minute (Sample gas + reference gas) Flow differential type (0.5r+0.5r)±0.25r/minute (Sample gas + reference gas)

• Purge gas flow rate: about 1r/minute

② Inspection and maintenance should be carried out about once a day or as necessary.

Page 56

7.2 Periodical inspection

7.2.1 How to clean sample cell (pipe cell)

This instrument has been carefully adjusted before shipment from the factory. If it should require readjustment, then please contact Fuji.

(1) Turn off the power switch, stop the flow of

sample gas and flow zero gas for a few minutes.

Loosen the knurled knobs on the front panel and pull out the analyzer interior by means of the grips.

(2) Loosen the cap nuts fixing the gas inlet

pipe, and detach the internal gas inlet pipe.

(3) Remove the screws from the left and right

cell retaining places.

• In the case of the sample switching type, remove both the sample and reference cells.

• With the standard type, remove only the sample cell.

Knurled knob

Power switch

Knurled knob

Screw

Cell retaining plate

Cap nut fixing gas inlet pipe

Screw

Reference cell



Sample cell

Cell retaining plate

Cap nut fixing gas inlet pipe

(4) Turn the retaining ring (with transparent

window) to the left and remove it from the cell. Refer to Fig. 7-1.

(5) For cleaning the infrared-ray transmitted

window and cell interior, first remove heavy contamination with a soft brush or the like, then wipe lightly with a soft cloth.

Be especially careful when cleaning the window since it is easily scratched.

O ring

Retaining ring

(6) When cleaning of the sample cell is finished, then reassemble the cell in its original position.

If the zero point has deviated considerably when operating again, select a low range and carry out optical zero adjustment (refer to item 7.2.3).

Also, the drift integrated value should be cleared (see Item 6 ⑤ ).

CAUTIONS

If the infrared-ray transmitting window is only lightly contaminated, it can be cleaned by wiping lightly with the soft cloth to which chrome oxide powder is added. But if heavily contaminated, the window must be replaced.

Be careful not to apply unreasonable force when cleaning.

Page 57

7.2.2 How to clean sample cell (block cell)

(1) Turn off the power switch, stop the flow of

sample gas and flow zero gas for a few minutes.

Loosen the knurled knobs on the front panel and pull out the analyzer interior by means of the grips.

Knurled knob

Power switch

Knurled knob

(2) Loosen the cap nuts fixing the gas inlet

Cap nut fixing gas inlet pipe

pipe and remove the internal gas inlet pipe.

(3) Remove two detector

Note: Be careful since the distribution and

block cells are fixed together with the detector.

Detector fixing screws

(4) Using the furnished cell assembly tool, turn

the retaining ring leftward and detach it from the cell.

Refer to Fig. 7-2.

Retaining ring

Infrared-ray transmitting window

Inner O ring

Outer O ring

O ring retainer

(5) For cleaning the infrared-ray transmitting window and cell interior, first remove heavy con-

tamination with a soft brush or the like, then wipe lightly with a soft cloth. Be especially careful when cleaning the window since it is easily scratched.

(6) When cleaning of the sample cell is finished, then reassemble the cell in its original position.

If the zero point has deviated considerably when operating again, select a low range and carry out optical zero adjustment (refer to item 7.2.3).

Also, the drift integrated value should be cleared (see Item 6. ⑤ ).

CAUTIONS

Be careful not to apply unreasonable force when cleaning.

Page 58



Infrared-ray transmitting window

Retaining ring

O ring

Sample gas inlet

Call

Gas inlet pipe fixing screw

Cap unt

Sample gas outlet

The infrared-ray transmitting window and retaining ring are attached with an adhesive.

Fig. 7-1 Sample cell structure

Page 59

Use the exclusive cells assembling tool (furnished).

Cell assembling tool

Retaining ring

O ring retainer

Outer O ring Inner O ring Infrared-ray transmitting window

Sample cell section

Sample cell structure (for cells with length of 32, 16, 8, 4, 2mm)

Sample gas inletSample gas outlet

Reference cell section

Bolt hole (for bolt which fastens together distribution cell and detector)

(The sample cell and reference cell are integral.)

Fig. 7-2 Sample cell structure (block cell)

Page 60

7.2.3 Optical zero adjustment method (Optical balance method)

When the sample cell is reassembled after having been removed for cleaning or the like, this adjustment should be carried out before use. Following is the adjustment procedure.

(1) First carry out electrical zero adjustment.

With the power turned off, detach the connectors CN2 and 3 (for 1st component) and CN4 and 5 (for 2nd component) leading from the detector which are connected with the main PCB (2).

Next, turn on the power and calibrate the zero point using ZERO and CAL keys.

(2) Turn off power, connect the connectors CN2 and 3 (1st component) and CN4 and 5 (2nd

component), and turn on power again. Supply dry nitrogen from the sample gas inlet and wait until the indication stabilizes.

(3) Set up the optical zero adjustment mode as

in 6-3. The following indications will

appear on the main and sub indicators of the analyzer front panel.

Main indicator: Input signal from measurement detector

(4) Operate the optical zero adjusting knob so

that the numeric value on the main indicator approaches zero (within ±10).

Optical zero adjusting knob

Sub indicator: Input signal from interference compensating detector

(5) Operate the dimmer plate so that the

numeric value on the sub indicator approaches zero.

Dimmer plate

(6) Repeat steps (4) and (5) to bring the numeric values on the main and sub indicators as close to

zero as possible.

CAUTIONS

A mistake in this adjustment will cause problems in measurement.

Page 61

7.2.4 Interference compensation adjusting method

Since this adjustment requires highly trained technique, please contact Fuji if it becomes necessary.

Adjust the interference compensation if the effect of interference is large (more than ±2%FS of full scale).

1) In case standard type and flow differential type systems

(1) After warming up the instrument, supply

dry nitrogen at a rate of 0.5r/minute from the sample gas inlet.

(With the flow differential system, supply dry nitrogen continually to the reference cell.)

(2) After indication is stabilized, carry out zero

calibration using the ZERO and CAL keys.

Dry nitrogen 0.5r/min.

CAL

(3) Set up the interference compensation

setting mode as in section 6-4.

” will appear in the upper two digits of

“

the main indicator on the front panel while a total of 5 numerals will appear in the lower digit of the main indicator plus the four digits of the sub indicator.

(A negative sign appears in the second lowest digit of the main indicator.)

(4) Feed interference gas (saturated H

0°C or 2°C) as illustrated. When the indication is stabilized, press COMP key and select the component to be adjusted, then adjust it until the indicated value becomes almost 0 within 2% of the full scale, using

key and key.

(5) After the adjustment is finished, press

ENT key to record the data in memory.

O at

COMP

＞

∧

Bubbler Cold water or

Water

electronic cooler

Measured gas inlet: 0 or 2℃ saturated H

Page 62

2) In case of sample switching system

(1) After warming up the instrument, supply

dry nitrogen at a rate of 1r/minute from the measured gas inlet.

Detach the pipe from the reference cell gas inlet (light source side) and flow dry nitrogen at 1r/minute.

Carry out zero calibration using the ZERO

(2)

and CAL keys.

(3) Set up the interference compensation

setting mode as in section 6-4. “ appear in the upper two digits of the main indicator on the front panel while a total of 5 numerals will appear in the lower digit of the main indicator plus the four digits of the sub indicator.

(A negative sign appears in the second lowest digit of the main indicator.)

” will

Dry nitrogen 1r/min.

CAL

＞

∧

(4) Supply interference gas (0°C or 2°C

saturated H

O) as shown in the figure.

When the indication has stabilized, adjust by using the

and keys so that the

indicated value approaches zero or within 2% of the value obtained by driving 30,000 by the range ratio.

When range ratio is 1 : 5 (low range : high range)

30,000 ×

× 0.02 = 120

Adjust to obtain a value of nearly zero within ±120.

(5) Return the reference cell pipe to its original

position.

Water

Bubbler Cold water or

electronic cooler

Measured gas inlet: 0 or 2℃ saturated H

Page 63

8. ERROR CODES AND REMEDIES

CAUTIONS

• If the cause of any fault cannot be determined despite reference to the instruction manual, be sure to contact your dealer or Fuji Electric’s technician in charge of adjustment. If the instrument is disassembled carelessly, you may have a shock hazard or injury.

• If the fuse is blown, eliminate the cause, and then replace it with the one of the same capacity and type as before. Otherwise, shock hazard or fault may be caused.

This analyzer is provided with self-diagnosis function, and an error code is displayed if an abnormality occurs in the instrument.

Carry out the following remedies when an error code appears.

• When an error code appears, first check for an abnormality in the power supply or gas piping.

• The analyzer will not operate correctly unless the cause of the error is removed. But, the error

indication remains as it is as a history until the ENT key is pressed.

Page 64

Error codes and countermeasures

Error code

E-0

E-1

E-3

E-4

E-6

E-8

E-5

E-7

E-9

E-10

E-11

E-16

E-23

Contents of error code

Trouble with digital circuit (memory read/ write impossible)

Trouble with digital circuit (output ic read/ write impossible)

Synchronizing signal has stopped.

Zero point calibration is out of the calibration range.

Integrated drift of zero point exceeds 50%/FS of each measurement range.

One-time zero point calibration exceeds 50%/FS of measurement range.

Span point calibration is out of calibration range.

Integrated drift of span point exceeds 50%/FS of measurement range.

One-time span point calibration exceeds 50%/FS of measurement range.

Zero calibration is impossible due to unstable input.

Span calibration is impossible due to unstable input.

O2 input signal is low.

O2 input signal is over.

State of analyzer

Not operated until trouble is removed.

• Both the indicated value and output value have stopped.

• LED stops flickering at each setting.

Measurement is possible but zero calibration is impossible.

Measurement is possible but calibration is impossible.

Measurement is possible but span calibration is impossible.

Measurement value of O

analyzer is

different from density.

Cause

• Malfunction due to noise

• Digital circuit is defective.

• Improper adjustment of synchronizing signal

• Improper rotation of motor and chopper

• Synchronizing signal process circuit is defective.

• Instantaneous power failure

• Improper zero gas

• Unbalance of optical

system

• Optical system parts are defective.

• Improper setting of calibration set value and cylinder

• Unbalance of optical system

• Optical system parts are defective.

• Abnormal sampling system (improper gas flow)

• Defective sensor

• Effect of vibration

• O2 sensor is defective.

• Input circuit is defective.

Check and countermeasure

• Turn ON the power supply. When the analyzer operates correctly, it is considered normal.

• Replace the main printed circuit board.

• Adjust synchronizing signal on main printed circuit board 2. (CP1 - CS. VR1)

• Check motor and chopper for proper rotation.

•

Check connector for proper connection.

• Replace main printed circuit board 2.

• Check gas components and dew points.

• Check sampling system.

• Check the inside of cell for

contamination.

• Adjust the balance of optical system.

• Replace light source.

• Replace sensor.

• Check calibration set value and

cylinder.

• Check sampling system.

• Check the inside of cell for

contamination.

• Adjust the balance of optical system.

• Replace light source.

• Replace sensor.

• Check piping connection and

gas flow.

• Replace sensor.

• Check wiring and connector.

• Check operating conditions and

carry out vibration-proofing.

• Check O2 sensor output voltage

• Check wiring and connector.

E-17

E-24

1. Error code appears at the sub indication in the case of a single-component analyzer, and at the 2nd component sub indication in the case of multi-component analyzer.

2. When multiple errors have occurred, the error codes appear successively starting from the lowest numbered one upon pressing ENT key.

After displaying all the error codes, press ENT key again and the error display disappears, but they will reappear if the fault is not removed.

3. Turn ON the power supply. When the analyzer operates correctly, it is considered normal.

4. When an error occurs, the FAULT contact output is conductive.

Temperature sensor input signal is low.

Temperature sensor input signal is over.

Measurement error due to ambient temperature may become large.

• Temperature sensor is defective.

• Temperature circuit is defective.

• Check resistance of TMP 1 on printing circuit board 2.

Fuji Electric ZRF Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

PREFACE

SAFETY PRECAUTION

CAUTIONS ON USE

CONTENTS

1. OUTLINE

2. NAME AND DESCRIPTION OF EACH COMPONENT

2.1 Name and description of each component on case

2.2 Name and description of components on indication/operation panel

3. INSTALLATION

3.1 Mounting method

3.2 Piping method

3.3 Sampling

3.4 Wiring method

4. OPERATION

4.1 Operation procedure

4.2 Preparation for operation

4.3 Start of measurement

4.4 Shutdown

5. OPERATION OF INDICATION/OPERATION PANEL

5.1 Outline of indication/operation panel

5.2 General operation

6. MAINTENANCE MODE

6.1 Response time setting

6.2 O2 conversion reference value setting

6.3 Optical balance adjustment

6.4 Interference compensation coefficient setting

6.5 Indication and clearing of integrated drift value

7. MAINTENANCE

7.1 Routine maintenance

7.2 Periodical inspection

8. ERROR CODES AND REMEDIES