YOKOGAWA Vigilantplant IR200 User manual

User's
Manual
IM 11G02M01-01E
IM 11G02M01-01E
3rd Edition
IR200
Infrared Gas Analyzer

iIM 11G02M01-01E
We are grateful for your purchase of Yokogawa’s Infrared Gas Analyzer (Model : IR200).
• First read this instruction manual carefully until an adequate understanding is acquired, and
then proceed to installation, operation and maintenance of the analyzer. Wrong handling
may cause an accident or injury.
• The specifications of this analyzer are subject to change without prior notice for further
product improvement.
• Modification of this analyzer is strictly prohibited unless a written approval is obtained
from the manufacturer. Yokogawa will not bear any responsibility for a trouble caused by
such a modification.
• This instruction manual shall be stored by the person who actually uses the analyzer.
• After reading the manual, be sure to store it at a place easier to access.
• This instruction manual should be delivered to the end user without fail.
Manufacturer: Yokogawa Electric Corporation.
Type: Described in Yokogawa’s company nameplate on main frame
Date of manufacture: Described in Yokogawa’s company nameplate on main frame
Product nationality: Japan
PREFACE
Request
• It is prohibited to transfer part or all of this manual without
Yokogawa’s permission.
• Description in this manual is subject to change without prior
notice for further improvement.

ii IM 11G02M01-01E
Caution on installation and transport of gas analyzer
• 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.
• For installation, observe the rule on it given in the instruction
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. Other-
wise, the casing may be separated and fall to cause an injury.
• During installation work, care should be taken to keep the unit
free from cable chips or other foreign objects. Otherwise, it
may cause fire, trouble or malfunction of the unit.
DANGER
CAUTION
CAUTION ON SAFETY
First of all, read this “Caution on safety” 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 in 3 levels, “DANGER”, “CAUTION” and
“PROHIBITION”.
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.
Items which must not be done are noted.
DANGER
CAUTION
PROHIBITION

iiiIM 11G02M01-01E
Caution on piping
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 atmo-
spheric 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
Caution on wiring
• Wiring work must be performed with the main power set to
OFF to prevent electric shocks.
• Enforce construction of class-D 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.
• Be sure to use a power supply of correct rating. Connection of
power supply of incorrect rating may cause fire.
DANGER
Caution on use
• For correct handling of calibration gas or other reference gases,
carefully read their instruction manuals beforehand. Otherwise,
carbon monoxide or other hazardous gases may cause an intoxi-
cation particularly.
• Before leaving unused for a long time or restarting after left at
such a status for an extended length of time, follow the directions
of each instruction manual because they are different from
normal starting or shutdown. Otherwise, the performance may
be poor and accidents or injuries may be caused.
• Do not operate the analyzer for a long time with its door left
open. Otherwise, dust, foreign matter, etc. may stick on internal
walls, thereby causing faults.
DANGER
CAUTION

iv IM 11G02M01-01E
PROHIBITION
DANGER
Caution on maintenance and check
• When doors are open during maintenance or inspection, 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 leak.
Be sure to observe the following for safe operation avoiding
the shock hazard and injury.
• Remove the watch and other metallic objects before work.
• Do not touch the instrument wet-handed.
• If the fuse is blown, eliminate the cause, and then replace it
with the one of the same capacity and type as before. Other-
wise, shock hazard or fault may be caused.
• 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. For details, follow the local
ordinance.
CAUTION
Others
• 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.
CAUTION
Caution on use
• Do not allow metal, finger or others to touch the input/output
terminals in the instrument. Otherwise, shock hazard or injury
may occur.
• Do not smoke nor use a flame near the gas analyzer. Otherwise,
a fire may be caused.
• Do not allow water to go into the gas analyzer. Otherwise,
hazard shock or fire in the instrument may be caused.

vIM 11G02M01-01E
rAfter - Sales Warranty
dDo not modify the product.
dDuring the warranty period, for repair under warranty carry or send the product to
the local sales representative or service office. Yokogawa will replace or repair any
damaged parts and return the product to you.
dBefore returning a product for repair under warranty, provide us with the model
name and serial number and a description of the problem. Any diagrams or data
explaining the problem would also be appreciated.
dIf we replace the product with a new one, we won’t provide you with a repair report.
dYokogawa warrants the product for the period stated in the pre-purchase quotation.
Yokogawa shall conduct defined warranty service based on its standard. When the
customer site is located outside of the service area, a fee for dispatching the
maintenance engineer will be charged to the customer.
dIn the following cases, customer will be charged repair fee regardless of warranty
period.
• Failure of components which are out of scope of warranty stated in instruction
manual.
• Failure caused by usage of software, hardware or auxiliary equipment, which
Yokogawa did not supply.
• Failure due to improper or insufficient maintenance by user.
• Failure due to misoperation, misuse or modification which Yokogawa does not
authorize.
• Failure due to power supply (voltage, frequency) being outside specifications or
abnormal.
• Failure caused by any usage out of scope of recommended usage
• Any damage from fire, earthquake, a storm and flood, lightning, disturbance, riot,
warfare, radiation and other natural changes.
dYokogawa does not warrant conformance with the specific application at the user
site. Yokogawa will not bear direct/indirect responsibility for damage due to a
specific application.
dYokogawa will not bear responsibility when the user configures the product into
systems or resells the product.
dMaintenance service and supplying repair parts will be covered for five years after
the production ends. For repair this product, please contact the nearest sales office
described in this instruction manual.

vi IM 11G02M01-01E
CONTENTS
PREFACE.............................................................................................................................. i
CAUTION ON SAFETY .................................................................................................... ii
rAfter - Sales Warranty ................................................................................................... v
1. OVERVIEW ................................................................................................................. 1-1
2. NAME AND DESCRIPTION OF EACH PART .....................................................2-1
2.1 Description of each unit.................................................................................. 2-1
3. INSTALLATION ......................................................................................................... 3-1
3.1 Selection of installation location..................................................................... 3-1
3.2 Installation of analyzer.................................................................................... 3-2
3.3 Piping............................................................................................................... 3-2
3.4 Sampling.......................................................................................................... 3-3
3.5 Wiring method ................................................................................................ 3-6
4. OPERATION ............................................................................................................... 4-1
4.1 Preparation for operation ................................................................................ 4-1
4.2 Warm-up operation and regular operation...................................................... 4-1
5. DESCRIPTION OF DISPLAY AND OPERATION PANELS .............................. 5-1
5.1 Name and description of operation panel....................................................... 5-1
5.2 Overview of display and operation panel....................................................... 5-2
5.3 Overview of display screen............................................................................. 5-3
5.4 General operation ............................................................................................ 5-6
6. SETTING AND CALIBRATION ..............................................................................6-1
6.1 Changeover of range ....................................................................................... 6-1
6.2 Calibration setting ........................................................................................... 6-2
6.2.1 Setting of calibration concentration ........................................................ 6-2
6.2.2 Setting of calibration gas......................................................................... 6-4
6.2.3 Setting of manual zero calibration .......................................................... 6-6
6.2.4 Setting of calibration range ..................................................................... 6-8
6.2.5 Setting of auto-calibration component .................................................. 6-10
6.3 Alarm setting ................................................................................................. 6-12
6.3.1 Setting of alarm values.......................................................................... 6-12
6.3.2 Hysteresis setting................................................................................... 6-14
6.4 Setting of auto calibration............................................................................. 6-15
6.4.1 Auto calibration ..................................................................................... 6-15
6.4.2 Forced stop of auto calibration ............................................................. 6-17
6.5 Setting of auto zero calibration..................................................................... 6-19
6.5.1 Auto zero calibration ............................................................................. 6-19
6.5.2 Forced stop of auto zero calibration ..................................................... 6-21
6.6 Peak alarm setting ......................................................................................... 6-23
6.7 Parameter setting ........................................................................................... 6-25
6.8 Maintenance mode ........................................................................................ 6-29
6.9 Calibration ..................................................................................................... 6-32
6.9.1 Zero calibration ..................................................................................... 6-32
6.9.2 Span calibration ..................................................................................... 6-33

viiIM 11G02M01-01E
7. MAINTENANCE ......................................................................................................... 7-1
7.1 Daily check...................................................................................................... 7-1
7.2 Daily check and maintenance procedures ...................................................... 7-1
7.3 Replacement of power fuse............................................................................. 7-2
7.4 Moisture interference compensation adjustment ............................................ 7-3
7.5 Cleaning of measuring cell ............................................................................. 7-4
7.5.1 Disassembly and assembly of measuring cell ........................................ 7-4
7.5.2 How to clean cell..................................................................................... 7-9
7.6 Inspection and maintenance of limited service-life components ................... 7-9
8. TROUBLESHOOTING .............................................................................................. 8-1
8.1 Error message.................................................................................................. 8-1
8.2 Other Troubleshooting .................................................................................... 8-3
9. SPECIFICATIONS...................................................................................................... 9-1
9.1 Specifications .................................................................................................. 9-1
9.2 Model and Suffix codes .................................................................................. 9-5
9.3 External Dimensions .................................................................................... 9-10
Customer Maintenance Parts List ............................................... CMPL 11G02M01-01E
Revision Record .................................................................................................................... i

1 - 1IM 11G02M01-01E
The infrared gas analyzer (IR200) measures the concentrations of CO2, CO, CH4, SO2, NO and O2
contained in sample gas.
CO2, CO, CH4, SO2, and NO are measured by non-dispersion infrared method, while O2is measured by
paramagnetic or fuel cell method. Up to 4 components including O2 (3 at the maximum for measurement
of components other than O2) can be measured simultaneously.
A high-sensitivity mass flow sensor is used in the detector unit of infrared method. Due to use of single
beam system for measurement, maintenance is easy and an excellent stability is ensured for a long period
of time.
In addition, a microprocessor is built in and a large sized liquid crystal display is provided for easier
operation, higher accuracy and more functions.
This analyzer is thus optimum for combustion control of various industrial furnaces, botanical study and
global atmospheric research.
1. OVERVIEW

2 - 1IM 11G02M01-01E
2.1 Description of each unit
2. NAME AND DESCRIPTION OF EACH PART
Fig. 2-1 Name and description of each unit
Name Description
(1) Handle Draws the analyzer unit from the case.
(2) Power switch Turns ON/OFF this analyzer.
(3) Display/Operation panel Liquid crystal display and keys for various operational settings are arranged.
(4) Sampling gas inlet Port for connecting the sample gas injection pipe
(5) Sampling gas outlet Port for connecting the pipe for discharging the gas after analysis
(6) Purge gas inlet Port for connecting the purge gas pipe
(7) Terminal block 1 Analog output terminals
(8) Terminal block 2 O2analyzer signal and contact input terminals
(9) Terminal block 3 Contact input/output terminals
(10) Terminal block 4 Contact output terminal
(11) Terminal block 5 Alarm output terminal
(12) Power inlet Used to connect the power cable.
(13) Connector for Used to connect the communication cable.
communication
POWER
MODE
INFRARED GAS ANALYZER
ESC
ENT
ZERO
SPAN
(1) Handle
(2) Power switch
(3) Display and operation panel
(11) Terminal block 5
(10) Terminal block 4
(7) Terminal block 1
(8) Terminal block 2
(9) Terminal block 3
(6) Purge gas inlet
(5) Sampling gas outlet
(4) Sampling gas inlet
(12) Power inlet
(13) Connector 2

3 - 1IM 11G02M01-01E
3. INSTALLATION
DANGER
CAUTION
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.
•For installation, observe the rule on it given in the instruction 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 sepa-
rated and fall to cause an injury.
•The gas analyzer is heavy. It should be transported carefully by two or more persons if
manually required. Otherwise, body may be damaged or injured.
•During installation work, care should be taken to keep the unit free from cable chips or other
foreign objects. Otherwise, it may cause fire, trouble or malfunction of the unit.
3.1 Selection of installation location
To install the analyzer for optimum performance, select a location that meets the following conditions;
(1) Use this instrument indoors.
(2) A vibration-free place
(3) A place which is clean around the analyzer.
(4) Power supply
Voltage rating ;100 V AC to 240 V AC
Allowable range ; 85 to 264 V AC
Frequency ; 50 Hz / 60 Hz
Power consumption; 70 VA max.
Inlet ; Conform to EN60320
Protection Class 1
(5) Operation conditions
Ambient temperature : -5 to 45°C
Ambient humidity : 90% RH or less, no condensation

3 - 2 IM 11G02M01-01E
CAUTION
3.3 Piping
Caution on piping
Inpiping,thefollowingprecautionsshouldbeobserved.
Wrongpipingmaycausegasleakage.
Iftheleakinggascontainsatoxiccomponent,thereisariskof
seriousaccidentbeinginduced.
Also,ifcombustiblegasiscontained,thereisadangerof
explosion,fireorthelikeoccurring.
• 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 atmo-
spheric 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.
3.2 Installation of analyzer
There are two methods of installing the analyzer.
For detailed dimensions, see Chapter 9.3.
Types
Guide rail
Slide rail
External dimensions
483
Mounting dimensions Mounting method
(Unit:mm)
INFRAREDGAS ANALYZER
SPAN
ZERO
ENT
ESC
POWER
MODE
429
177
465
M6 Guide rail
101.6
Slide rail
19 inch rack mounting (Note)
450 or more
Note) The mounting method should be selected to meet the installation requirements since the top
cover must be detached from the gas analyzer for maintenance and check.
Mounting method
Slide rail No maintenance space is provided at the top.
Guide rail Maintenance space is provided at the top.
Conditions
Recommended slide rail: 305A-20, Accuride International Inc.
Remarks
These methods must be rigid enough to
withstand the mass (about 10 kg) of the gas
analyzer.

3 - 3IM 11G02M01-01E
Observe the following when connecting the gas pipes.
• The pipes should be connected to the gas inlet and outlet at the rear panel of the analyzer,
respectively.
• Connect the sampling system to the instrument by using corrosion-resistant tube such as
Teflon, stainless steel, or polyethylene. In case where there is no danger of corrosion, don't
use rubber or soft vinyl tube. Analyzer indication may become inaccurate due to the adsorp-
tion of gases.
• Piping connections are Rc1/4 (1/4 NPT) female-threaded. Cut the pipe as short as possible for
quick response. Pipe of ø 4mm (inside diameter) is recommendable .
• Entry of dust in the instrumant may cause operation fault. Use clean pipes and couplings.
Purge gas inlet
Sampling gas outlet
Sampling gas inlet
Fig. 3-1 Piping
Sampling gas inlet: Connect the pipe so that zero/span calibration standard gas or
measured gas pretreated with dehumidification is supplied prop-
erly. The gas flow rate should be kept constant within the range of
1 ±0.5L/min.
Sampling gas outlet: Measured gas is exhausted after measurement.
Connect the pipe so that the gas may escape through the gas outlet
into the atmosphere.
Purge gas inlet: It is used for purging the inside of the total gas analyzer. When the
analyzer must be purged, refer to Item 3.4, Purging inside Ana-
lyzer.
Use dry gas N2or instrumentation air for purge gas. (flow rate of
1L/min or more should be used and no dust or mist is contained).
3.4 Sampling
(1) Conditions of sample gas
1. The dust contained in sample gas should be eliminated completely with filters. The filter at
the final stage should be capable of eliminating dust of 0.3 microns.
2. The dew point of sample gas must be lower than the ambient temperature for preventing
formation of drain in the analyzer. If water vapor is contained in sample gas, its dew point
should be reduced down to about 0°C through a dehumidifier.
3. If SO3mist is contained in sample gas, the mist should be eliminated with a mist filter,
cooler, etc. Eliminate other mist in the same way.
4. If a large amount of highly corrosive gas such as Cl2, F2or HCl is contained in sample gas,
the service life of analyzer will be shortened. So, avoid such gases.
5. Sample gas temperature is allowed within a range from 0 to 50°C. Pay attention not to flow
hot gas directly into the analyzer.

3 - 4 IM 11G02M01-01E
(2) Sampling gas flow rate
A flow rate of sampling gas must be 1 ±0.5L/min. A flow meter should be provided as shown in
Fig. 3-2 to measure flow rate values.
(3) Preparation for standard gas
Prepare the standard gas for zero/span calibration.
Zero gas
Without O
2 Analyzer Built in O 2 Analyzer Externally mounted
zirconia O
2 Analyzer
N
2 gas N
2 gas Dry air, air or gas in
concentration of 80% or higher
of the O
2 range (CO 2 should not
be contained in zero gas if CO
2
meter is provided.)
Span gas except for O
2 Gas with concentration
of 90% or more of full
scale
Gas with concentration
of 90% or more of full
scale
Gas with concentration
of 90% or more of full
scale or atmospheric air
(21%)
Gas with concentration of 90%
or more of full scale
Span gas for O
2 1 to 2% O
2 gas
* We recommend you to feed the zero gas shown above by humidifying it, if NO or SO
2 is included in
components to be analyzed.
(Note)
It is understood to influence the calibration model of the infrared gas analyzer when a lot of H2,
He, and Ar are included in the measurment gas (pressure broadening).
The span gas must use a gas near the composition of the measurement gas when you measure the
gas like the above-mentioned.
(4) Reduction of moisture interference
NO and SO2measurement is subject to moisture interference.
As shown by the configuration example on the next page, provide a device for humidifying zero
calibration gas, thus controlling the moisture content at a constant level (moisture content in
sample gas should also be controlled here) in configuring a sampling system. That allows the
same moisture content as in the case of measurement to be contained in zero gas for calibration.
(5) Purging of instrument inside
The inside of instrument need not be purged generally except for the following cases.
1. A combustible gas component is contained in sample gas.
2. Corrosive gas is contained in the atmospheric air at the installation site.
3. The same gas as the sample gas component is contained in the atmospheric air at the installa-
tion site.
In such cases as above, the inside of analyzer should be purged with the air for instrumentation
or N2. Purging flow rate should be about 1L/min.
If dust or mist is contained in purging gas, it should be eliminated completely in advance.
(6) Pressure at sampling gas outlet
Pressure at the sampling gas outlet should be set to atmospheric pressure.

3 - 5IM 11G02M01-01E
(7) Example of sampling system configuration
The system configuration may vary depending upon the nature of measured gas, coexistent gases
or application. A typical configuration diagram is shown in Fig. 3-2. Since a system configura-
tion depends upon measured gas, consult with Yokogawa.
Fig. 3-2 A typical example of sampling system
Pump 4-way selector
cock
Primary filter
Safety
drain
trap
Electronic
dehumidifier
Drain
pot
Standard gas
for zero calibration Standard gas for span calibration
Ball valve
Drain
Sample
gas inlet
Flow meter
Exhaust
(atmospheric
pressure)
Secondary
filter Gas
analyzer
(IR200)
External
O 2 analyzer
F03.EPS
1
6
2
3
5
4
7
8
9
10
Measurement of sample gas with low moisture content (room-temperature saturation level or below):
CO, CO
2 and CH 4 measurement
pp
A dehumidifier must be used for CO (0-200 ppm)
and SO
2 measurements (to prevent saturation at
28C). Even in any other gas measurements, if
sample gas has a high moisture content or if
condensation is likely to occur, a safety drain trap
and a dehumidifier should be used.
p
Pump
Primary filter
Safety
dran trap Electronic
dehumidifier
Drain
pot
Standard gas
for span calibration
Ball valve
Drain
Flow meter Secondary filter
Gas analyzer
(IR200)
External O 2
analyzer
Measurement of sample gas with high moisture content or NO, SO 2 , or CO (0-200 ppm range) measurement
A dehumidifier must be used for NO, SO 2 , and CO (0-200 ppm) measurements (to prevent
saturation at 28C). Use either atmospheric air or cylinder gas as a zero calibration gas and
supply it through a bubbler (humidifying) to reduce interference of water.
Atmosphere
NO 2 /NO
converter
Pump
p
p
3-way
solenoid valve
Solenoid
valve
Solenoid
valve
Bubbler
Exhaust
(atmospheric pressure)
Solenoid
valve
Standard gas
for zero calibration
p
1
2
3
3
4
5
6
8
8
9
14
14 14
10
12
14
11
13
No. Item Description
Primary filter (mist filter) Remove dust and mist
Safety drain trap
Pump
Electronic dehumidifier
Drain pot
Ball valve
4-way selector cock
Standard gas for calibration
Flow meter
Separate and discharges drain
Suck in sample ga
Dehumidify sample gas
Collect discharged water from dehumidifier
Used for discharging drain
Used for switching sampling and calibration lines
Used for zero/span calibration
Adjust and monitor sample gas flow rate
Secondary filter (membrane filter) Remov fine dust
T03.EPS
NO 2 /NO converter Convert NO 2 gas into NO gas
3-way solenoid valve Used for introducing humidified gas
Bubbler Humidify calibration gas
Solenoid valve Used for switching sampling and calibration lines
1
2
3
4
5
6
7
8
9
10
11
12
13
14

3 - 6 IM 11G02M01-01E
Caution on wiring
• Wiring work must be performed with the main power set to
OFF to prevent electric shocks.
• Enforce construction of class-D grounding wire by all
means, 100Vor less.
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.
• Be sure to use a power supply of correct rating. Connec-
tion of power supply of incorrect rating may cause fire.
Each external terminal is provided on the rear panel of the analyzer. (See Fig. 3-3)
Wire each terminal, referring to Fig. 3-3 and (1) to (7).
(1) Power inlet
When using supplied power cable, connect the female side to the power inlet at the rear panel of
the analyzer, and insert the male side into a receptacle matching the rating.
Fig. 3-3 Rear panel
Power inlet (3 pins)
100 to 240V AC
50/60Hz
Female
side
Male side
) (
Supplied power cable
Fig. 3-4
Terminal block 1
Terminal block 2
Connector for
communication
Terminal block 3
Terminal block 4
Terminal block 5
3.5 Wiring method
CAUTION

3 - 7IM 11G02M01-01E
IR200 power supply
Varistor or
spark killer
Locate and connect
in close proximity
Noise source
(2) Analog output signal (AO): terminal block 1,
1
to
10
,
15
to
20
.
Output signal: 4 to 20 mA DC or 0 to 1 V DC (selected when ordering)
Non-insulated output
Allowable load: 4 to 20 mA DC, 550Ωor less
0 to 1 V DC, 100kΩor more
•Analog output is provided from each terminal corresponding to the channel displayed in the
measurement screen.
Note) All of analog output signals for the instrument are not isolated. It is recommended to
isolate signals individually to prevent interference from unnecessary signals or to
prevent external interference, especially leading the cable of more than 30 meters to
outdoor.
(3) O2sensor input: terminal block 2,
1
–
2
.
Input signal:
External zirconia O2analyzer: Zirconia O2sensor signal (ZX8D*C output)
External O2analyzer: 0 to 1 V DC (DC input resistor of 1MΩor more)
•It is used when the external zirconia O2analyzer or external O2analyzer is specified as order.
•To connect to the output of the external Zirconia analyzer or external O2analyzer prepared
separately.
•In case of an external O2analyzer, input a signal of 0 to 1 V DC with respect to O2full scale
of the analyzer.
•In case of built-in O2analyzer, do not use the terminals.
Note) O2senser input is not isolated. It is recommended to isolate input signal to prevent
inter ference from unnecessary signals or to prevent external interference.
Zirconia O2sensor should be installed at a location that is as close to this instrument
as possible.
When noise source is in the vicinity
Do not install the instrument near an electric device
that generates noise from the power supply (such as
high-frequency furnace and electric welder). If
there is no other choice but to install it near such
devices, provide completely separate power line to
eliminate noise.
In case noise may enter from a relay, solenoid valve,
etc. through power supply, connect a varistor or
spark killer to the noise source as shown below. If
the varistor or spark killer is located away from the
noise source, no effect is obtainable. So, locate near
the noise source.