YOKOGAWA OX100 User manual

User’s
Manual OX100
General-Purpose Oxygen Analyzer
IM 11M10A01-01E
IM 11M10A01-01E
4th Edition

i
IM 11M10A01-01E
uSafety Precautions
n Safety,Protection,andModicationoftheProduct
• In order to protect the system controlled by the product and the product itself and ensure
safe operation, observe the safety precautions described in this user’s manual. We assume
no liability for safety if users fail to observe these instructions when operating the product.
• Ifthisinstrumentisusedinamannernotspeciedinthisuser’smanual,theprotection
provided by this instrument may be impaired.
• If any protection or safety circuit is required for the system controlled by the product or for
the product itself, prepare it separately.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modicationoftheproductisstrictlyprohibited.
• The following safety symbols are used on the product as well as in this manual.
WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual in
order to avoid the risks for the human body and health including risk of injury, electric shock, or
fatalities. or the damages to instruments. The manual describes what special care the operator
must take to avoid such risks.
CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in order to
prevent the instrument (hardware) or software from being damaged, or a system failure from
occurring.
The following are signal words to be found only in our instruction manuals.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
nWarning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
from using the product or any defect of the product that YOKOGAWA can not predict in advance.
nNotes on Handling User’s Manuals
• Please hand over the user’s manuals to your end users so that they can keep the user’s
manuals on hand for convenient reference.
• Please read the information thoroughly before using the product.
• The purpose of these user’s manuals is not to warrant that the product is well suited to any
particular purpose but rather to describe the functional details of the product.
• No part of the user’s manuals may be transferred or reproduced without prior written
consent from YOKOGAWA.
• YOKOGAWA reserves the right to make improvements in the user’s manuals and product at
any time, without notice or obligation.
• Ifyouhaveanyquestions,oryoundmistakesoromissionsintheuser’smanuals,please
contact our sales representative or your local distributor.
Media No. IM 11M10A01-01E 4th Edition : Oct. 2019 (YK)
All Rights Reserved Copyright © 2000, Yokogawa Electric Corporation
4th Edition : Oct. 23, 2019-00

ii
IM 11M10A01-01E-
WARNING
 Hightemperature,takecare
When the sensor is powered on, the sensor tip gets very hot. Be careful not to touch it.
4-20mA
ENT.
%
ppm
FAILALM
1000ppmAIR
MODE
SET
Caution: Sensor is HOT
F1.EPS
Power
Be sure to check the power supply voltage before turning on the power.
Grounding
Be sure to connect a Class D (100 or less) ground before turning on the power, to minimize the
possibility of shock.
Need for Grounding
Do not cut the internal or external protective ground wire, or remove the ground wire from the
terminal. This creates a shock hazard.
DonotOperatewithoutProtectiveGroundingandFuse
Do not operate the instrument without protective grounding and correct fuse.
Fuse
For safety, this product is fused internally. It is recommended that you ask the local service
representative to change the fuse; do not either change it yourself, or open the case to check the
fuse.Turno󰀨thepowerswitchanddisconnecttheinstrumentfromthepowerbeforechanging
thefuse.Donotuseafuseofdi󰀨erenttypeorsize,orshortcircuitthefuseholder.
EnvironmentalRestrictions
Danger:Donotusethisinstrumentinaammable,explosive,orsteamyenvironment.Donottry
to measure gases with traces of redox gas, corrosive gas, or organic silicone gas.
Keep Hands Out
While voltage is applied, keep hands out. Internal parts should be replaced by our service
representative, or by an authorized person.
External Connections
Before wiring, to minimize the possibility of shock, disconnect power from the instrument.
Also check ground connection to this instrument, to the system being measured, and to any
associated external control equipment.
4th Edition : Oct. 23, 2019-00

iii
IM 11M10A01-01E
uAfter-sales Warranty
nDonotmodifytheproduct.
nDuringthewarrantyperiod,forrepairunderwarranty,carryorsendtheproduct
tothelocalsalesrepresentativeorserviceo󰀩ce.Yokogawawillreplaceor
repairanydamagedpartsandreturntheproducttoyou.Before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.
• If we replace the product with a new one, we won’t provide you with a repair report.
• Yokogawa warrants the product for the period stated in the pre-purchase quotation
Yokogawashallconductdened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.
nIn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
Electric did not supply.
• Failureduetoimproperorinsu󰀩cientmaintenancebyuser.
• Failureduetomodication,misuseoroutside-of-specicationsoperationwhichYokogawa
does not authorize.
• Failureduetopowersupply(voltage,frequency)beingoutsidespecicationsorabnormal.
• Failure caused by any usage out of scope of recommended usage.
• Anydamagefromre,earthquake,stormsandoods,lightning,disturbances,riots,warfare,
radiation and other natural changes.
nYokogawadoesnotwarrantconformancewiththespecicapplicationatthe
usersite.Yokogawawillnotbeardirect/indirectresponsibilityfordamagedue
toaspecicapplication.
nYokogawaElectricwillnotbearresponsibilitywhentheuserconguresthe
productintosystemsorresellstheproduct.
nMaintenanceserviceandsupplyingrepairpartswillbecoveredforveyears
aftertheproductionends.Forrepairforthisproduct,pleasecontactthe
nearestsaleso󰀩cedescribedinthisinstructionmanual.
uNotes on Use
• Donotdroporjolttheequipment,oritsaccuracymaybeadverselya󰀨ected.
• Do not attempt to disassemble the equipment, or it may malfunction.
• As far as possible, install the equipment horizontally. The sensor should be installed
securely so that it does not vibrate. Avoid installing the equipment in places where the
temperature exceeds 70°C.
• Avoid installing the equipment where it would be exposed to direct sunlight, radiant heat,
or the weather, and where vibration exists.
• Avoid installing the equipment in atmospheres containing corrosive gases, gas atmos-
pheres out of measuring scope, or atmospheres where the sensor is exposed to silicone
vapor.
4th Edition : Oct. 23, 2019-00

iv
IM 11M10A01-01E-
• Keep the equipment away from noise-generating devices to minimize the possibility of
malfunction, although it is designed to cope with noise.
• The sensor has a limited life, which varies depending on operating conditions. It is
strongly recommended that you replace the sensor once a year from a preventive main-
tenance standpoint, even if sensor deterioration is not observed.
• Keep this instruction manual handy for your quick reference during operation and main-
tenance.
uRestrictions on Use
• Donotusetheequipmentinatmospherescontainingcombustible,corrosive,oruegases,
or organic compounds.
• Ifitisusedinsilicongasatmospheres,inowfurnacesornitrogenreowfurnaces,the
equipment must be used in the following system:
• The sampling unit, K9424GA, must be used.
• The sampling unit requires appropriate maintenance, which is determined by gas
conditions. Filters and activated carbon packs should be replaced at intervals which depend
on the operating conditions.
For best measurement, use new activated carbon packs. Using expired packs may result in
invalid measurement results, or even sensor deterioration.
• If you have any questions, please contact your Yokogawa representative.
uHowtoUseThisManual
The structure of this manual is as shown in the table below. This table shows which chapters you
are recommended to read when performing the corresponding tasks.
Chapter to refer to:Unpacking
installation
Initial
setting
Daily
operation
Changing
settings
Maintenance
Maintenance
troubleshooting
Chapter 1. Overview
Chapter 2. Installation
Chapter 3. Operation
Chapter 4. Troubleshooting
Appendix 1. Sampling Unit
Appendix 2. Calibration Gas Kits
Safety precautions
CMPL (Parts List)
: Read and completely understand before operating the equipment.
: Read before operating the equipment, and refer to it whenever necessary.
4th Edition : Oct. 23, 2019-00

Toc-1
IM 11M10A01-01E
OX100
General-Purpose Oxygen Analyzer
CONTENTS
IM11M10A01-01E4thEdition
uSafety Precautions........................................................................................i
1. Overview.................................................................................................... 1-1
1.1 CautionsRegardingUse.................................................................................. 1-1
1.2 StandardSpecications................................................................................... 1-1
1.3 ModelandSu󰀩xCodes................................................................................... 1-3
1.4 ExternalDimensions........................................................................................ 1-4
1.5 SensorOperatingPrinciples........................................................................... 1-6
2. Installation................................................................................................. 2-1
2.1 NamesandFunctionsofParts........................................................................ 2-1
2.1.1 Sensor................................................................................................ 2-1
2.1.2 Instrument Body................................................................................. 2-1
2.2 InstallationLocationfortheInstrument......................................................... 2-4
2.3 InstallingtheInstrument.................................................................................. 2-5
2.4 Wiring................................................................................................................. 2-6
2.4.1 Power Wiring...................................................................................... 2-6
2.4.2 Connecting to an External Instrument ............................................... 2-7
2.5 InstallationofSensor....................................................................................... 2-7
2.6 InstallingtheOptionalSamplingUnit(K9424GA)....................................................... 2-8
2.7 CalibrationKit(Optional)............................................................................... 2-10
3. Operation................................................................................................... 3-1
3.1 Calibration......................................................................................................... 3-1
3.1.1 One-point Calibration in Atmospheric Air (Span Calibration)........................ 3-1
3.1.2 When Measuring on 0 to 1000 ppm O2Range.................................. 3-2
3.1.3 Setting Error Display .......................................................................... 3-2
3.2 AlarmSetting..................................................................................................... 3-3
3.3 AlarmsandAlarmOutput................................................................................ 3-3
3.4 Setting4to20mADCOutput.......................................................................... 3-3
4. Troubleshooting....................................................................................... 4-1
uAppendix1.SamplingUnit....................................................................... App.-1
1. Specications..............................................................................................App.-1
2. Installation...................................................................................................App.-2
3. OperatingProcedures................................................................................App.-3
uAppendix2.CalibrationGasKits............................................................. App.-5
4th Edition : Oct. 23, 2019-00

Toc-2
IM 11M10A01-01E
1. ConnectingtheNeedleValveAssemblytotheGasCylinder................App.-5
2. SupplyingtheCalibrationGas..................................................................App.-6
3. StoppingSupplyingtheCalibrationGas..................................................App.-6
CustomerMaintenancePartsList......................................CMPL11M10A01-01E
RevisionInformation...............................................................................................i
4th Edition : Oct. 23, 2019-00

<1. Overview>1-1
IM 11M10A01-01E
1. Overview
1.1 CautionsRegardingUse
CAUTION
· This is a precision instrument; be careful not to drop it.
· Do not disassemble it, as it may stop operating normally.
· As far as possible, mount horizontally. Secure the sensor so that it can’t vibrate. Avoid
installing in places where the temperature exceeds 70°C.
· Do not mount this instrument in a place that is exposed to direct sunlight, or to direct
radiation from a furnace, boiler or the like, in a windy place, or in a location that is subject to
vibration.
· Avoid mounting in a location where there may be corrosive gases, gases other than the
measured gas, or organic silicon vapor.
· Wherethefurnacegasofanitrogenreowfurnacecontainsorganicsolventatafewppmto
percentage level, the sensor should be used with the optional sampling system (K9424GA),
to avoid contact with the solvent.
· This instrument was designed to be resistant to electrical noise, but to avoid invalid readings
it would be wise to avoid using electrically noisy devices in the vicinity.
· The sensor is a consumable. Its life depends on usage and environment, but is about one
year.
· Be sure to keep this manual in a handy place when using this instrument.
1.2 StandardSpecications
Measured gas: Measures O2in N2or mixed gases; can’t contain silicone vapor,
ammablegasororganicsolvent.
Measuring principle: Current-limited Zirconia sensor
Measuring range: 0 to 1000 ppm O2, 0.1 to 25% O2(measuring range autoswitching)
Note: If you want an oxygen (concentration) control range of 0.2 to 0.5%,please consult with us, or your Yokogawa
salesperson or representative.
Samplingmethod: Naturaldi󰀨usion(directinput)
Linearity : ±5% of span (for 0-1000 ppm range, with O2being in the range 0 to 100
ppm). ±3% of span (for 0-1000 ppm range, with O2being in the range
100 to 1000 ppm). ±2% of span (for 0.1 to 25% range, with O2being in
the range 100 to 1000 ppm).
Repeatability : ±5% of span (for 0-1000 ppm range, withO2being in the range 0 to 100
ppm). ±2% of span (for 0-1000 ppm range, with O2being in the range
100 to 1000 ppm). ±2% of span (for 0.1 to 25% range, with O2being in
the range 100 to 1000 ppm).
Stability (Drift): ±2% of span per week.
Display: LED digital display
Output signal: 4-20 mA DC isolated (measuring range: 0 to 1000 ppm or 0.1 to 25%).
Contact outputs (relay) : Closed if fail, contact rating 250 V AC / 3A
Closed if alarm, contact rating 250 V AC / 3A.
4th Edition : Oct. 23, 2019-00

<1. Overview>1-2
IM 11M10A01-01E
Operating temperature range: Sensor 0 to 250°C (within 5 cm of tip, the rest 0 to 70°C )
Converter 0 to 50°C
Measurementgasconditions:  Atmosphericpressure,temperature0to70°C,gasow
up to 1 m/s, no corrosive gases like SO2(can’t be used
inatmospherewithammablegases,corrosivegases,
or silicone vapor.
Power consumption: up to 15 VA.
Power supply : 100 V AC ±10% 50/60 Hz.
Weight : Body approx. 600 g, sensor approx 150 g.
Accessories : Oxygen sensor assembly (1), nipple (1), bracket (2),
extension cable(1), instruction manual (1), warranty
CARD (1)
4th Edition : Oct. 23, 2019-00

<1. Overview>1-3
IM 11M10A01-01E
1.3 ModelandSu󰀩xCodes
• OX100 Current limited Zirconia Oxygen Analyzer
Model Su󰀩xCode Option code Specications
OX100 ............................ ...................... General purpose Oxygen analyzer
Application -1
-2
-3
......................
......................
......................
Oxygenanalyzer(Can’tuseanactivatedcarbonlter)*1
For (N2)reowfurnace(Specifyincaseofusinganactivated
carbonlter)*1
MonitoringfordeciencyofOxygenwithlowalam,Measuring
range 0-25%
Measuring Range 1...................... 0-1000 ppm/ 0-25% O2
Power Supply 5...................... 100 V AC ±10%, 50/60 Hz
Sensor 1
N
......................
......................
Sensor assy. cable 3m + extension 2 m
No sensor assembly
Manual E
J
......................
......................
English
Japanese
L9811LA plastic resin sensor holder is provided as standard accessory.
*1Formeasurementintherangeof1500to4500ppm,usetheOX102.
•Samplingunit,calibrationkit
Part Number Specications
K9424GA Sampling unit
K9424JA Calibrationkit:Six1-literasks,1000ppmO2/N2gasoutletcock(withowadjuster)
K9424JB Calibrationkit:Six1-literasks,1000ppmO2/N2gasoutletcock(withoutowadjuster)
K9424JR Calibrationkit:Six1-literasks,10000ppmO2/N2gasoutletcock(withowadjuster)
K9424JS Calibrationkit:Six1-literasks,10000ppmO2/N2gasoutletcock(withoutowadjuster)
•Accessories
Part Number Specications
K9346WM Activatedcarbonelement,veperpack:forsamplingunit
K9424JC Gasoutletcock(withowadjuster):qty.one
K9424JD Gasoutletcock(withoutowadjuster):qty.one
K9424JP Standard gas cylinder (1000 ppm O2/N2): qty. six
K9424JQ Standard gas cylinder (10000 ppm O2/N2): qty. six
K9424BA Sensorassy.cable3mforOX100only
K9424CA Extensioncable,2m:forOX100only
B9877BA BracketformountingOX100,twoperset.
K9424DB Sensorholder(metal)forOX100orOX102
L9811LA Sensorholder(plastic)forOX100orOX102
K9424GQ Disklter
K9424WH Feltlter
4th Edition : Oct. 23, 2019-00

<1. Overview>1-4
IM 11M10A01-01E
1.4 ExternalDimensions
InstrumentBody
96
26.2
23
13 100 91.6
96 91.6
Body only
(Part no. K9424A□)
1 to 10
Bracket
(Part no. B9877BA)
(Panel thickness)
Unit: mm
Fig.1.1 ExternalDimensionsofInstrument
Panel Dimensions
92 +0.8
0
92 +0.8
0
(25)
(25)
Minimum 117
Minimum 117
Unit: mm
4th Edition : Oct. 23, 2019-00

<1. Overview>1-5
IM 11M10A01-01E
Sensor
3000±150
2000±100
ø4±0.5
ø8±0.5
(5150)
(150)
(35)
G3/8
(26)
(92)(16.5)(45)
50
Extension cable
(Part no. K9424CA)
Sensor Assembly
(Part no. K9424BA)
Nipple
(Part no. L9811LA)
Caution : Sensor is HOT
Unit: mm
Max temp. 150°C when metal nipple
(option code "/S" or P/N K9424DB) is used.
Temp. 70°C max.
Temp. 250°C max.
*
*:
Temp. 70°C max.
Figure1.2 Sensordimensions
Sample outlet (Rc1/4)
Sample inlet (Rc1/4)
(220)
136( )
146( ) 290( )
240( )
Power line connector
Needle valve
Activated
carbon filters
Flowmeter Power line switch
Connector to joint sensor
Sampling Conditions
• Pressure at sampling point : 1013 ± 40 hPa
• Sample gas flow rate : 500 ± 100 ml/min
• Pressure at sample outlet : 1013 ± 40 hPa
• Gas temperature : 50°C max.
• Organic solvent content : ppm to a few percentage
• Dust content : 5 mg/Nm max.
• Power supply : 100 V, 50/60 Hz
• Piping connection : Rc1/4
3
Figure1.3 Samplingunit
4th Edition : Oct. 23, 2019-00

<1. Overview>1-6
IM 11M10A01-01E
Standard
Gas
OX100 Sensor
K9424JD
(255)
(310)
(90)
∅75
Pressure
Gauge
Gas Vent Tubing
Needle Valve Assembly
Needle Valve Assembly, with Pressure Reducing Valve
and Fixed Throttle
Rc1/8 (Nominal diameter of piping
connection for K9424JD)
Standard Gas Cylinder
Standard Calibration
Gas (6 bottles/box)
K9424JC
Approx. 340
Approx. 180
Part Number Specications
K9424GA Sampling unit
K9424JA Calibrationkit:1000ppm,6cylinders(1L)+needlevalveassembly,withowadjustment
K9424JB Calibrationkit:1000ppm,6cylinders(1L)+needlevalveassembly,withoutowadjustment
K9424JR Calibrationkit:10000ppm,6cylinders(1L)+needlevalveassembly,withowadjustment
K9424JS Calibrationkit:10000ppm,6cylinders(1L)+needlevalveassembly,withoutowadjustment
Figure1.4 CalibrationKit(Optional)
1.5 SensorOperatingPrinciples
Pt leadwire
Pt leadwire
Pt leadwire
Anode
Cathode
Perforated alumina substrate
Pt heater
(heated to 700°C)
Fixed Electrode
(Zirconia)
CurrentowingintheZirconiaxedelectrolytecausesoxygentomovefromthenegativeto
positiveelectrode(actsasanoxygenpump).Iftheowofoxygentothenegativeelectrodeis
restricted by the alumina substrate then a current saturation area is created and the same current
owsregardlessoftheappliedvoltage.Thecurrentthatowsiscalledthelimitingcurrent.When
axedvoltageisapplied,thecurrentowisproportionaltotheoxygenconcentration.
4th Edition : Oct. 23, 2019-00

<2. Installation >2-1
IM 11M10A01-01E
2. Installation
2.1 NamesandFunctionsofParts
2.1.1 Sensor
Housing
Sensor Assembly
Sensor Cable
Extension cable
Crimp-on terminals Connector (can disconnect)
When replacing sensor,
replace sensor assembly as a whole
Caution: Sensor is HOT
Figure2.1 Oxygensensor
2.1.2 InstrumentBody
Display panel
FAIL
%
4-20mA
ENT.
ppm
SET
MODE
1000ppmAIR
ALM
1000 ppm lamp (Cal. 2)
Lit in 1000 ppm O2calibration mode
4-20 mA lamp
Lit for range 0-1000 ppm O2and
4-20 mA output
PPM lamp
Lit when range is 0 to
1000 ppm O2
“%” lamp
Lit when range is 0.1 to
25% O2
FAIL lamp
Self diagnostic functions
detect if sensor is open
circuit
“AIR” lamp (Cal. 1)
Lit in one-point atmospheric
(20.6% O2) calibration mode
“SET” lamp (Setting)
Lit when setting Alarm setpoint
Main display window
7-segment LED, 4-digit display
showing oxygen concentration
Measured value is displayed
Flashes while entering setting
“ALM” lamp
Lit when oxygen concentration
exceeds limit
Figure2.2 Displaypanel
4th Edition : Oct. 23, 2019-00

<2. Installation >2-2
IM 11M10A01-01E
Terminal layout
13
6 14
10
9
11
12
2
1
3
4
5
15
16
17
7
8
4 - 20 mA DC
Alarm contact output
Abnormal contact output
100 V AC ±10 %
(50/60 Hz)
Ground
Cable color
Red Sensor
White Sensor
Yellow Heater
Black Heater
Figure2.3 Terminallayout
Terminal layout
ALM
AIRSET
FAIL
4-20mA
%
ppm
1000ppm
ENT.MODE
Enter key
Enters current mode setting
Mode key
Increase or decrease alarm setting
Toggles mode.
Setting mode Air mode (Cal1)
1000 ppm mode (Cal2)
Measurement mode
Setting mode
[▲], [▼] keys
Figure2.4 OperationKeys
4th Edition : Oct. 23, 2019-00

<2. Installation >2-3
IM 11M10A01-01E
Mode Sequence
MODE
ENT.
20.6
ppm
%
s
d
SET AIR 1
000ppm
4-20 mA
Measurement mode
(Normal measurement)
Oxygen concentration is
displayed on main display.
Setting mode
(Alarm setting)
Can set alarm
in range 0 to 25% O2.
Switch to setting mode
NA
NA
Press both to
switch to 4-20 mA
output range
NA
Cal1 mode
Atmosphere
(20.6% O2)
Calibrate in atmosphere.
Cal2 mode
(1000 ppm)
Calibrate with1000 ppm O2
for better accuracy at low
concentrations.
Switch to Cal1 mode
Increase setting
Decrease setting
Enters setting and
switches to measure.
Switch to Cal2 mode
NA
NA
Switch to measure
Starts calibration.
At end, switches to
measure.
Increase setting
Decrease setting
Starts calibration.
At end, switches to
measure.
Key SW
StateTransitionFlowChart(Example)
MODE ENT.
SET
AIR
1 000ppm
4-20 mA
ENT.
ENT.
ENT.
MODE
MODE
MODE
Setting mode
Calibration 2 mode
20.6
ppm
%
s
d
(Example)
NA
NA(Calibrate)
(Calibrate)
Increase setting Decrease setting
Increase setting Decrease setting
(Enter setting)
(Press simultaneously)
4-20 mA output range switching
Calibration 1 mode
Measurement mode
T2.2E.EPS
4th Edition : Oct. 23, 2019-00

<2. Installation >2-4
IM 11M10A01-01E
2.2 InstallationLocationfortheInstrument
Install in a location that meets the following requirements:
CAUTION
(1) Instrument panel or rack
This product should be mounted on an instrument panel or in a rack.
(2) Well-ventilated location
To keep instrument cool, mount in a well-ventilated location
(3) Location with minimal vibration
Install in a location with minimal vibration.
Instrumentaccuracymaybea󰀨ectediftheinstallationlocationissubjecttovibration.
(4) Horizontal location
As far as possible, the installation location should be horizontal.
Avoid locations with the following conditions:
CAUTION
(1) In direct sunlight or near hot objects
Choose an installation location with stable temperature (around ambient 23°C).
Placingthisinstrumentindirectsunlightornearhotobjectsmayadverselya󰀨ect accuracy.
(2) Location with oily smoke, warm or humid air, dust, corrosive gas Avoid such locations.
(3) NearasourceofelectromagneticeldsElectromagneticeldsmaya󰀨ecttheaccuracyof
the instrument.
4th Edition : Oct. 23, 2019-00

<2. Installation >2-5
IM 11M10A01-01E
2.3 InstallingtheInstrument
CAUTION
(1) The panel on which the instrument is mounted should be steel plate between 1 mm and 10 mm
thick.
(2) Insert the instrument from the front of the panel.
(3) As shown in Fig. 2.5, mount this instrument on the panel using the supplied brackets. The
bracketsmountonthetopandbottomofthecaseatthespeciedpositions(seeFig.1.1
External Dimensions of Instrument).
(4) Tighten the mounting bracket screws until they touch the panel, then tighten half a turn.
Brackets
F2.5E.EPS
Figure2.5 Mounting
CAUTION
Over-tightening the screws may distort the case or damage the brackets.
4th Edition : Oct. 23, 2019-00

<2. Installation >2-6
IM 11M10A01-01E
2.4 Wiring
WARNING
Secure all wiring behind the panel, to protect the ends of the wires and the terminals if the cable is pulled.
2.4.1 PowerWiring
CAUTION
Connect 100 V AC power to terminals 15 and 16 on the rear terminal strip. Ground terminal 17.
15
14
16
32
33
34
1735
Power cable
Ground
Figure2.6 Powerwiring
WARNING
• Tominimizethepossibilityofelectricalshock,ensurethatpowersourceiso󰀨beforewiring
power cable.
• Tominimizethepossibilityofre,use600Vratedheavyvinylinsulatedcable(JISC3307)
or similar for power wiring.
• Before applying power, connect the ground terminal to a ground connection with ground
resistance of 100 or less.
• Use crimp-on terminals (4 mm screw) and heat-shrink insulating sleeves on power and
ground wiring. (See Fig. 2.7 for illustration of crimp-on terminals).
• The power connection to this instrument should have a switch in it, for safety reasons.
• When wiring, be careful not to drop strands of wire or wire clippings into the instrument.
After
crimping
Before
crimping
Fig.2.7 Crimp-onterminals
4th Edition : Oct. 23, 2019-00

<2. Installation >2-7
IM 11M10A01-01E
2.4.2 ConnectingtoanExternalInstrument
CAUTION
This instrument provides three outputs: 4 to 20 mA DC (signal), “Alarm” contact, and “Fail”
contact.
• 4 to 20 mA DC output from terminals 9, 10: corresponds to O2concentration display range 0
to 1000 ppm or 0.1 to 25%. Refer to Section 3.4 below for range setting.
• Alarm contact output from terminals 11, 12: relay contact closes if concentration exceeds
alarm setting.
• Fail contact output from terminals 13, 14: relay contact closes if sensor heater element goes
open circuit.
WARNING
Tominimizethepossibilityofelectricalshock,ensurethatpowersourceiso󰀨beforewiringpowercable.
2.5 InstallationofSensor
CAUTION
• Use the nipple provided as an accessory, mount it horizontally and secure it so that it cannot
vibrate.
• When tightening, for cap use torque of 1 to1.5 N • m, and for other items use torque of 2to
2.5 N • m
WARNING
• Sensorcableshouldbewithin30cmofsensorhousing,andangleofbend(seegure
below) should not be greater than 60°.
• When mounting sensor through a 17 mm hole, mounting plate should be no greater than 4 mm
thick.
4th Edition : Oct. 23, 2019-00