YOKOGAWA ZR802S User manual

User’s
Manual ZR802S
Explosion-proof Zirconia Oxygen
Analyzer, Converter
Start-up and Safety Precautions
IM 11M13G01-01EN
IM 11M13G01-01EN
1st Edition
This Start-up Manual explains mainly the installation and wiring of the
ZR802S.
For detailed information and other information, the User’s Manual of the
ZR802S should be referred to.

IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
<Start-up and Safety Precautions> 2
ZR802S
Explosion-proof Zirconia Oxygen Analyzer, Converter
Start-up and Safety Precautions
IM 11M13G01-01EN 1st Edition
CONTENTS
uIntroduction...................................................................................................3
uCE/UKCA marking products .......................................................................5
u Control of Pollution Caused by the Product.................................................................6
uSafety Precautions .......................................................................................6
uCompliant Standards ...................................................................................8
1 Instrument Check .......................................................................................11
2. Wiring and Installation.............................................................................. 13
2.1 Installation site ................................................................................................... 13
2.2 Open and Close ................................................................................................. 13
2.3 Wiring .................................................................................................................. 14
3. Operation.................................................................................................... 17
4. Maintenance............................................................................................... 17
5. Explosion protected Type Instrument..................................................... 18
Revision Information ........................................................................................... 28

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
uIntroduction
Thank you for purchasing the ZR802S.
This Instructor’s Manual contains all essential information for the user to make full use of
ZR802S.
Please read the following respective documents before installing and using the ZR802S.
The related documents are listed as follows.
General Specications
Contents Document number Note
ZR22S, ZR802S, and ZR202S
Explosion-proof Zirconia Oxygen Analyzer GS 11M13G01-01EN Online manual
“EN” in the document number is the language code.
User’s Manual
Contents Document number Note
ZR802S
Explosion-proof Zirconia Oxygen Analyzer, Converter
Start-up and Safety Precautions
IM 11M13G01-01EN Printed manual
(This manual)
ZR22S and ZR802S
Explosion-proof Zirconia Oxygen Analyzer IM 11M13G01-02EN Online manual
“EN” in the document number is the language code.
An exclusive User’s Manual might be attached to the products whose su󰀩x codes or option
codes contain the code “Z” (made to customers’ specications). Please read it along with this
manual.
Technical Information
Contents Document number Note
ZR802G and ZR802S
Zirconia Oxygen/Humidity Analyzer, Converter
HART Communication
TI 11M12G01-61EN Online manual
ZR802G and ZR802S
Zirconia Oxygen/Humidity Analyzer, Converter
MODBUS Communication
TI 11M12G01-62EN Online manual
“EN” in the document number is the language code.
You can download the latest documents from our website.
http://www.yokogawa.com/an/ZR802/download/
For details on detectors and other related products, please read the individual instruction
manuals.
Media No. IM 11M13G01-01EN 1st Edition : Mar. 2023 (YK)
All Rights Reserved Copyright © 2023, Yokogawa Electric Corporation

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
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.
nDrawing Conventions
Some drawings may be partially emphasized, simplied, or omitted, for the convenience of
description.
Some screen images depicted in the user’s manual may have di󰀨erent display positions or
character types (e.g., the upper / lower case). Also note that some of the images contained in this
user’s manual are display examples.
nTrademark Notices
All other company and product names mentioned in this user’s manual are trademarks or
registered trademarks of their respective companies.
We do not use TM or ® mark to indicate those trademarks or registered trademarks in this user’s
manual.
nProduct Disposal
The instrument should be disposed of in accordance with local and national legislation/
regulations.

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
uCE/UKCA marking products
nAuthorized Representative in the EEA and the Importer into the EU/
EEA Market
The Authorized Representative for this product in the EEA and the importer for this product into
the EU/EEA market via Yokogawa sale channel is:
Yokogawa Europe B.V.
Euroweg 2, 3825 HD Amersfoort, The Netherlands
nImporter for This Product into the Great Britain Market
In relation to UKCA marking, the importer for this product into the Great Britain market via the
YOKOGAWA sales channel is :
Yokogawa United Kingdom Limited
Stuart Road Manor Park Runcorn, WA7 1TR, United Kingdom
n Identication Tag
This manual and the identication tag attached on packing box are essential parts of the product.
Keep them together in a safe place for future reference.
nUsers
This product is designed to be used by a person with specialized knowledge.
nHow to dispose Batteries and Waste batteries:
(Only valid in the EU for EU Battery Directive/Regulation and in the UK for UK Battery
Regulation)
Batteries are included in this product. This marking indicates they shall be sorted out and
collected as ordained in the EU battery Directive/Regulation and UK battery Regulation.
When you need to replace batteries, contact your local Yokogawa o󰀩ce in the EEA and/or UK
respectively.
Do not dispose them as domestic household waste.
Battery type : Manganese dioxide lithium battery
Notice: The symbol (see above) means they shall be sorted out and collected as ordained in the
EU Battery Directive.
nInformation of the WEEE Directive
This product is purposely designed to be used in a large scale xed installations only and,
therefore, is out of scope of the WEEE Directive. The WEEE Directive does not apply.
This product should be disposed in accordance with local and national legislation/regulations.
The WEEE Directive is only valid in the EU and UK.

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
u Control of Pollution Caused by the Product
This is an explanation for the product based on “Control of Pollution caused by Electronic
Information Products” in the People’s Republic of China.
产品中有害物质的名称及含量
部件名称
有害物质
铅
(Pb) 汞 (Hg) 镉 (Cd) 六价铬 (Cr (VI)) 多溴联苯 (PBB) 多溴二苯醚 (PBDE)
外壳(金属) ××××○○
外壳(塑料) ××××○○
印刷电路板组件 ××××○○
○： 表示该有害物质在该部件中所有均质材料中的含有量都在GB/T26572所规定的限量要求以下。
×： 表示该有害物质至少在该部件的某一均质材料中的含有量超出GB/T26572所规定的限量要求。
环保使用期限: 这个标志是基于SJ/T11364，在中国（不包括台湾，香港，澳门）贩售的电子电
器产品所适用的环保使用期限。
只要遵守产品上关于安全及使用上的注意事项，从制造之日起计算在该年限
内，不会发生制品内的有害物质外泄，突然变异，对环境或人体以及财产产生
重大影响的情况。
（注） 该年限是《环境保护使用期限》，不是产品的保质期限。
另外，关于替换部件的推荐替换周期，请阅读使用说明书。
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, of injury, electric shock, or fatalities. 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.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
This symbol indicates Protective Ground Terminal.

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
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.
nAll rights reserved
The copyright of the programs and online manuals contained in the software media shall remain
with YOKOGAWA.
You are allowed to print the required pages of the online manuals for the purposes of using and/
or operating the product. However, you are not allowed to print or reproduce the entire document.
Except as stated above, no part of the online manual may be reproduced, either in electronic
or written form, registered, recorded, transferred, sold, or distributed (in any manner including
without limitation, in the forms of paper documents, electronic media, lms, or transmission
via the network). Any in-action and/or silence by YOKOGAWA with regard to any breach of the
above shall not be taken as any waiver of its rights whatsoever and YOKOGAWA reserves all its
rights until expressly waived by written notication and no other occasions.
nPrecautions for the product
WARNING
Installation and wiring
The ZR802S should only be used with equipment that meets the relevant IEC, American or
Canadian standards.
Yokogawa accepts no responsibility for the misuse of this unit.
Before opening the cover of the ZR802S converter, remove power and make sure of
nonhazardous (*) atmospheres.
(*) The text plate says “Open circuit at non-hazardous location before removing cover,” since the internal energy of the ZR802S
converter decreases under the specied value.
The denition of the non-hazardous area is followed by the description in the Users Guide to Installing Flameproof Electrical
Apparatus at Plants, issued by the Technology Institution of Industrial Safety, Japan: As a non-hazardous area is considered
a place where no occurrence of explosive gas atmospheres is guaranteed by the foreperson and conrmed by a written
document. Therefore, if non-hazardous area is secured, it is allowed to open the cover in the eld.Do not use an abrasive or
organic solvent in cleaning the instrument.
Electrostatic discharge
The ZR802S contains devices that can be damaged by electrostatic discharge. When servicing
this equipment, please observe proper procedures to prevent such damage. Replacement
components should be shipped in conductive packaging. Repair work should be done at
grounded workstations using grounded soldering irons and wrist straps to avoid electrostatic
discharge.
CAUTION
The Instrument is packed carefully with shock absorbing materials, nevertheless, the instrument
may be damaged or broken if subjected to strong shock, such as if the instrument is dropped.
Handle with care.
When you open the front panel, make sure the screws are completely out of the screw holes,
and then open the front panel slowly in order not to damage the threaded parts on the housing.
If the threaded parts are damaged and the screws cannot be tightened, the explosion-proof
performance will deteriorate.
This instrument is a Class A product, and it is designed for use in the industrial environment.
Please use this instrument in the industrial environment only.
The HART communication may be inuenced by strong electromagnetic eld.
In this case another trial of the HART communication and/or operation with ZR802S touch panel
or infrared switch can be carried out.

8
IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
uCompliant Standards
Explosion-proof approval of major standards and directives:
ATEX:
Applicable Standard:
EN IEC 60079-0
EN 60079-1
EN 60079-31
EN 60529 +A1 +A2
Type of protection II 2G Ex db IIC T6 Gb
II 2D Ex tb IIIC T85ºC Db
Temperature class for Ex “db” T6
The maximum surface
temperature for Ex “tb” T85ºC
Ambient temperature -20ºC and 55ºC
Enclosure Rating IP66
IECEx:
Applicable Standard:
IEC 60079-0
IEC 60079-1
IEC 60079-31
Type of protection: Ex db IIC T6 Gb
Ex tb IIIC 85ºC Db
Temperature class for Ex “db” T6
The maximum surface
temperature for Ex “tb”: T85ºC
Ambient temperature -20ºC and 55ºC
Enclosure Rating IP66
US (by FM):
Applicable Standard
FM Class 3600 ANSI/UL 60079-0
FM Class 3615 ANSI/UL 60079-1
FM Class 3616 ANSI/UL 60079-31
FM Class 3810 ANSI/UL 61010-1
ANSI/UL 61010-2-30
ANSI/UL 50E
NEMA 250 NEMA 250
ANSI/IEC 60529
Type of protection
Class I Division 1, Groups B, C,
D; T6 Class I, Zone 1, AEx db IIC T6 Gb
Class II, Division 1, Groups E, F, G,
Class III, Division 1; T6 Zone 21 AEx tb IIIC T85ºC Db
Temperature Class: T6 ―
Temperature class for Ex “db” ―T6
The maximum surface
temperature for Ex “tb”: ―T85ºC
Ambient temperature -20ºC and 55ºC -20ºC and 55ºC
Enclosure Rating Type4X, IP66 Type4X, IP66
CANADIAN
(CSA):
Applicable Standard:
CSA-C22.2 No. 94.2
CSA-C22.2 No. 60079-0
CAN/CSA-C22.2 No. 60079-1
CAN/CSA C22.2 No.60079-31
CAN/CSA-C22.2 No. 60529
CAN/CSA-C22.2 No. 61010-1
CAN/CSA-C22.2 No. 61010-2-030
Type of protection Ex db IIC T6 Gb
Ex tb IIIC T85ºC Db
Temperature class for Ex “db” T6
The maximum surface
temperature for Ex “tb”: T85ºC
Ambient temperature -20ºC and 55ºC
Enclosure Rating Type 4X, IP66

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
Explosion-proof approval and registration in specic countries:
UK-TYPE (UKEX):
Applicable Standard:
EN IEC 60079-0
EN 60079-1
EN 60079-31
EN 60529+A1+A2
Type of protection: II 2 G Ex db IIC T6 Gb
II 2 D Ex tb IIIC T85ºC Db
Temperature class for Ex “db” T6
The maximum surface temperature for Ex “tb”: T85ºC
Ambient temperature -20ºC and 55ºC
Enclosure Rating IP66
CHINA EX
(by NEPSI):
Applicable Standard:
GB/T 3836.1
GB/T 3836.2
GB/T 3836.31
Type of protection: Ex db IIC T6 Gb
Ex tb IIIC 85ºC Db
Temperature class for Ex “db” T6
The maximum surface temperature for Ex “tb”: T85ºC
Enclosure Rating IP66
TAIWAN EX: Registration
IECEx registered and approved for use in Taiwan.
For explosion-proof specications, please refer to
the IECEx section.

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
Safety, EMC, and RoHS conformity standards of ZR802S
Installation altitude: 2000 m or less
Installation category: (IEC61010); II
Pollution degree: (IEC61010); 2
Measurement category:O (other)
Note · Installation category, called overvoltage category, species impulse withstanding voltage. Category II is for electrical
equipment.
· Pollution degree indicates the degree of existence of solid, liquid, gas or other inclusions which reduce dielectric strength.
Degree 2 is the normal indoor environment.
Safety:
CE, UKCA EN 61010-1
EN 61010-2-030
UL UL61010-1
UL61010-2-030
CSA CAN/CSA-C22.2 No. 61010-1
CAN/CSA-C22.2 No. 61010-2-030
Morocco/LVD Arrêté:
NM EN 61010 1
NM EN 61010 2 030
GB GB30439 Part 1
EMC:
CE, UKCA EN 61326-1 Class A Table 2
EN 61326-2-3
EN 61000-3-2, EN IEC 61000-3-2
Morocco/EMC Arrêté:
NM EN 61326 1
NM EN 61326 2 3
NM EN 61000 3 2
RCM EN61326-1 Class A Table 2
KC Korea Electromagnetic Conformity Standard
Note · This instrument is a Class A product, and it is designed for use in the industrial environment. Please use this instrument in
the industrial environment only.
· Inuence of immunity environment (Criteria A) : Output shift is specied within ±20% of F.S.
RoHS: EN IEC 63000
Others:
REACH Regulation EC 1907/2006
Information of the WEEE Directive
This product is purposely designed to be used in a large scale xed
installations only and, therefore, is out of scope of the WEEE Directive.
The WEEE Directive is only valid in the EU and UK.

<Start-up and Safety Precautions> 11
IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
1 Instrument Check
Upon delivery, unpack the instrument carefully and inspect it to ensure that it was not damaged
during shipment. If damage is found, retain the original packing materials (including the outer
box) and then immediately notify the carrier and the relevant Yokogawa sales o󰀩ce.
n Checking the model and su󰀩x code
Make sure the model and su󰀩x code on the nameplate a󰀩xed to the left side of the housing.
Model and su󰀩x code is shown in Table 2.
ZIRCONIA CONVERTER
ZR802S
100-240VAC
-20 TO 55°C
Yokogawa Electric Corporation
Tokyo, 180-8750 JAPAN
Read
IM 11M13G01
MODEL
SUFFIX
STYLE
SUPPLY
AMB.TEMP
50/60Hz MAX.800VA
NO.
EW
・DO NOT OPEN WHEN AN EXPLOSIVE
ATMOSPHERE IS PRESENT.
・POTENTIAL ELECTROSTATIC CHARGING
HAZARD.
II 2 G Ex db IIC T6 Gb
II 2 D Ex tb IIIC T85 °C Db
No FM21ATEX0052X
No FM21UKEX0182X
IP66
0344
R-R-YHQ-
EEN503-2
ZIRCONIA CONVERTER
ZR802S
100-240VAC
-20 TO 55°C
Yokogawa Electric Corporation
Tokyo,180-8750 JAPAN
Read
IM 11M13G01
MODEL
SUFFIX
STYLE
SUPPLY
AMB.TEMP
50/60Hz MAX.800VA
NO.
EW
・DO NOT OPEN WHEN AN EXPLOSIVE
ATMOSPHERE IS PRESENT.
・POTENTIAL ELECTROSTATICCHARGING
HAZARD.
II 2 G Ex db IIC T6 Gb
II 2 D Ex tb IIIC T85 °C Db
No FM21ATEX0052X
No FM21UKEX0182X
IP66
0344
R-R-YHQ-
EEN503-2
nChecking accessories
The instrument is shipped with standard accessories. Optional accessories are sold separately if
necessary. Make sure the accessories in Table 1 or Table 2 are included.
Table 1 Standard accessories
Item Q'ty Description
Std. /RC /AC /RC, /AC
Fuse 1 1 1 1 3.15 A Parts No. A1113EF
Fuse 2 2 2.5 A Parts NO. A1112EF
Mounting bracket (standard) 1 1 Parts No. K8001PN
Mounting bracket (Rugged Coating) 1 1 Parts No. K8001PR
U-bolt for pipe mounting 2 2 2 2 2B
Tag label (standard) 1 1 1 1 (Note1)
(Note 1) Tag label is included when su󰀩x code except for /SCT is specied.
A blank label is included when no TAGNO. is specied.

<Start-up and Safety Precautions> 12
IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
Table 2 Model and su󰀩x code
Model Su󰀩x code Option code Description
ZR802S - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Explosion-proof Zirconia Oxygen Analyzer, Converter
Conformity in
Hazardous location
-A
-B
-C
-D
-M
- - - - - - - - - -
- - - - - - - - - -
- - - - - - - - - -
- - - - - - - - - -
- - - - - - - - - -
EU/UK -Type Examination certicate of conformity for “d” and “t”
(ATEX/UKEX) (*3)
US certicate of conformity for “d” ,”t”, and Class I, II, III Division 1
(by FM) (*4)
Canadian certicate of conformity for “d” and “t” (CSA) (*4)
IECEx certicate of conformity for “d” and “t” (*3) (*5)
China Ex certicate of conformity for “d” and “t” (by NEPSI) (*3)
Converter thread -M
-T
- - - - - - - - - -
- - - - - - - - - - M20 x 1.5 mm
1/2 NPT
Digital communication -H
-M
-E
- - - - - - - - - -
- - - - - - - - - -
- - - - - - - - - -
HART
HART+Modbus RS485
HART+Modbus Ethernet
─-N - - - - - - - - - - Always -N
─-N - - - - - - - - - - Always -N
Options /SCT
/H
/CJ
/AI
/AC
/RC
TAGNO. Engraved on the metal nameplate (*1)
Awning hood
Cold junction temperature compensation (with Pt1000
resistance thermometer) (*2)
Analog input with no power supply
With auto Calibration Output
Rugged Coating (epoxy + urethane coating)
*1: When su󰀩x code except for /SCT is specied, it will be supplied the tag label with TAGNO. printed.
*2: Connect the supplied Pt1000 resistance thermometer for cold junction temperature compensation to CJ terminal,when /CJ is
specied.
*3: Only “-M” can be specied to the converter thread.
*4: Only “-T” can be specied to the converter thread.
*5: If you want to order Taiwan Ex specication, please select -D. (Taiwan Ex registration based on IECEx)

<Start-up and Safety Precautions> 13
IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
2. Wiring and Installation
Open the front panel and remove the shield cover and then install the cable glands. The shield
cover will be re-installed after the wiring is completed.
For details, refer to the User’s Manual IM 11M13G01-02EN.
2.1 Installation site
The ZR802S is weatherproof and can be installed both inside and outside (Construction: NEMA/
CSA TYPE 4X). It should, however, be installed as close as possible to the sensor to avoid long
cable runs between the instrument and sensor.
Select an installation site where the ambient temperature, humidity and power voltage are within
the limits of the instrument specications as below. If the instrument is installed outside and
exposed to direct sunlight, a sun shade hood should be used.
Ambient Operating Temperature: -20 to +55ºC
Storage Temperature: -30 to +70ºC
Humidity: 10 to 90% RH at 40ºC (Non-condensing)
Power Supply Voltage: Ratings; 100 to 240 V AC
Acceptable range; 85 to 264 V AC
Power Supply Frequency: Ratings; 50/60 Hz
Acceptable range; 47 to 63 Hz
Power Consumption: Max. 800 VA, approx. 330 VA for ordinary use.
Select an installation site that meets the following conditions.
• Mechanical vibrations and shocks are negligible
• No relay switch and power switch are installed close to the converter
• There is space for cable connection beneath the cable glands
• Not exposed to direct sunlight or severe weather conditions
• Maintenance is possible
• No corrosive atmosphere
The ZR802S can be mounted on a wall or pipe when the mounting kit is ordered. For dimensional
information please refer to the User’s Manual IM 11M13G01-02EN.
2.2 Open and Close
nOpen
Remove the plugs, bolts, and washers at six positions respectively.
NOTE Be careful not to lose the washer when attaching or detaching.
nClose
• Tighten the plug/bolt with a 42 N·m.
• Be sure to install the washer. Doing so may damage the seating surface of the cover.
Plug
Bolt
Washer

<Start-up and Safety Precautions> 14
IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
NOTE Make sure the amplier is switched ON prior to closing the enclosure.
Switch
2.3 Wiring
nPreparation
Power supply and relay contact should be connected rst. Those terminals are behind the shield
cover. Next, connect the others. For details, refer to the User’s Manual IM 11M13G01-02EN.
Read it carefully before wiring.This manual describes how to use the ZR802S with Yokogawa’s
sensors. Please read carefully this manual and the instruction manuals relevant to those sensors
you use before using this instrument.
WARNING
• Cables that withstand temperatures of at least 75°C should be used for wiring.
• Wiring work should be performed to meet IP66 or higher requirements.
• Use cables that comply with UL2556VW-1 or equivalent.
• Always place the shield cover over the power supply and contact terminals for safety
reasons and to avoid interference.
Shield
cover
nCables, Terminals, glands and conduit adapter
The ZR802S is supplied with terminals suitable for the connection of nished wires in the size
range of 0.13 to 2.5 sq.mm. (26 to 14 AWG). The cable glands supplied will form a tight seal on
cables with an outside diameter of 6 to 12 mm (0.24 to 0.47 inches). Unused cable entry holes
must be sealed with cable glands including the close up plugs supplied.
For details, refer to the User’s Manual IM 11M13G01-02EN.

<Start-up and Safety Precautions> 15
IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
nWiring the power supply
CAUTION
Make sure the power supply is switched o󰀨. Power rating must comply with ZR802S
specication. Power voltage must match with the one indicated on the name plate.
WARNING
● You must install external power supply switch or circuit breaker for power supply.
● The external power supply switch or a circuit breaker must comply with a current rating of 5A
or IEC60947-1 or IEC60947-3
● Yokogawa recommend installing the external power supply switch, circuit breaker and
ZR802S converter all in the same location.
● Install the external power supply switch or circuit breaker to the place where operators
access easily. To alert users, put a label on the external power switch.
● Wire cables of power supply, contact output securely with cable rack, conduit and vinyl
band. Unplugged cables are dangerous and may cause an electric shock.
You should check local safety regulation to see if you shall install external circuit breaker. Follow
the local regulation and install if necessary.
ZR802S is protected by fuse which provides overcurrent protection of inner circuit.
Specic current and voltage ratings of fuse vary depending on power system. Use always a time-
delay fuse for 250 VAC fuse in accordance with IEC60127.
WARNING
Fuse replacement should be performed only by a qualied service personnel. See Chapter 4.
MAINTENANCE, Fuse.
lAccess to terminal and cable entry
The power supply terminals are behind the shield cover.
Guide the power cables through the gland. The terminals will accept wires of 2.5 mm2(14 AWG).
Always use cable nishings. For details, refer to the User’s Manual IM 11M13G01-02EN.
lPower supply terminals
Connect power supply to the power supply terminals.
For details, refer to the User’s Manual IM 11M13G01-02EN.
AC power terminals

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
lGrounding the converter
For the safety of the user and to protect the instrument against interference, the housing must
always be connected to ground. This has to be done by a cable with large cross-sectional area.
This cable can be xed to the bottom of the housing or the internal ground connections. For
details, refer to the User’s Manual IM 11M13G01-02EN.
M4 screw
M5 screw
WARNING
The minimum cross sectional area of the protective grounding wire should be 0.75 mm2. Use
cables with a cross section of 0.75 - 2.1 mm2.
nWiring the contact signals
lContact outputs
The ZR802S unit’s four contacts (switches) that can be wired and congured to suit user
requirements. Contact S4 is programmed as a fail-safe contact. Refer to the User’s Manual IM
11M13G01-02EN for contact outputs setup.
Use a cable with the rated voltage of 300 V AC or higher and with the electric current capacity
according to the load connected to contact output.
lContact inputs
For details, refer to the User’s Manual IM 11M13G01-02EN.
nWiring the mA-input/ output signals
lmA-input signals
The mA-inputs receive current signals of 4-20 mA. Should be used the cable beyond 30 V AC.
It is necessary to use screening/shielding on the input signal cables.
For details, refer to the User’s Manual IM 11M13G01-02EN.
lmA-output signals
The output signals consist of current signals of 4-20 mA. The maximum load can be 550 ohms on
each. Should be used the cable beyond 30 V AC. It is necessary to use screening/shielding on
the output signal cables. For details, refer to the User’s Manual IM 11M13G01-02EN.
nWiring the sensor
The ZR802S can be used with a wide range of commercially available sensor types, both from
Yokogawa and other manufacturers.
Pin terminal, ring terminal and spade terminal can be used.
For details, refer to the User’s Manual IM 11M13G01-02EN.
nWiring the communication
The ZR802S can equip Ethernet (Modbus TCP) communication, RS-485 (Modbus RTU)
communication.
It is necessary to use screening/shielding on the communication cable.
For details, refer to the User’s Manual IM 11M13G01-02EN

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
3. Operation
When all wiring is completed, turn on the power to the instrument. Make sure that the LCD
screen turns on, and then wait for the Home display appears. If congurations are not proper, an
error indicator may be displayed, or the measurement values displayed may be incorrect. Check
the initial settings and change them to suit your purpose.
For details, refer to the following User’s Manual.
Contents Document number
ZR22S and ZR802S
Explosion-proof Zirconia Oxygen Analyzer IM 11M13G01-02EN
ZR802G and ZR802S
Zirconia Oxygen/Humidity Analyzer, Converter
HART Communication
TI 11M12G01-61EN
ZR802G and ZR802S
Zirconia Oxygen/Humidity Analyzer, Converter
MODBUS Communication
TI 11M12G01-62EN
lChange language
The default language setting for the ZR802S is English. To select a di󰀨erent language other than
English, refer to the User’s Manual IM 11M13G01-02EN.
4. Maintenance
nPeriodic maintenance
The ZR802S requires very little periodic maintenance, except to make sure the front window is
kept clean in order to permit a clear view of the display and allow proper operation of the touch
panel. If the window becomes soiled, clean it using a soft damp cloth or soft tissue.
To deal with more stubborn stains, a neutral detergent may be used.
When you must open the front cover and/or glands, make sure that the seals are clean and
correctly tted when the unit is re-assembled in order to maintain the housing’s weatherproof
integrity against water and water vapor.
CAUTION
Never use harsh chemicals or solvents. In the event that the window does become heavily
stained or scratched, refer to the parts list for replacement part numbers.
lBattery
The ZR802S contains a lithium cell (battery) to support the clock function when the power is
switched o󰀨. The cell has an expected working life of 10 years. Should this cell need to be
replaced, contact your nearest Yokogawa service center.
lFuse
There is a circuit board mounted fuse protecting the instrument. If a fuse blows soon after the
change, contact your nearest Yokogawa service center.

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
5. Explosion protected Type
Instrument
In this section, further requirements and di󰀨erences for explosion proof type instrument are
described. For explosion protected type, the description in this section is prior to other description
in this User’s Manual.
CAUTION
ZR802S has been tested and certied as being explosion proof. Please note that severe
restrictions apply to these instrument’s construction, installation, external wiring, maintenance
and repair. A failure to abide by these restrictions could make the instrument a hazard to operate.
nZR802S (General Instruction)
lInstallation
Refer to chapter 3 ot the IM 11M13G01-02EN for other than that described below.
• In order to prevent the earthing conductor from loosening, the conductor must be secured to
the terminal, tightening the screw with torque of approx. 2.0N·m (M5) or 1.2N·m (M4). Care
must be taken not to twist the conductor.
• Unused entries shall be closed with suitable certied blanking elements.
• Cable entry devices suitable for the thread form and the size of the cable entries must be
used, according to the following marking on the equipment
Marking Screw form / size
M ISO M20x1.5
N ANSI 1/2NPT
• When installing the equipment, the selected Type of Protection should be ticked as follows.
Ex db IIC T6 Gb
Ex tb IIIC T85 °C Db
lOperation
WARNING
POTENTIAL ELECTROSTATIC CHARGING HAZARD
• In hazardous areas, risk from electrostatic discharge and propagating brush discharges
caused by rapid ow of dust shall be avoided. Avoid any actions which generate
electrostatic charges, such as rubbing the equipment with a dry cloth.
WARNING
DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT
• Take care not to generate mechanical spark when access to the equipment and the
peripheral devices in hazardous locations.
• Do not damage the mating surface of the case and cover.
CAUTION
All the blind plugs which accompany the ZR802S upon shipment from the factory are certied
by the applicable agency in combination with those analyzers. The plugs for cable entries which
are marked with the symbols “ Ex” on their surfaces are certied only in combination with the
ZR802S.

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
l Specic condition of use
1. Precaution shall be taken to minimize the risk from electrostatic discharges on the non-
metallic parts (excluding glass parts) or coated parts of the equipment.
2. Flameproof joints are not intended to be repaired. Contact Yokogawa representative or
Yokogawa o󰀩ce.
3. The fasteners used to fasten the cover and case shall only be replaced with Yokogawa
fastener, Part number: K8001MD.
Special fasteners
Figure 5.1 Special fasteners
lMaintenance and repair
WARNING
• A modication of the equipment would no longer comply with the construction described in
the certicate documentation.
• Only personnel authorized by Yokogawa Electric Corporation can repair the equipment.
n ZR802S-A (EU/UK -Type Examination certicate of conformity (ATEX/
UKEX))
lTechnical data
• Applicable standards
EN IEC 60079-0
EN 60079-1
EN 60079-31
EN 60529 + A1 + A2
• Certicate No.
ATEX: FM21ATEX0052X
UKEX: FM21UKEX0182X
Note: The symbol “X” placed after the certicate number indicates that the equipment is subjected to specic conditions of use.
Refer to specic condition of use.
• Specications
Refer to chapter 2 of the IM 11M13G01-02EN for other specications than that described
below.
• Equipment ratings (Ex marking)
II 2 G Ex db IIC T6 Gb
II 2 D Ex tb IIIC T85 °C Db
Note: “” is the checkbox for selecting type of protection. Select the type of protection and check one of “□” on the nameplate.
Once the type of protection is selected, it shall not be changed.
• Enclosure
IP66
• Ambient temperature
-20 to +55°C

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IM 11M13G01-01EN 1st Edition : Mar. 01, 2023-00
lInstallation
Refer to chapter 3 of the IM 11M13G01-02EN for other than that described below.
• The equipment shall be installed in accordance with EN 60079-14 and relevant local codes
and requirements.
• Cable glands, adapters and/ or blanking elements shall be installed so as to maintain the
specied type of protection(s) and the rating of the equipment.
Nameplate
Figure 5.2 Example of nameplate (Design and texts may be changed)
• MODEL: Specied model code
• SUFFIX: Specied su󰀩x code
• STYLE: Specied style code
• SUPPLY: Specied supply voltage and wattage
• Tamb: Specied ambient temperature range
• No.: Serial number
• MANUFACTURED: Month and year of production
Ex marking:
II 2 G Ex db IIC T6 Gb
II 2 D Ex tb IIIC T85 °C Db
Note: “” is the checkbox for selecting type of protection. Select the type of protection and check one of “□” on the nameplate.
Once the type of protection is selected, it shall not be changed.
• Enclosure: IP66
• Certicate No.
ATEX: FM21ATEX0052X
UKEX: FM21UKEX0182X
• ZIP CODE 180-8750 : 2-9-32 Nakacho, Musashino-shi, Tokyo
WARNING
DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE MAY BE PRESENT.
POTENTIAL ELECTROSTATIC CHARGING HAZARD.