YOKOGAWA ZX8D User manual

User’s
Manual Model ZX8D
Zirconia Oxygen Analyzer
IM 11G00E01-01EN
IM 11G00E01-01EN
6th Edition

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IM 11G00E01-01EN 6th Edition : May. 21, 2018-00
uIntroduction
Thank you for purchasing the ZX8D Zirconia Oxygen Analyzer.
Please read the following respective documents before installing and using the ZX8D Zirconia
Oxygen Analyzer.
The related documents are as follows.
General Specications
Model Contents Document number Note
IR202 Infrared Gas Analyzer GS 11G02Q02-01EN
IR400 NDIR TYPE INFRARED GAS ANALYZER
(5-COMPONENT ANALYZER) GS 11G02N01-01E
The “E” or “EN” in the document number is the language code.
User’s Manual
Model Contents Document number Note
ZX8D Zirconia Oxygen Analyzer IM 11G00E01-01EN (This manual)
IR202 Infrared Gas Analyzer IM 11G02Q02-01EN
IR400 Infrared Gas Analyzer IM 11G02N01-01E
The “E” or “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.
WARNING
• This unit is not explosion-proof type. Do not use it in a place with explosive gases to prevent
explosion, re or other serious accidents.
• When noxious gases such as CO or other gases are contained in the calibration gas, be
careful when venting or handling the instrument to avoid poisoning.
• When combustible gases are contained in measuring gas, check the gas composition and
instrument specications before use, or else the best performance may not be obtained or
there may be a danger of explosion.
Media No. IM 11G00E01-01EN 6th Edition : May 2018 (YK)
All Rights Reserved Copyright © 2016, Yokogawa Electric Corporation

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CAUTION
• This unit should be installed in a place which conforms to the conditions noted in the
instruction manual. Otherwise, it may cause electric shocks, re or malfunction of the unit.
• During installation work, care should be taken to keep the unit free from entry of cable chips
or other foreign objects. Otherwise, it may cause re, trouble or malfunction of the unit.
• The unit must be earthed as specied. Otherwise, it may cause electric shocks, malfunction,
etc.
• Be sure to use a power supply of correct rating. Connection of power supply of incorrect
rating may cause re.
• Wiring work must be performed with all the power supplies to OFF to prevent electric
shocks.
• Use wiring materials that match the rating of the unit. Use of wiring materials out of rating
may cause re.
• Wiring at a place which is exposed to water or rain, is prohibited in order to prevent electrical
shock or damage to the instrument.
• To avoid electrical shock, be sure to turn OFF the source power supply before work.
• To prevent burning your hands, be sure to turn OFF the source power supply before
cleaning the piping outlet. After power o󰀨, wait until the piping outlet cools down.
• Beware of acid uid inside the pipe. If acid uid should contact your skin or clothes,
immediately wash them with large amount of tap water. If they should splash onto your
eyes, seek medical attention at once.
• Do not use replacement parts other than those specied by the maker. Otherwise intended
performance may not be obtained, or accidents or faults may result.
• Replacement parts such as a maintenance part should be disposed of as incombustibles.
• If the cause of any fault cannot be determined despite reference to the instruction
manual, be sure to contact local sales representative or service o󰀩ce. If the instrument is
disassembled carelessly, you may have a shock hazard or injury.
• Do not use a replacement part other than specied by the instrument maker. Otherwise,
adequate performance will not be provided. Besides, an accident or fault may be caused.
l Specication check
When the instrument arrives, unpack the package with care and check that the instrument
has not been damaged during transportation. In addition, please check that the specication
matches the order, and required accessories are not missing. Specications can be
checked by the model codes on the nameplate. Refer to Chapter 2 Specications for the list
of model codes.

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u Safety 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.
n Warning 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.

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n Notes 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.
n Drawing 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.
n Product Disposal:
The instrument should be disposed of in accordance with local and national legislation/regulations.
n Trademark Acknowledgments
• 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.

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u CE marking products
n Authorized Representative in EEA
The Authorized Representative for this product in EEA is Yokogawa Europe B.V. (Euroweg 2,
3825 HD Amersfoort, The Netherlands).
n Identication Tag
This manual and the identication tag attached on a packing box are essential parts of the
product. Keep them together in a safe place for future reference.
n Users
This product is designed to be used by a person with specialized knowledge.
n 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 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.

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IM 11G00E01-01EN 6th Edition : May. 21, 2018-00
Model ZX8D
Zirconia Oxygen Analyzer
CONTENTS
IM 11G00E01-01EN 6th Edition
u Introduction....................................................................................................i
u Safety Precautions ......................................................................................iii
u CE marking products ..................................................................................v
1. Overview........................................................................................................1
2. Specications ...............................................................................................2
3. Name and Description of Each Part ...........................................................4
4. Installation.....................................................................................................5
4.1 Mounting method................................................................................................. 5
4.2 Piping .................................................................................................................... 6
4.3 Sampling ............................................................................................................... 7
4.4 Wiring method ...................................................................................................... 8
5. Operation.......................................................................................................9
5.1 Operating procedure ........................................................................................... 9
5.2 Preparation for operation.................................................................................... 9
5.3 Start of measurement .......................................................................................... 9
5.4 Shutdown.............................................................................................................. 9
6. Maintenance............................................................................................... 10
6.1 Daily inspection.................................................................................................. 10
6.2 Cleaning gas outlet............................................................................................ 11
6.3 Replacement of fuse.......................................................................................... 12
6.4 Output characteristic......................................................................................... 12
Revision Information ...............................................................................................i

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IM 11G00E01-01EN 6th Edition : May. 21, 2018-00
1. Overview
The zirconia oxygen analyzer utilizes a solid electrolyte consisting mainly of zirconia (ZrO2) which
conducts only oxygen ions at a high temperature. It is an oxygen sensor which measures, based
on the principle of an oxygen concentration cell, the electromotive force produced due to the
di󰀨erence in oxygen concentration between the measured gas and reference air. By combining
this analyzer with a sampling system including an infrared gas analyzer, it can accurately
measure oxygen concentration for a variety of applications including combustion equipment
control, air separation plants and laboratory use.