YOKOGAWA WE410 Installation and operation manual

User’s
Manual WE410, WE420, WE430, WE440
WET CHEMISTRY ANALYZER
Safety Precautions and Protection of Environment
IM 12Y18A00-01EN
IM 12Y18A00-01EN
1st Edition
This Start-up Manual explains mainly the installation and wiring of WE410,
WE420, WE430 and WE440.
For detailed information and other information, the User’s Manual of
WE410, WE420, WE430 and WE440 should be referred to.
Draft

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uIntroduction
Thank you for purchasing WE410, WE420, WE430 and WE440 WET CHEMISTRY ANALYZER.
This Instructor’s Manual contains all essential information for the user to make full use of WE410,
WE420, WE430 and WE440.
Please read the following respective documents before installing and using WE410, WE420,
WE430 and WE440.
The related documents are listed as follows.
General Specications
Contents Document number Note
Model WE410 Silica Analyzer GS 12Y18A01-01EN Online
Model WE420 Sodium Analyzer GS 12Y18A02-01EN Online
Model WE430 Hydrazine Analyzer GS 12Y18A03-01EN Online
Model WE440 Phosphate Analyzer GS 12Y18A04-01EN Online
“EN” in the document number is the language code.
User’s Manual
Contents Document number Note
WE410, WE420, WE430, WE440
WET CHEMISTRY ANALYZER
Safety Precations and Protection of Environment
IM 12Y18A00-01EN Attached to the product
(printed manual) (This manual)
Model WE410 Silica Analyzer IM 12Y18A01-01EN Online manual
Model WE420 Sodium Analyzer IM 12Y18A02-01EN Online manual
Model WE430 Hydrazine Analyzer IM 12Y18A03-01EN Online manual
Model WE440 Phosphate Analyzer IM 12Y18A04-01EN 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.
You can download the latest documents from our website. Scan QR code.
https://www.yokogawa.com/an/wet-chemistry-analyzers/download/
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.
No. IM 12Y18A00-01EN 1st Edition : Jul. 2019 (YK)
All Rights Reserved Copyright © 2019, Yokogawa Electric Corporation

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nNotes on Handling User’s Manuals
• Please provide the user’s manuals to your end users so that they can keep the user’s
manuals 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.
nTrademark 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.
nProduct Disposal
The instrument should be disposed of in accordance with local and national legislation/
regulations.
nWarranty and service
Yokogawa products and parts are guaranteed free from defects in workmanship and material
under normal use and service for a period of (typically) 12 months from the date of shipment from
the manufacturer.
Individual sales organizations can deviate from the typical warranty period, and the conditions of
sale relating to the original purchase order should be consulted. Damage caused by wear and
tear, inadequate maintenance, corrosion, or by the e󰀨ects of chemical processes are excluded
from this warranty coverage.
Warranty claims should be contact service department of the relevant sales organization for
replacement (at Yokogawa discretion). The following information must be included.
• Part number, model code and serial number
• Original purchase order and date
• Length of time in service and a description of the process
• Description of the fault, and the circumstances of failure
• Process/environmental conditions that may be related to the failure of the device.
• A statement whether warranty or non-warranty service is requested
• The name and phone number of a contact person who can be reached for further
information.

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uSafety Precautions
WARNING
Installation and wiring
WE410, WE420, WE430 and WE440 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.
Do not use an abrasive or organic solvent in cleaning the instrument.
Electrostatic discharge
WE410, WE420, WE430 and WE440 contain 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.
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.
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.

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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.
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.

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uCE marking products
nAuthorized 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 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 the batteries:
This is an explanation about the EU Battery Directive. This directive is only valid in the EU.
Batteries are included in this product. Batteries incorporated into this product cannot be removed
by yourself. Dispose them together with this product.
When you dispose this product in the EU, contact your local Yokogawa Europe B.V.o󰀩ce.
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.

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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.
WE410/WE440
  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
器产品所适用的环境保护期限，6种有害物质的含有量都低于GB/T26572所规定
的限量要求以下。
WE420/WE430
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。

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uCompliant Standards
Model WE410, WE440
Safety: EN61010-1
CAN/CSA-C22.2 No. 61010-1
CAN/CSA-C22.2 No. 61010-2-081
UL Std No. 61010-1
UL Std No. 61010-2-081
Installation altitude: 2000 m or less
Category based on IEC 61010-1: II (Note 1)
Pollution degree based on IEC 61010-1:2 (Note 2)
Note 1: Installation category, so called overvoltage category, species impulse withstanding voltage. Category II is for electrical
equipment.
Note 2: Pollution degree indicates the degree of existence of solid, liquid, gas or other inclusions which may reduce dielectric
strength. Degree 2 indicates the normal indoor environment.
EMC: EN 61326-1 Class A,Table 2
EN 61326-2-3
EN 61000-3-2
EN 61000-3-3
RCM: EN 61326-1 Class A, Table 2
Korea Electromagnetic Conformity Standard Class A
RoHS: EN50581
Model WE420, WE430
Safety: EN61010-1
CAN/CSA-C22.2 No. 61010-1
UL Std No. 61010-1
Installation altitude: 2000 m or less
Category based on IEC 61010-1: II (Note 1)
Pollution degree based on IEC 61010-1:2 (Note 2)
Note 1: Installation category, so called overvoltage category, species impulse withstanding voltage. Category II is for electrical
equipment.
Note 2: Pollution degree indicates the degree of existence of solid, liquid, gas or other inclusions which may reduce dielectric
strength. Degree 2 indicates the normal indoor environment.
EMC: EN 61326-1 Class A,Table 2
EN 61326-2-3
EN 61000-3-2
EN 61000-3-3
RCM: EN 61326-1 Class A, Table 2
Korea Electromagnetic Conformity Standard Class A
RoHS: EN50581

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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.
R-R-YHQ-
EEN476-1
YYYY.MM
Yxxxxxxx
WE410, WE440
R-R-YHQ-
EEN476-2
YYYY.MM
Yxxxxxxx
WE420, WE430

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l Model and su󰀩x code
Model Su󰀩x code Option
code
Description
WE410 ···························· ··············· Silica Analyzer
Range -S ··············· Standard range 0 - 5000 ppb
Housing -N ··············· Always -N
Type -AA ··············· General purpose
Spare -N ··············· Always -N
Language -E ··············· Always -E
Model Su󰀩x code Option
code
Description
WE420 ···························· ··············· Sodium Analyzer
Range -S ··············· 0.30 ppb - 200 ppm or 0.10 ppb - 10 ppm
Reagent selection dependent
Housing -N ··············· Always -N
Type -AA ··············· General purpose
Spare -N ··············· Always -N
Language -E ··············· Always -E
Model Su󰀩x code Option
code
Description
WE430 ···························· ··············· Hydrazine Analyzer
Range -S ··············· Standard range 0 ppb - 200 ppb
Housing -N ··············· Always -N
Type -AA ··············· General purpose
Spare -N ··············· Always -N
Language -E ··············· Always -E
Model Su󰀩x code Option
code
Description
WE440 ···························· ··············· Phosphate Analyzer
Range -S ··············· Standard range 0.2 - 50 ppm
Housing -N ··············· Always -N
Type -AA ··············· General purpose
Spare -N ··············· Always -N
Language -E ··············· Always -E
nChecking accessories
The instrument is shipped with standard accessories. Optional accessories are sold separately if
necessary. Make sure the accessories in Table 1 are included.
Table 1 Standard accessories
Product Name Quantity Remark
WE410 Filter 1pcs 250 Filter Strainer
WE420 Sodium sensing
electrode
1 set Parts No K9705CC
Reference electrode 1 set Parts No K9705CD
WE430 Iodide sensing
electrode
1 set Parts No K9705CG
Reference electrode 1 set Parts No K9705CH
WE440 Filter 1pcs 250 Filter Strainer

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2. Wiring and Installation
For details, refer to the User’s Manual.
2.1 Installation site
WE410, WE420, WE430 and WE440 can be installed inside only.
Select an installation site where the ambient temperature and humidity are within the limits of the
instrument specications as below.
Ambient Operating Temperature: 5 to 45 °C (41 to 113°F)
Storage Temperature: -20 to 60 °C (-4 to 140 °F)
Humidity: 10 to 90% at 40ºC (104 °F) (Non-condensing)
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
For dimensional information please refer to the User’s Manual.
2.2 Wiring
2.2.1 Preparation
Power supply and relay contact should be connected rst. Next, connect the others. For details,
refer to the User’s Manual. Read it carefully before wiring.This manual describes how to use
WE410, WE420, WE430 and WE440 with Yokogawa’s or other companies’ 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.
• Use cables that comply with UL2556VW-1 or equivalent.
• Do not operate with the electronics enclosure door open.
2.2.2 Cables, Terminals, glands and conduit adapter
WE410, WE420, WE430 and WE440 are 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).
For details, refer to the User’s Manual.
2.2.3 Wiring the power supply
CAUTION
Make sure the power supply is switched o󰀨. Power rating must comply with WE410, WE420,
WE430 and WE440 specications. Power voltage must match with the one indicated on the
name plate.

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WARNING
● Do not apply electrical power to visibly damaged components,as injury or further equipment
damage may occur.
● 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
WE410, WE420, WE430 and WE440 converters 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.
WE410, WE420, WE430 and WE440 are 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.
lPower supply terminals
Connect power supply to the power supply terminals.
For details, refer to the User’s Manual.
<WE410, WE440>
WE410, WE440 Electrical wiring ports

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WE410, WE440 AC power terminal wire connections
Analyzer Terminal Destination North America Wire Color European Wire Color
HOT or L ( Line) black brown
Protective Earth Ground (PG) green green with yellow tracer
Neutral (n) white blue
AC POWER
CONNECTIONS
WE410, WE440 AC power connections
<WE420, WE430>
Terminal connector
WE420, WE430 AC Power Conection
WARNING
The minimum cross sectional area of the protective grounding wire should be 0.75 mm2. For
CSA safety standard, use cables with a cross section of 0.75 - 2.1 mm2.

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3. Maintenance
nPeriodic maintenance
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.
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
WE410, WE420, WE430 and WE440 contain 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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Revision record
2019/071st Edition
Newly released.
Yokogawa Electric Corporation
2-9-32 Nakacho, Musashino-shi, Tokyo 180-8750, JAPAN
http://www.yokogawa.com/