YOKOGAWA FLXA202 User manual

User’s
Manual
FLXA202 / FLXA21
2-Wire Analyzer
Installation and Wiring
(Introduction and General Description)
IM 12A01A03-01EN
IM 12A01A03-01EN
1st Edition

i
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
uIntroduction
Thank you for purchasing the FLXATM202/FLXATM21 2-Wire Analyzer.
Please read the following respective documents before installing and using the FLXA202/FLXA21.
When the FLXA21 with the output of FOUNDATION Fieldbus or PROFIBUS PA Communication
is used, please refer to the User’s Manual, IM 12A01A02-71E or IM 12A01A02-72E, too.
The related documents are as follows.
General Specications
Contents Document number Note
FLXA202 2-wire Analyzer GS 12A01A03-01EN For FLXA202. Online manual
FLXA21 2-wire Analyzer GS 12A01A02-01E For FLXA21. Online manual
FLXA21 2-wire Analyzer
FOUNDATION Fieldbus Communication GS 12A01A02-71E For FLXA21. Online manual
FLXA21 2-wire Analyzer
PROFIBUS PA Communication GS 12A01A02-72E For FLXA21. Online manual
* the “E” or “EN” in the document number is the language code.
User’s Manual
Contents Document number Note
FLXA202/FLXA21 2-wire Analyzer
Start-up Manual IM 12A01A02-12E Attached to the product, printed document
FLXA202/FLXA21 2-wire Analyzer
Safety Precautions IM 12A01A02-20E
For intrinsic safety, nonincendive and Type n.
Attached to the product, printed document
FLXA202/FLXA21 2-wire Analyzer
Installation and Wiring IM 12A01A03-01EN Online manual (This manual)
FLXA202/FLXA21 2-wire Analyzer
Operation of pH/ORP IM 12A01A03-31EN For pH/ORP (-P1) selection Online manual
FLXA202/FLXA21 2-wire Analyzer
Operation of SC IM 12A01A03-32EN For Conductivity (SC) (-C1) selection Online manual
FLXA202/FLXA21 2-wire Analyzer
Operation of ISC IM 12A01A03-33EN
For Inductive conductivity (ISC) (-C5) selection
Online manual
FLXA202/FLXA21 2-wire Analyzer
Operation of DO IM 12A01A03-34EN For Dissolved oxygen (DO) (-D1) selection Online manual
FLXA202 2-wire Analyzer
Operation of SENCOM SA-pH/ORP IM 12A01A03-36EN For pH/ORP of SENCOM SA (-S5) selection Online manual
FLXA202 2-wire Analyzer
Operation of SENCOM SA-SC IM 12A01A03-37EN
For Conductivity (SC) of SENCOM SA (-S5)
selection
Online manuall
FLXA21 2-wire Analyzer
FOUNDATION Fieldbus Communication IM 12A01A02-71E For FLXA21, output “-F” Online manual
FLXA21 2-wire Analyzer
PROFIBUS PA Communication IM 12A01A02-72E For FLXA21, output “-P” Online manual
* The “E” or “EN” in the document number is the language code.
Note: Please read the Safety Precautions (IM 12A01A02-20E) before using the product.
 TheSafetyPrecautionsincludesControlDrawingsofintrinsicsafety,nonincendiveandTypenthatdescribesspeciccondition
forusingFLXA202/FLXA21inhazardous/classiedlocation.
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
FLXA202 2-wire Analyzer
Selection Guide for Intrinsic Safety type
Associated Apparatus
TI 12A01A02-42EN Online manual
FLXA202/FLXA21 2-Wire Analyzer
HART Communication TI 12A01A02-60E Online manual
* The “E” or “EN” in the document number is the language code.
No. IM 12A01A03-01EN 1st Edition :Jan. 2021 (YK)
All Rights Reserved Copyright © 2021, Yokogawa Electric Corporation

ii
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
You can download the latest documents from our website. Scan QR code.
http://www.yokogawa.com/an/xa202/download/
Read corresponding user’s manual for details about sensors or other related products.
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.
nComposition of this User’s Manual
TheFLXA202/FLXA212-WireAnalyzero󰀨ersfollowingmeasurements:
pH/ORP (oxidation-reduction potential), conductivity (SC), inductive conductivity (ISC), dissolved
oxygen (DO), pH/ORP with SA11 SENCOMTM Smart Adapter, SC with SA11 SENCOM Smart
Adapter.
This document explains mainly about installation and wiring, or common information on each
measurement.
Forotherinformationonoperation,congurationorcalibration,whichvariesdependingonthe
specication,seethecorrespondingmanualstitled“Operationof...”asshowninthenexttable.

iii
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
Model 1st input code Contents Document number
FLXA202 FLXA21
All
Start-up Manual IM 12A01A02-12E
FLXA202 FLXA21 Safety Precautions IM 12A01A02-20E
FLXA202 FLXA21 Installation and Wiring (This manual) IM 12A01A03-01EN
FLXA202 FLXA21 -P1 Operation of pH/ORP IM 12A01A03-31EN
FLXA202 FLXA21 -C1 Operation of SC IM 12A01A03-32EN
FLXA202 FLXA21 -C5 Operation of ISC IM 12A01A03-33EN
FLXA202 FLXA21 -D1 Operation of DO IM 12A01A03-34EN
FLXA202 -S5 Operation of SENCOM SA-pH/ORP IM 12A01A03-36EN
FLXA202 -S5 Operation of SENCOM SA-SC IM 12A01A03-37EN
FLXA21 FOUNDATION Fieldbus Communication IM 12A01A02-71E
FLXA21 PROFIBUS PA Communication IM 12A01A02-72E
nTrademark Notices
FLEXA, FLXA, SENCOM are trademarks or registered trademarks of Yokogawa Electric
Corporation.
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.
nTerminology
SENCOM SA: SA11 SENCOM Smart Adapter, or pH/ORP sensors or conductivity (SC) sensors
to which SA11 SENCOM SA is attached, including PH8E*P...V, FU20-VS,
SC4AJ, SC8SG etc..
nFLXA202/FLXA21’s fonts
(c) Copyright 2000-2001 /efont/ The Electronic Font Open Laboratory. All rights reserved.
Redistributionanduseinsourceandbinaryforms,withorwithoutmodication,arepermitted
provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions
and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of
conditions and the following disclaimer in the documentation and/or other materials provided
with the distribution.
3. Neither the name of the team nor the names of its contributors may be used to endorse or
promoteproductsderivedfromthisfontwithoutspecicpriorwrittenpermission.
THIS FONT IS PROVIDED BY THE TEAM AND CONTRIBUTORS “AS IS” AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE TEAM OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
WAY OUT OF THE USE OF THIS FONT, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE.

Blank Page

Toc-1
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
FLXA202 / FLXA21
2-Wire Analyzer
Installation and Wiring
CONTENTS
IM 12A01A03-01EN 1st Edition
uIntroduction....................................................................................................i
1. INTRODUCTION AND GENERAL DESCRIPTION.................................. 1-1
1.1 Instrument check .............................................................................................. 1-3
1.2 Screen operation............................................................................................... 1-6
1.3 Passwords ....................................................................................................... 1-11
1.4 Regulatory Compliance.................................................................................. 1-11
1.5 Model & Su󰀩x Codes ..................................................................................... 1-16
2. WIRING AND INSTALLATION .................................................................. 2-1
2.1 Installation site .................................................................................................. 2-3
2.2 Removing the wiring cover.............................................................................. 2-4
2.3 Installing the cable glands ............................................................................... 2-5
2.4 Wiring the power supply .................................................................................. 2-7
2.4.1 Grounding .......................................................................................... 2-8
2.4.2 Connection of the power supply ........................................................ 2-9
2.4.3 Wiring cover ..................................................................................... 2-10
2.5 Sensor wiring .................................................................................................. 2-11
2.5.1 Wiring the pH/ORP sensor .............................................................. 2-15
2.5.2 Wiring the conductivity (SC) sensor................................................. 2-18
2.5.3 Wiring the inductive conductivity (ISC) sensor ................................ 2-18
2.5.4 Wiring the dissolved oxygen (DO) sensor ....................................... 2-19
2.5.5 Wiring sensors with SENCOM SA................................................... 2-19
2.6 Mounting methods.......................................................................................... 2-21
2.7 Operation ......................................................................................................... 2-22
3. MAINTENANCE......................................................................................... 3-1
4. TROUBLESHOOTING .............................................................................. 4-1
Customer Maintenance Parts List................................... CMPL 12A01A03-01EN
Customer Maintenance Parts List......................................CMPL 12A01A02-01E
Revision Record.......................................................................................................i

Blank Page

<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-1
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
1. INTRODUCTION AND GENERAL
DESCRIPTION
This manual describes how to use the FLXA202/FLXA21 with Yokogawa’s or other companies’
sensors. Please read carefully this manual and the instruction manual of the relevant sensor
before using this instrument.
ForthespecicationsoftheFLXA202/FLXA21,pleaserefertotheGeneralSpecications.(GS
12A01A03-01EN, GS 12A01A02-01E)
The FLXA202/FLXA21 2-Wire Analyzer can perform 4 kinds of measurements – pH/ORP
(oxidation-reduction potential), contacting conductivity (SC), inductive conductivity (ISC) or
dissolved oxygen (DO) – with the respective sensor module.
Up to two analog sensors can be connected. (pH/ORP, SC, ISC)
For dual sensor measurement, the combination of two same type analog sensor inputs – pH/
ORP and pH/ORP, SC and SC, and DO and DO – are available with two sensor modules.
In additin to conventional analog connections, digital sensor measurement using SA11 SENCOM
Smart Adapter is available.
1
ON
2
ON
Cable entry holes
Jumper holder
(provided only for
pH measurement)
Front view Front view with the front panel opened
Reboot switch
(Do not use it)
Terminal block
for power supply
LCD display
Slide switch
(for HART only)
Front panel
The first module
(The second module if any
is installed here.)
Figure 1.1 FLXA202 Parts names and descriptions

<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-2
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
1
ON
2
ON
Cable entry holes
Wiring cover 1 (for the first module)
Jumper holder
(provided only for
pH measurement)
Front view Front view with the front panel opened
Front view with all wiring covers removed
Reboot switch
(Do not use it)
Terminal block
for power supply
LCD display
Slide switch
(for HART only)
Wiring cover 2
(for the second module)
Front panel
The first module
(The second module if any
is installed here.)
Nameplate
(Wiring cover 3 for power
supply and grounding is
under the wiring cover 2.)
Figure 1.2 FLXA21 Parts names and descriptions

<1. INTRODUCTION AND GENERAL DESCRIPTION> 1-3
IM 12A01A03-01EN 1st Edition : Jan. 20, 2021-00
1.1 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
lFLXA202
Makesurethemodelandsu󰀩xcodeonthenameplatea󰀩xedtotheleftsideofthehousing.
Refer to 1.5 Model&Su󰀩xCodes
NOTE
Be sure to apply correct power to the unit , as detailed on the nameplate.
-D-B-D-AB-P1-P1
-A-N-LA-N-N/U/H6
Figure 1.3 Example of nameplate (FLXA202)
lFLXA21
Loosen four front panel screws of the FLXA21, open the panel to the left, and make sure the
modelandsu󰀩xcodeonthenameplatea󰀩xedtotheleftsideorinsideofthehousingagrees
with your order.Refer to 1.5 Model&Su󰀩xCodes
CAUTION
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 waterproof performance
will deteriorate.
NOTE
Be careful not to lose the four front panel screws.