Yokogawa FLXA402T User Manual

User ’s Manual

FLXA402T Liquid Analyzer for Turbidity and Chlorine Operation of pH

IM 12A01G02-01EN

1st Edition

u Introduction

Thank you for purchasing the FLXATM402T Liquid Analyzer for Turbidity and Chlorine. This User’s Manual contains all essential information for the user to make full use of FLXA402T. Please read the following respective documents before installing and using the FLXA402T.

The related documents are listed as follows.

General Specications

Contents Document number Note

FC800D Non-reagent type Free Available Chlorine Analyzer

RC800D Reagent Type Residual Chlorine Analyzer

TB820D Right Angle Scattered Light Turbidity Analyzer

“EN” in the document number is the language code.

User’s Manual

Contents Document number Note

FLXA402T Liquid Analyzer for Turbidity and Chlorine Start-up and Safety Precautions

FLXA402T Liquid Analyzer for Turbidity and Chlorine Installation and Wiring

FLXA402T Liquid Analyzer for Turbidity and Chlorine Operation of Converter

FLXA402T Liquid Analyzer for Turbidity and Chlorine Operation of pH

FLXA402T Liquid Analyzer for Turbidity and Chlorine Operation of SC

“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

FLXA402T Liquid Analyzer for Turbidity and Chlorine MODBUS communication

“EN” in the document number is the language code.

You can download the latest documents from our website. Scan QR code.

http://www.yokogawa.com/an/xa402t/download/

GS 12F05B10-01EN Online manual

GS 12F04B10-01EN Online manual

GS 12E01B30-01EN Online manual

IM 12A01G01-01EN Attached to the product (printed manual)

IM 12A01G01-02EN Online manual

IM 12A01G01-03EN Online manual

IM 12A01G02-01EN Online manual (This manual)

IM 12A01G03-01EN Online manual

TI 12A01G01-62EN Online manual

Please read the individual user’s manuals for sensors/detectors and other related products.

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

n Notes 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.

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 Composition of this User’s Manual

FLXA402T Liquid Analyzer for Turbidity and Chlorine provides converter function to realize the following measurement according to user’s specication. FC (Free chlorine analyzer), RC (Residual chlorine analyzer),

TB (Right Angle Scattered Light Turbidity Analyzer), pH, Resistivity/Conductivity (SC).

This manual describes the operation (equipment setting, calibration) as a PH converter. For the parts common to the converter, refer to the other related documents that are separated as shown in the table below.

Contents FC800D RC800D TB820D pH

Introduction and general description Wiring and installation Converter operation (Setting, Maintenance, Troubleshooting)

Sensor operation (Setting, Calibration)

IM 12F05B10-

02EN

IM 12F04B10-

02EN

IM 12A01G01-02EN

IM 12A01G01-03EN

IM 12E01B30-

02EN

IM 12A01G0201EN (This

manual)

Conductivity

(SC)

IM 12A01G0301EN

n Trademark 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.

n Terminology

sensor(s): sensor, sensor unit, sensor module, SA11 + sensor SENCOM SA: SA11 SENCOM Smart Adapter or 1st (2nd) input “-CL” (SENCOM SA for

Chlorine ) or “-TB (SENCOM SA for Turbidity)”

analog sensor (module) selectable sensors when “-P1”, “-C1” is specied for 2nd input.

sensor connection number. : identifies connected sensors to 1st or 2nd input. 1-1 refers to

e.g. PH8E□P, PH4□, SC4AJ, SC210G

sensor connected for 1st input. 2-1 refers to sensor connected for 2nd input.

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

FLXA402T Liquid Analyzer for Turbidity and Chlorine Operation of pH

IM 12A01G02-01EN 1st Edition

CONTENTS

u Introduction ....................................................................................................i

1. Sensor Menu Outline ............................................................................... 1-1

2 Sensor menu ............................................................................................. 2-1

2.1 Detail ................................................................................................................... 2-1

2.2 Calibration ......................................................................................................... 2-6

2.3 Reset wellness ..................................................................................................2-6

2.4 Initialization ....................................................................................................... 2-7

2.5 Sensor settings ................................................................................................. 2-7

3. Sensor setting ........................................................................................... 3-1

3.1 Congure sensor ..............................................................................................3-1

3.1.1 Temperature settings ......................................................................... 3-1

3.1.2 Others ................................................................................................ 3-1

3.2 Measure setting ................................................................................................. 3-2

3.2.1 Temperature settings ......................................................................... 3-2

3.2.2 Temp compensation ........................................................................... 3-2

3.2.3 pH ....................................................................................................... 3-3

3.2.4 High/Low alarm setting ...................................................................... 3-3

3.3 Calibration settings ..........................................................................................3-4

3.3.1 Cal. set pH.......................................................................................... 3-4

3.3.2 Cal. Set others ................................................................................... 3-5

3.3.3 Cal. set temperature .......................................................................... 3-5

3.4 Wellness settings .............................................................................................. 3-6

3.4.1 Impedance settings ............................................................................ 3-6

3.4.2 Progress time ..................................................................................... 3-7

3.4.3 Dene SENCOM status ..................................................................... 3-7

4. Calibration pH ........................................................................................... 4-1

4.1 pH Calibration .................................................................................................... 4-2

4.1.1 pH Manual .......................................................................................... 4-2

4.1.2 Automatic Calibration ......................................................................... 4-2

4.2 Temperature calibration ..................................................................................4-3

Appendix References ............................................................................ App.-1

Revision Record .......................................................................................................i

Toc-1

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

Blank Page

<1. Sensor Menu Outline>

1. Sensor Menu Outline

Main/Home screen > “Sensor menu”. > “Detail” / “Calibration” / “Setting”

The operation is secured by password. See the section 5.4 in IM 12A01G01-03EN Operation of Converter.

Figure 1.1 Sensor menu

n Details

On Sensor menu, tap “Detail”. Read 2.1.

1-1

Figure 1.2 Sample image of Sensor details

On Sensor details screen, sensor status is displayed. turns the page to show the sensor status, maintenance information, PH module information or logbook.

n Calibration

On Home/Main screen, tap . On Sensor menu, tap for calibration of sensors.

Figure 1.3 Sample images of pH Calibration

For further information on sensor calibration, read chapter 4.

n Reset wellness

Go to Sensor menu> tap . Read 2.3 Reset wellness

n Initialization

On Sensor menu, tap . Read 2.4 Initialization.

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

<1. Sensor Menu Outline>

n Congure sensor

Converter menu or Sensor menu > “Setting”

Go to Converter menu to congure the setting of converter such as mA output, display setting.

Go to Sensor menu to congure the sensor setting such as calibration setting.

Figure 1.4 Left; before conguration Right; after conguration

When you change parameter, the changed parameter becomes highlighted. To save and overwrite the data, tap

Read 3. Sensor setting about sensor conguration.

1-2

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

<2. Sensor menu>

2 Sensor menu

Main screen > Sensor menu The following operation are available. Detail (details on sensors), Calibration (sensor calibration), Setting (sensor setting), etc.

2.1 2.2 2.3

2.52.4

Figure 2.1 Sensor menu

2.1 Detail

Go to Sensor menu > “Detail” to check details (setup, sensor wellness, calibration, and module production number). In case of trouble, when you contact Yokogawa service, please inform us of the module and FLXA402T software revision displayed on the Detail and module production number, revision number indicated on the nameplate attached to the instrument.

2-1

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

<2. Sensor menu>

2-2

*1: “----”is displayed, depending on a calibration or sensor conguration that a user implements.

*2: The number of log page goes as many as the connected sensors.

Figure 2.2 Sensor menu ow chart

IM 12A01G02-01EN 1st Edition : Mar. 25, 2021-00

<2. Sensor menu>

n Measurement value

l Sensor

Represents the measured electromotive force of sensor.

l Impedance 1

For a PH sensor, “Impedance” shows electrical resistance of the glass electrode. The FLXA402T checks the impedance to know damage of the electrode.

In case of “Input Impedance setting” is “High” and the measured input-1 impedance value is

higher than 100 kΩ, the display shows “MΩ RANGE”. If the measured input-1 impedance value is lower than 100 kΩ, the display shows “BAD”. If impedance is set to “Low”, the measured

impedance value is displayed. If Impedance measurement(A) is set to “Disabled”, “----”is displayed. You can change the setting

of Impedance measurement (A) only when PH sensor module is in use.

l Impedance 2

Impedance shows the electrical resistance of the reference electrode liquid junction. The liquid junction forms the electrolytic contact between the reference electrode and the measuring

electrode. Therefore, it must be kept clean and lled with conductive electrolyte. Otherwise the measurement will su󰀨er from instability, drift and measuring errors.

In case of “Input Impedance setting” is “High” and the measured impedance 2 value is higher

than 100 kΩ, the display shows “MΩ RANGE”. The measured impedance 2 value is lower than 100 kΩ, display shows “BAD”. If Impedance is set to “Low”, the measured impedance value is

displayed. If Impedance measurement(A) is set to “Disabled”, “----”is displayed. See 3.4.1 Impedance

settings for the details.

2-3

l Zero

Theoretically, pH_Zero is 0 mV in a bu󰀨er solution of pH 7. The ZERO value indicates the

condition of the sensor. The trend of ZERO drift of the sensor is used to predict the lifetime of the sensor.

ZERO can also be displayed in pH units and then it represents the pH value where the sensor output is 0 mV at 25ºC.

To set directly, go to Sensor menu> “Measure setting”> “Calibration setting”> “Zero/Slope/ITP”> “Zero”. Read 3.3.1 for the details.

l Slope

Slope indicates the sensor sensitivity. It is expressed as % of the theoretical value of the electromotive force characteristics of the sensor

The theoretical value of the electromotive force characteristic (100% slope) is 59.16 mV / pH (at 25° C) according to the NERNST equation. The slope can only be calibrated by two-point calibration using two pH solutions. A low slope indicates that the sensor is not clean or it indicates a bad sensor.

The SLOPE can also be displayed as mV/pH value at 25 ºC if the user has dened this variable

as mV/pH in user setting. To set directly, go to Sensor menu> “Measure setting”> “Calibration setting”> “Zero/Slope/ITP”>

“Slope”. Read 3.3.1 for the details.

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