Introduction - YOKOGAWA DO70G User Manual

Introduction

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The DO70G optical dissolved oxygen sensor uses the optical (fluorescence) measurement
method to continuously measure oxygen dissolved in water
Topics and information that need your special attention in handling the product are given in the
text of this manual along with cautionary notes, such as a warning or caution, depending on
their importance. Strictly observe these items from the standpoint of safety and prevention of
equipment damage. For a notation, such as a warning also indicated on the product, there is an
alert mark in the manual.
1. Confirming the Specifications
The DO70G sensor cable should have the specified length. The crimp-on terminals are either
pin-type or M4 ring-type.
Upon arrival of the purchased product, carefully unpack it and make sure the product has not
been damaged during transportation.
Verify the model code on a name plate adhered on the packaging box. For details of the model
code, see subsection 1.2.2.
2. Information Covered by This Manual
This manual covers all of the information on handling the DO70G optical dissolved oxygen
sensor, such as instructions on installation, inspection, and maintenance and service.
Note : In this manual, descriptions of the basic system assumes that the DO402G Dissolved Oxygen Converter or FLXA402 4-Wire
Converter is used.
Refer to the instruction manual for information on the converter connecting holders with the
DO70G and how to connect sensor cables.
Note that the instruction manuals listed in the following table are for the associated equipment
used with the EXA DO
Manuals for Associated Equipment Used with the EXA
Model
DO402G
FLXA402
DO70G
DOX10
PB350G
PB360G
DOX8HS
Note: Only the basic system of basic components are listed on the front panel.
Refer to respective instruction manual for information on recorders, annunciators and other instruments.
An exclusive User's Manual might be attached to the products whose suffix codes or option
codes contain the code "Z" (made to customers' specifications). Please read it along with this
manual.
n Trademark Notices
• EXA DO, FLXA are 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.
No. IM 12J05D04-01E
All Rights Reserved Copyright © 2012, Yokogawa Electric Corporation
Dissolved Oxygen Metering System.
TM
Title of Manual
Dissolved Oxygen Converter
4-Wire Converter
Optical Dissolved Oxygen Sensor
Power Supply Unit
Angled Floating Ball Holder
Vertical Floating Ball Holder
Submersion Type Holder (Style B)
8th Edition: July 2023 (YK)
Dissolved Oxygen Metering System
DO
Manual No.
IM 12J05D02-01E
IM 12A01F01-02EN
IM 12A01F05-01EN etc
IM 12J05D04-01E (This manual)
IM 12J05S01-01E
IM 19H1E1-01E
IM 19H1E2-01E
IM 19H1D2-01E
IM 12J05D04-01E
i
8th Edition : July 11, 2023