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IM 12J05D04-01E

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  Safety Precautions

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  Safety and Modification Precautions

•  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 specified 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.

•  Modification 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.

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  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 find mistakes or omissions in the user’s manuals, please 

contact our sales representative or your local distributor.

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  Product Disposal:

The instrument should be disposed of in accordance with local and national legislation/

regulations.

8th Edition : July 11, 2023

Summary of Contents for DO70G

Page 1: ...User s Manual Model DO70G Optical Dissolved Oxygen Sensor IM 12J05D04 01E IM 12J05D04 01E 8th Edition...

Page 2: ...mation 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 th...

Page 3: ...perator 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 d...

Page 4: ...s of warranty period Failure of components which are out of scope of warranty stated in instruction manual Failure caused by usage of software hardware or auxiliary equipment which Yokogawa did not su...

Page 5: ...Blank Page...

Page 6: ...2 Installing the Sensor and Connecting the Cable 2 1 2 1 Preparing for Installation 2 1 2 2 Installation 2 2 2 2 1 Selecting the Measurement Point 2 2 2 2 2 Selecting the Sensor Holder 2 3 2 2 3 Insta...

Page 7: ...Blank Page...

Page 8: ...ng ball or vertical floating ball holders In the submersion type holder the sensor can be automatically cleaned with jet sprayed water or air at regular intervals By selecting a suitable holder and cl...

Page 9: ...shape pin Weight Sensor Approx 0 1 kg Cable For E Approx 0 1 kg m 0 1 kg For D Approx 0 8 kg m 0 8 kg Power supply DO402G from DOX10 Power Supply Unit FLXA402 from FLXA402 The DOX10 may not be used de...

Page 10: ...r Option Code If you order only DO70G please make a separate order for the adaptor by Part No in the table below However if you are already using DOX8HS PB350G PB360G and DO70G you can use the existin...

Page 11: ...03E 05E 10E No cable type Approx 70 Approx 90 Approx 100 1500 L 3 m 5 m 10 m L 5 m 10 m 15 m 20 m Unit mm 12 7 Cable length code 05D 10D 15D 20D l Adaptor S3 PP Adaptor FPP 23 Pg13 5 DIN40430 30 5 26...

Page 12: ...the cable connector insert the sensor connector into the cable connector Note A weak pressure is sufficient for inserting it If a strong pressure is needed to insert it the connection position will b...

Page 13: ...r The assembly is submerged to the optimum point to obtain precise measurements This section explains how to select the measurement point and sensor holder 2 2 1 Selecting the Measurement Point Normal...

Page 14: ...is immune to large variations in the liquid level Since the wet part is smooth and less susceptible to catching flocs the sensor does not trap rubbish that mixes in with the SUM Related description S...

Page 15: ...r CAUTION Do not contaminate or wet the tip of the sensor cable when assembling the sensor If you will not begin wiring the sensor cable immediately take the protective measures necessary to prevent t...

Page 16: ...solved Oxygen Converter user s manual IM 12J05D02 01E For information on sensor cable to connect DO70G to DO402G refer to the user s manual IM 12J05D02 01E for DO402G Dissolved Oxygen Converter instru...

Page 17: ...Blank Page...

Page 18: ...t may occur DO402G Dissolved Oxygen Converter or FLXA402 4 Wire Converter detects these failures If a sensor error code appears on the display follow one of the procedures below 1 Clean the sensor sen...

Page 19: ...prepare 1 liter of the calibration solution for zero adjustment O Ring EPDM K9691KB For Adaptor Mounting Adaptor K9148NA K9148NB K9679CA For submersion type holder stainless steel S3 For submersion t...

Page 20: ...l Added a maintenance part on the list page 4 2 Deleted CMPL Jul 2017 3rd Edition Added Trademark Notices Product Disposal and Model name pages i ii 1 5 Dec 2015 2nd Edition P1 3 P3 5 Added coments of...

Page 21: ...Blank Page...

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