General - YOKOGAWA DO70G User Manual

Optical dissolved oxygen sensor
Table of Contents

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1.

General

Do not drop the sensor. Please handle it with care.
1.1
Features
• Long stability
The sensor will be ready for measurement approximately 10 minutes after turning on the
power.
The sensor can be used continuously and stably for a long time thanks to the stain-resistant
sensor cap and the measurement method which is less susceptible to disturbance. It also is
hardly influenced by air bubbles in the measurement liquid.
• Highly reliable measurement system with low maintenance
The sensor withstands a pressure of up to 500 kPa. It can be assembled into the
submersion type, angled floating 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 cleaning device for
applications, a highly reliable, low-maintenance measurement system can be built with this
sensor.
• Easy maintenance
The sensor cap ages with time and eventually comes to the end of its service life. Before
this happens, replace it with a new one. The sensor cap is easily replaced
1.2
Components
Sensor Cap
CAUTION
Do not loosen the sensor cap except in time of replacement.
O-ring for Adaptor
(EPDM)
<1. General>
Sensor Cable
The detected signal travels through the cable
to the dissolved oxygen converter.
Sensor cable is specified by the model of converter:
DO402G or FLXA402. See the section 1.4.
IM 12J05D04-01E
1-1
8th Edition : July 11, 2023

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