YOKOGAWA DO70G, Руководство пользователя

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<2. Installing the Sensor and Connecting the Cable>>
2-3
IM 12J05D04-01E
2.2.2 Selecting the Sensor Holder
Each holder or fitting where the DO70G Optical Dissolved Oxygen Sensor is assembled has the
following characteristics.
Choose a holder that suits the liquid to be measured and the measurement location.
An appropriate adaptor is required for connection to the holder. Select it with the Holder Option
Code or arrange it separately according to the adaptor listed in Spare Parts.
[PB350G Angled Floating Ball Holder and PB360G Vertical Floating Ball Holder]
The fitting is designed to contain the sensor in a sphere that floats on a liquid. This fitting 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:
See Subsection 3.2.3). The float is supported by an arm and does not move away from the
measurement point even if the SUM is flowing.
When using this holder the membrane damage detector function in the converter can be activated.
(Sensor cable)
Holder assembly
Float ball
Pipe assembly
Guide roller
Pulley
Arm bracket
Auxiliary bracket
Rope
Balance weight
(Stanchion)
Guide pipe
Figure 2.2 Suspension of Dissolved Oxygen Sensor Using PB350G Angled Floating Ball Holder
Arm assembly
Sensor cable
Float
Mounting bracket
Fix the bracket to a nominal 50 A
pipe (OD of 60.5 mm) or a
horizontal surface (floor, the
edge of a solution tank, etc.).
8th Edition : July 11, 2023