Yokogawa DO30G Dissolved Oxygen Sensor - Manual (Page 16)

<3. Installing the Sensor and Connecting the Cable>
3-3
IM 12J5B3-01E
[PB350G Angled Floating Ball Holder]
The fitting is designed to contain the sensor in a sphere that floats on a liquid. This fitting is im-
mune 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 descrip-
tion: 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 acti-
vated.
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.).
F06.ai
Figure 3.3 Suspension of Dissolved Oxygen Sensor Using PB350G Angled Floating Ball Holder
[DOX8HS (Style B) Immersion Type Holder]
The holder holds the sensor at an angle of 45°. Consequently, bubbles will not stick to the perme-
able membranne. Any pollutants in the SUM can be automatically cleaned off at regular intervals
using a jet-spray water (air) cleaner.
Cleaning-utility pipe
Sensor cable
Dissolved oxygen sensor
Jet cleaner
F07.ai
Figure 3.4 Suspension of Dissolved Oxygen Sensor Using DOX8HS Immersion Type Holder
(with Jet Cleaner)
4th Edition : Apr 05,2011
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