12
5.2.3 Submersible Systems
Submersibles are sealed systems and apart from sensor
capsule replacement, no other maintenance is possible.
5.3 Changing the Temperature Compensator
5.3.1 Floating Ball and Dip Systems
This item is an integral part of the sensor body and is, therefore,
not maintainable. Change the complete sensor body as
described in Section 5.2.
5.3.2 Submersible System
The submersible system includes a sealed unit housing the
combined temperature compensator/oxygen sensor body
and is not accessible for maintenance purposes except for
the replacement of the sensor capsule – see Section 5.1.3
Dip Systems.
Sensor Type: .................................. 8012-170 sensor capsule.
Response:
Typically 20 seconds for 90% of a step change of oxygen
concentration at 20°C.
Temperature Compensation:
Automatic correction by means of integral Pt 100 resistance
thermometer.
Accuracy:
±0.2 mg l
-1
or ±2% saturation within ±10°C of the calibration
temperature in the range 0 to 35°C.
Operating Temperature Range: 0 to 40°C
Operating Pressure: ..................... Atmospheric
Dimensions:
Floating Ball
Ball diameter: ............................ 203 mm
Boom, outside diameter: .......... Metric - 50 mm
Imperial - 1
7
/
8
in (48 mm
approximately)
Boom length
Assembled ................................ 3 metres
Kit .............................................. 3 metres, user supplied
Dip
Dip Tubes:
Assembled (metric) ................... 1,2 or 3 metre options
40 mm outside diameter
Kit (Imperial) .............................. user supplied
1.9 in outside diameter
Submersible
Diameter ......................................... 40 mm
Length
Approximately 265 mm
(335 mm with water wash)
Cable length ................................... 10 m
Materials of Construction:
Boom: ............................................. ABS
Sensor body: .................................. ABS
Flotation ball: .................................. Polypropylene
Tube on dip system ........................ Polypropylene
Body of submersible system .......... Polypropylene
Bracket metalwork ......................... Stainless steel
Extra Connection Cable:
Part No.: ......................................... 0233-828
Maximum distance: ........................ 100 metres (328 feet)
…5 MAINTENANCE
6 SPECIFICATION
