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CI-900 Instruction Manual 8/10/2015
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66
Use Conditioning Chamber In to Replenish the Sensor (RECOMMENDED):
Conditioning Chamber In in special mode with distilled water, can be used to help keep the
electrochemical cell hydrated and avoid having to refill the sensor manually with a syringe.
1.
Fill Chamber In to the fill-line located on the back of unit using fresh,
clean distilled water.
2.
Fill Chamber Out with potassium permanganate.
3.
Turn on Chamber In and Chamber Out.
4.
Enable Closed loop.
5.
Allow the unit to run the closed loop with water in Chamber In for
several hours or until the unit has returned to the overall sensor full
weight
6.
Details about the electrochemical cell status can be found in the
Setup>Sensor>Cell Hydration menu.
Note:
The refill dead time is proportional to the R.H. of the measured gas and the duration of
measurement. For example: dry gas at <10% R.H. will have ~1:1 measurement to dead time. Room
air at 25-30% R.H. will have ~1:2 ratio. Any unit that measures ~40% R.H. should, in theory, never
dry out.
Note:
Weighing the entire CI-900 unit on an analytical balance when the sensor is full will allow
you to monitor the water level of the sensor, by keeping track of the weight loss of the whole CI-900
unit. Remember to always weigh the CI-900 with the same setup and to follow the instructions
above to remove and refill the sensor, when it has lost 20-25 grams of water. The weight of the
instrument completely assembled with a full sensor is found in the Production Test Check Sheet.
Содержание CI-900
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