Trek 156A, Руководство оператора

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FLOAT Mode Operation
In the FLOAT mode, the 156A monitors the voltage on the plate caused by air ion
imbalance.
1. Place the ion collecting plate in the area to be monitored.
2. Place the MODE switch in the FLOAT mode.
3. Press down and release the TEST/RESET switch to apply 0 volts to the plate.
Upon releasing the TEST/RESET switch, the plate will “float” to a voltage as
dictated by air ion imbalances.
DECAY Mode Operation
In the positive (+) DECAY and negative (-) DECAY modes, the 156A monitors the
time taken for the ion collecting plate to decay from the programmed START voltage
to the programmed STOP voltage.
1. Place the ion collecting plate in the area to be monitored.
2.
Place the MODE switch in either the positive (+) DECAY or negative (-)
DECAY mode:
In the positive (+) DECAY mode the ion collecting plate is charged to a positive
voltage. In the negative (-) DECAY mode the ion collecting plate is charged to a
negative voltage.
3. Press and release the TEST/RESET switch.
The ion collecting plate will charge to a value slightly greater than the
programmed START voltage. The decay timer will start when the plate voltage
reaches the programmed START voltage. The decay timer will stop when the
plate voltage reaches the programmed STOP voltage.
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Operation