GANN 30001430, Operating Instructions Manual

Page: 41 / 89

40
Use of the active electrode RF-T 36
The electrode RF-T 36 was developed among other things for semi-stationary (electrode remains
at the measuring point - display unit is mobile when in use) air humidity and air temperature
measurement in interiors, storage bays, etc.
Attach the electrode at the measuring location or at the required point and start the measuring
process. For particularly precise measurements, in particular at temperatures below room
temperature (abt. 20 °C) or if there are significan t temperature differences between the
temperature of the electrode itself and that of the surrounding atmosphere (measurement
immediately after assembly) the electrode should be exposed to the surrounding atmosphere for
approximately 10 to 15 minutes or until temperature equalization. The sensor adapts itself to the
surrounding atmosphere even while being switched-off.
Response time of the air humidity sensor RF-T 36
The response time is delayed by the filter cap. In exceptional cases it can be unscrewed.
However, if this is done the danger of damage to the sensor is increased considerably.
The response time of the air humidity sensor in moving air, with an ambient temperature
of 20 to 25 °C is:
- approx. 20 sec. for 90 % of the humidity difference without filter or
- approx. 3 min. with filter, and
- approx. 30 sec. for 95 % of the humidity difference without filter, or approx. 10 min. with filter.