Application Instructions
31
Hydromette BL Compact RH-T
4.3 Handling the Hydromette
The Hydromette BL Compact RH-T is mainly used for measuring
the relative air humidity in bulk goods and solid materials (e.g.
masonry, concrete, etc.).
To do so, hold the Hydromette at the measuring location in the air,
or insert into the building material, and commence the
measurement. For particularly precise measurements, particularly
for temperatures under interior temperatures (20 -25 °C), or for
significant differences between the temperature of the sensor or
measuring device and the surrounding atmosphere, the device
should be exposed to the surrounding atmosphere of the
measurement location for approx. 10-15 minutes or until the
temperature has equalised. The sensor adapts to the surrounding
temperature even when not switched on.
Condensation occurs on all parts in a room that are cooler than the
dew point.
No adjustment of the sensor is necessary.
Response time of the air humidity sensor
The response time is delayed by the filter material in the metal
tube.
The response time of the air humidity sensor in slightly moving air
is approx. 5 minutes for 90 % of the humidity difference with a
surrounding temperature of 20 to 25 °C, and approx. 15 minutes for
95 % of the humidity difference
By moving the device (ventilating the sensor), the response time
can be reduced in stationary air or with very little air movement.
