The moisture sensor HYGRASGARD® TW is installed on cooling or coldwater piping or on cooled surfaces. It can be used as moisture sensor, dew point sensor, dew detector, or limit switch on pipes. Dew point temperature is that temperature at which air reaches the condition of saturation and water starts to precipitate. Because of the continuous measuring range of 0...100 % r.H. at the TW-U variant and the adjustable limit value of 80...100 % at the TW-O-S variant, cooling ceilings for example can be operated so that generation of dew on pipes or cooling ceilings or other parts of the object to be monitored is prevented by activating the switching output of the dew point control switch, the DDC, and thus, a heating system or other actuators are activated, preventing the generation of dew. Moisture is detected by a digital long-term stable humidity / temperature sensor.

Dew point control switches HYGRASGARD® TW including strap: