Relative humidity transmitter / with temperature measurement / HVAC
35 - 100 %rH, -10 °C ... +60 °C | (T)FG120 Galltec Mess- und Regeltechnik

Characteristics

  • Type:

    relative, with temperature measurement

  • Domain:

    HVAC

Description

The (T)FG120 is an HVAC relative humidity and temperature transmitter. It has the Polyga® humidity measuring element which is composed of several synthetic fabric bands. Each of these bands have 90 fibres, each with a 3 μm diameter and a molecular structure that is arranged lengthways. In the untreated state, the fibers do not attract and hold water molecules.

The hygroscopic properties are obtained through a process which makes the synthetic fibers take in moisture. When water is taken up, the molecule chains of the threads alter and this leads to a change in length. A loss of water results in an opposite effect. The length of the fiber in equilibrium with the air humidity is the gauge for the relative humidity.

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