Software Download

Please leave your name and mail address. We will send you a link for the software download.

Name(Required)
Email(Required)
Privacy(Required)
This field is for validation purposes and should be left unchanged.

Easy Inquiries with Wi.Tec

Gas measurements are a complex matter. For your inquiry, please use our super simple application questionnaire or send us an informal email to get in touch with us quickly.

Informal inquiry

Humidity Sensor

Humidity Sensor

hxxo20190220180649 1600
The HUMI.sens® is based on a capacitive humidity sensor. This sensor consists of a hygroscopic polymer material into which the water vapour from the sample gas is deposited. This embedding changes the dielectric property of the polymer material. This polymer material is located between the electrodes of an electrical capacitor and therefore also changes the capacitance of the capacitor. The capacitance increases almost linearly with the humidity. An equilibrium is created between the humidity in the sample gas and the humidity in the polymer, which adapts reversibly with varying humidity.

Principle structure

The humidity sensor is built up in a layered structure. The bottom layer forms the carrier. This consists of ceramic. A base electrode is then applied to this carrier. The hygroscopic polymer layer is applied over this base electrode. A gas-permeable layer must be applied as a counter electrode so that the water vapour can reach this sensitive layer from the outside.
Feuchtesensor Prinzip
Feuchtesensor Grafik