This document details the Vaisala HUMICAP sensor technology, its benefits, operating principles, and typical applications for measuring relative humidity.
Vaisala HUMICAP is a capacitive thin-film polymer sensor introduced in 1973 as the world's first of its kind. It offers a full measurement range of 0...100 %RH with accuracy of ±1 %RH and is known for excellent long-term stability and negligible hysteresis. The sensor is designed to be insensitive to dust and most chemicals, with options for chemical purging and heating for condensing environments.
| Measurement Range | 0...100 %RH |
|---|---|
| Accuracy | ±1 %RH |
| Technology Type | Capacitive thin-film polymer sensor |
| Market Introduction Year | 1973 |
The HUMICAP sensor is a capacitive thin-film polymer sensor consisting of a substrate with a thin film of polymer deposited between two conductive electrodes.
The sensor measures the change in capacitance caused by the dielectric properties of the polymer film changing as it absorbs or releases water vapor.
Yes, the sensor includes a heating option that allows for measurements even in condensing environments and ensures full recovery from condensation.