Thin-film Humidity Sensing Element SH * Low cost * Wide T/RH operating zone * Operating temperature up to 200 deg C * Excellent sensibility * Very good dynamic properties * Short response time * Long-term stability * Measurement range: 0 - 100 %RH The SH relative humidity sensing element consists of a system of electrodes on a glass-ceramic substrate, covered by a humidity-sensitive polymer coating and a water-vapor permeable metallic membrane. This coating system represents a humidity-dependent capacitor. Utilizing the principal of capacitive measurement, SH measures relative humidity in air or other non-aggressive gases and gas mixtures with good long-term stability and linearity, small hysteresis, and excellent dynamic response.