Relative Humidity Sensor
Available from Met One Instruments Inc
The 083E Relative Humidity Sensor is a highly sensitive and stable temperature measurement tool that provides outstanding accuracy. It is reliable in the full range of relative humidity conditions, from 0-100%, performing equally well in meteorological, industrial, laboratory and other demanding settings.
This model is also available with a mounted temperature sensor, and can be used with a variety of radiation shields.
The 083E Relative Humidity Sensor measures variance in the capacitance change of a one-micron thick dielectric polymer layer.
This film absorbs water molecules through a metal electrode, and causes capacitance change proportional
to relative humidity. The thin polymer layer reacts very quickly, providing up to 90% of the final value of relative humidity in fewer than five seconds.
The sensor’s response is essentially linear, with small
hysteresis, and negligible temperature dependence.