Relative Humidity Sensor

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.

• All solid state construction, digital electronics
• Fast response of less than 5 seconds to 90% of final value
• Low power consumption of 4 mA at 12 VDC
• Easily cleaned using distilled water
• 0-1V output for 0-100% RH
• Will operate from a 12 VDC battery

• The sensor is mounted on a small probe, which measures, records and displays humidity levels
• Because the sensor measures only ambient humidity, in most settings temperature compensation is unnecessary
• The probe body is water tight and made from corrosion resistant aluminum
• Immersion of the sensor element in water does not adversely affect the calibration

The 083E Relative Humidity Sensor measures variance in the capacitance change of a onemicron 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.