Relative Humidity Sensor RH40 series employed state-of-the-art semiconductor technology together with a thin film polymer that changes di-electric constant with atmospheric relative humidity. This results in a linear output change as a function of relative humidity. Response time is 1 to 2 minutes. When the relative humidity is at 100 %, and condensation (dew) occurs, condensation on the sensing element itself will give readings in excess of 100 %. Correct readings will return when the moisture has evaporated, and no permanent damage is done to the tip.
Mechanical protection from insects and particulate contamination is provided by a series of filters. (NB: The standard Environdata warranty does not extend to relative humidity sensor tips and their replacement, as these are consumable items.)
Electronic relative humidity sensors are not recommended for accurate measurements above 95% relative humidity or for polluted environments.
Environdata Weather Stations Pty Ltd specialises in the design, manufacture and sales of automatic weather stations and their associated software and hardware. Environdata also supplies and maintains ...