The HMP233 is a temperature and relative humidity transmitter designed for use in industrial and special applications where humidity control is important. The transmitter can transfer information to any device with a RS 485/422 or digital current loop interface. It has a maximum transfer rate of 9600/4800 baud. The transmitter can be fitted with two different cables. One is for measurement of temperatures up to 80 °C (176 °F) and the other is for higher temperatures – up to 120 °C (248 °F).
The sensors have a temperature accuracy of ±0.1 °C (±0.36 °F) at 20 °C (68 °F). The relative humidity measurement range is 0 to 100 % RH and the relative humidity accuracy is ± 2% from 0 to 90% RH and ± 3% from 90 to 100% RH. The transmitter calculates dewpoint temperature, mixing ratio, absolute humidity, wet bulb temperature, and enthalpy.
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