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912 Series combination AT & RH Sensors

The 912 Temperature and Relative Humidity Sensor comprises a platinum resistance temperature sensor, and capacitive RH sensor mounted in a multiplate screen. The 912 has a naturally ventilated version and an aspirated version. The flexible mounting bracket allows a number of mounting arrangements.

The 912 sensor requires a 12V DC supply from the data-logger or Data telemetry unit. The RH channel outputs a 0-1Volt signal representing the measurement range of 0-100% RH. In the M1 version, the temperature channel is a voltage output in the range 0-1V representing a temperature range of -40 to +60 Degrees C In the high precision M2 Version a 3 wire direct connection to the platinum resistance element can be made, with a usable range within -50 to +80 degrees C. From this information Dew point can be calculated in the datalogger or system it is attached to.

The 912 is constructed from non hygroscopic aluminium plates, and a robust mounting bracket. The sensor element can be unplugged for easy replacement. The forced aspiration version features a built in 12 Volt DC fan.

The calibration is performed at 10, 35 and 80%, and is stable to within 1% over a year. Yearly calibration is recommended. All versions of the 912 are fully compatible with the MTECH 2060 Automatic Weather Station telemetry Unit and the majority of commercially available data loggers.

Model Variations

912-M1 (Naturally ventilated)
912-M1-ASP (Aspirated housing)
912-M2 (High Precision, Naturally ventilated)
912-M2-ASP (High Precision, Aspirated housing)

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Humidity Sensor

912-M1-ASP in operation.

Technical Data Sheet
(105 Kb)

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