Alpha Moisture Systems Ltd

Dew-point transmitter
-110 ... 20 °C, ATEX Alpha Moisture Systems Ltd

Model AMT-Ex Dewpoint Transmitter

A three wire 4-20mA transmitter, used for continuous measurement of humidity in a process gas or compressed air, which will output a linear 4-20mA signal corresponding to the dewpoint temperature. The Model AMT-Ex transmitter can also be factory configured to output a 4-20mA linear signal for any other moisture unit e.g. ppm(v), ppm(w), g/m3, lb/MMSCF etc.

The long lasting sensing element offers excellent sensitivity, repeatability and response speed. Each unit is supplied with a Certificate of Calibration, traceable to International Humidity Standards, validating accuracy to ±2ºC dewpoint.

Model AMT-Ex is ATEX certified and provides an Intrinsically Safe Dewpoint Transmitter for hazardous area use when installed with the appropriate isolator.

The transmitter also incorporates an Automatic Calibration (AUTOCAL) feature, which allows the user to carry out a field calibration / span check. AUTOCAL feature is operated by means of two small button switches built within the transmitter enclosure.

Model AMT-Ex transmitter can withstand 35,000 kPa (350bar) maximum pressure and by employing a low resistance cable, the transmitter can be located significant distances, in excess of 1000 metres, from the safe area.

The Model AMT-Ex transmitter is supplied with a Certificate of Calibration.

3 Wire Intrinsically Safe Dewpoint Transmitter
Ex II 1GD Ex ia IIC T4 Ex iaD 20 T135¡ãC (-20¡ãC ¡Ü Ta ¡Ü +60¡ãC)
Overall Range: -120¡ãC to +20¡ãC Dewpoint
Accuracy ¡À 2¡ãC Dewpoint
AUTOMATIC CALIBRATION
Can be configured for Linear 4-20mA signal in: ¡ãC & ¡ãF Dewpoint, ppm(v), g/m3, lb/MMSCF
Temperature Compensation
Fast Response
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