Air & Liquid Systems - SHAW Moisture Meters Shaw Moisture Meters Shaw Moisture Meters

Model SDT-Ex Dewpoint Transmitter
Order by Phone: (504) 523-1789 Skype: (303) 800-5861 Fax: (877) 835-1161 or by email:


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The Shaw Moisture Meters Model SDT-Ex is a compact,
3 wire, 4-20 mA dewpoint transmitter designed to meet the stringent demands of industrial
applications. The unit is fully self-contained within a robust housing providing weatherproof
protection to IP66 / NEMA4X.

The Model SDT-Ex is certified Intrinsically Safe to ATEX II I GD Ex ia IIC T4 Ex ia D20 T135°C
(-20°C ≤Ta+60°C)
for use in hazardous areas using a signal isolator.

Utilising the Ultra High Capacitance Shaw Moisture Sensor, various dewpoint ranges are
available covering an overall range from -120 ºC to +20 ºC Dewpoint. The 4-20 mA output is
configurable in °C Dewpoint, °F Dewpoint, ppm(v), g/m3 and lbs/MMSCF.
Incorporating advanced electronics, the Model SDT derives its power from 7-28 Vdc non-isolated
power source and is configured to output a linear, isolated, 4- 20 mA signal for distances up to
1000 meters (3280 ft).

The Model SDT is supplied ready to use, with a calibration certificate traceable to National &
International humidity standards, Instruction Manual and 2 meters (6.56 ft) of cable.




Copyright Air & Liquid Systems, Inc.

Air & Liquid Systems, Inc. Factory Authorized USA Distributor 1426 Magazine Street, New Orleans, LA 70130
Phone: (504) 523-1789 Skype: (303) 800-5861 Fax: (877) 835-1161 email: