Model SDT-Ex Intrinsically Safe Dew Point Transmitter

Dew point transmitter for compressed air and process gases

Product details

Shaw Moisture Meters intrinsically safe dewpoint transmitter, the Model SDT-Ex, is designed to meet the stringent demands of industrial applications, suitable for the measurement of trace moisture in compressed air and process gases.

Compact, 3 wire, 4-20 mA , the Model SDT-Ex is certified intrinsically safe to ATEX: Ex II 1 GD Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C) and IECEx: Ex ia IIIC T200135 °C Da (-20 °C ≤ Ta ≤ +60 °C) for use in hazardous areas using a signal isolator.

Incorporating advanced electronics, this intrinsically safe dewpoint transmitter derives its power from a 7 – 28 V DC non-isolated power source and is configured to output a linear, isolated, 4-20 mA signal for distances up to 1,000 metres (3,280 ft).

Utilising the ultra high capacitance SHAW sensor technology, various dewpoint ranges are available covering an overall range from -100 °C to +20 °C (-148 °F to +68 °F) dewpoint. The 4-20 mA output is configurable in °C dewpoint, °F dewpoint, ppm(v), g/m³ and lb/MMSCF.

Fully self contained within a robust housing and providing weatherproof protection to IP66/NEMA 4X. The Model SDT-Ex intrinsically safe dewpoint transmitter is supplied ready to use, with a Certificate of Calibration traceable to National & International Humidity Standards, instruction manual and two metres (6.56 ft) of cable.

Key features of Model SDT-Ex

  • Shaw brand accurate held hygrometer
    3 wire, 24 V, 4 – 20 mA dewpoint transmitter
  • Shaw brand accurate held hygrometer
    Intrinsically safe to ATEX and IECEx standards
  • Shaw brand accurate held hygrometer
    Overall range: -100 °C to +20 °C (-148 °F to +68 °F) dewpoint
  • Shaw brand accurate held hygrometer
    Output configurable in °C dewpoint, °F dewpoint, ppm(v), g/m³ and lb/MMSCF
  • Shaw brand accurate held hygrometer
    Accuracy ±2 °C (±3.6 °F) dewpoint
  • Shaw brand accurate held hygrometer
    Weatherproof rating IP66 – NEMA 4X
  • Shaw brand accurate held hygrometer
    Open/short circuit detection
  • Shaw brand accurate held hygrometer
    Linear 4 – 20 mA output signal
  • Shaw brand accurate held hygrometer
    Self-contained, robust and reliable
  • Shaw brand accurate held hygrometer
    Supplied with Calibration Certificate traceable to National & International Humidity Standards
SHAW SDT-Ex intrinsically safe 4-20 mA dewpoint transmitter, fully self contained within a robust housing, for industrial applications

Intrinsically safe

Certified intrinsically safe to ATEX and IECEx standards for use in hazardous areas when using a signal isolator… (read more)

SHAW SDT-Ex dewpoint transmitter with autocal functionality, suitable for use in hazardous areas and industrial applications

Automatic calibration

The most important and unique feature of the SHAW system is the automatic calibration facility… (read more)

Related products and accessories for Model SDT-Ex

Product support for Model SDT-Ex

Model SDT-Ex Specification Sheet

SHAW SDT-Ex Dewpoint Transmitter Instruction Manual

Model SDT-Ex Instruction Manual

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