SDT-Ex Dewpoint Transmitter Specification Sheet
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SDT-Ex Intrinsically Safe Dewpoint Transmitter Shaw Moisture Meters SDT-Ex is a compact, 3 wire, 4-20 mA dewpoint transmitter designed to meet the stringent demands of industrial applications. The SDT-Ex is certified intrinsically safe to ATEX: Ex II 1 GD Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C) 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 dew point 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 meters (3,280 ft). Utilising the Ultra High Capacitance Shaw Moisture Sensor, various dewpoint ranges are available covering an overall range from -100 °C to +20 °C dewpoint. The 4 - 20 mA output is configurable in °C dewpoint, °F dewpoint, ppm(V), ppb(v), g/m³ and lb/MMSCF. The unit is fully self-contained within a robust housing, providing weatherproof protection to IP66/NEMA 4X. The SDT-Ex dewpoint transmitter is supplied ready to use, with a Certificate of Calibration traceable to National & International Humidity Standards at NPL, instruction manual and two metres (6.56 feet) of cable. 0598 3 wire, 24 V, 4 - 20 mA dewpoint transmitter Weatherproof rating IP66 – NEMA 4X Intrinsically safe to ATEX and IECEx standards Open/short circuit detection Linear 4 - 20 mA output signal Self-contained, robust and reliable Supplied with Certificate of Calibration traceable to National & International Humidity Standards at NPL ATEX II 1 GD Ex ia IIC T4 Ga (-20 °C ≤ Ta ≤ +60 °C) IECEx Ex ia IIIC T200135 °C Da (-20 °C ≤ Ta ≤ +60 °C) Overall range -100 °C to +20 °C dewpoint Output configurable in °C , °F dewpoint, ppm(V), ppb(v), g/m

Specifications DEWPOINT SENSOR Electromagnetic Compatibility (EMC) Immunity: complies with EN 61000-6-1:2001 Emissions: complies with EN 61000-6-3:2000 Warm Up Time: 10 seconds Isolation Sensing element connected to the 4 - 20 mA loop but isolated from transmitter body Output Signal: 4 - 20 mA Linear Sensing Element Shaw Ultra High Capacitance Aluminium Oxide Sensor Ranges Dewpoint = 0.1 °C/0.2 °F resolution ZD: -100 °C to +20 °C (-148 °F to +68 °F) dewpoint HD: -65 °C to +20 °C (-85 °F to +68 °F) dewpoint P (Purple):-100 to 0 °C (-148 to +32 °F) dewpoint, 0 - 6,000 ppm(V) S (Silver):-100...

Ordering Information Related Products To order a SDT-Ex Dewpoint Transmitter SU4 Sample Conditioning Unit SDT-Ex - (Range) R - Choose required range: The SU4 sample conditioning unit reduces the pressure from the dryer to give a pressure and flow suitable for trace moisture measurement. Combining pressure reduction control, a sensor holder and a flow meter for up to 10 litres per minute, (1 -2 litre is usual for continuous use), mounted on a stove enamelled back plate. P (Purple) S (Silver) G (Grey) R (Red) B (Blue) -100 to 0 °C (-148 to +32 °F) dewpoint -100 to -20 °C (-148 to -4 °F)...