Both the Model SDT and SDT-Ex dewpoint transmitters utilise the industry standard, ultra high capacitance SHAW moisture sensing technology. Various dewpoint ranges are available covering an overall range from -100 °C to +20 °C dewpoint (-148 °F to +68 °F). The dewpoint transmitters’ 4 – 20 mA output is configurable in °C dewpoint, °F dewpoint, ppm(v), g/m³ and lb/MMSCF.
Incorporating advanced electronics, power can be derived from 7 – 28 V DC non isolated power source and configured to output a linear, isolated, 4 – 20 mA signal for distances up to 1,000 metres. The mechanics of the Model SDT and SDT-Ex dewpoint transmitter have been designed to cope with extreme environmental conditions.
Designed with the operator in mind, for reliable and accurate measurements, the SHAW dewpoint transmitters are extremely easy to install and operate, requiring little or no maintenance.