Shaw SDT 2-wire
Dew Point Transmitter

Shaw Superdew Inline
Dewpoint Meter

Shaw SADP Portable
Dew Point Meter

Dew Point transmitters and meters, also known as a hygrometer, are utilized for measuring moisture content in air and gas applications. These dry air hygrometers utilize the Shaw modified molecular sieve absorber with an outer conductor of 24 carat gold, enabling accurate measurement of dew point temperature from -100 degrees C to 0 (+20) degrees C. Available in the SADP portable unit for spot checks, in the Super Dew in-line model and the SDT 2-wire 4-20 mA Dew Point Transmitter  for continuous monitoring. The instruments are economically priced and versatile. The measurement can be calibrated in parts per million by volume or dew point temperature and is available in analog or digital versions. The SADP portable unit is FM and Cenelec approved for intrinsically safe applications.

The Shaw calculator equates many different American and metric measurement units and also enables calculations to be made for moisture levels at different operating pressures. The conversion table shows dewpoint temperature in degrees Fahrenheit and Centigrade, equivalent moisture levels in mg/water per liter, lbs/water per million cubic feet, parts per million water vapor by volume and water vapor pressure in mm of mercury. The other side (illustrated left) shows dewpoint temperature at any given pressure, converted to the equivalent dewpoint temperature at other pressures. Moisture content in parts per million is also defined.

E+E Elektronik

The E+E dewpoint transmitters are actual humidity / temperature transmitters calibrated over a small portion of the humidity range and equipped with special sensors and software. For that reason there are limits to the lowest dewpoint temperature. These transmitters are an excellent choice to measure dewpoint temperature in dryers, compressed air systems and the like.

Typical applications: Power generation, natural gas drying, welding, aircraft and medical oxygen, breweries, food packing, air dryers, plastic molding.