The Edgetech Instruments, Inc. DPS Series consists of heated, primary method, chilled mirror hygrometer systems that continuously measure the dew point of high dew/frost point gases from high temperature environments.

When the dew/frost point temperature of a sampled gas is equal to or higher than the temperature of the sensing system, saturation occurs in the sensing system causing liquid water to condense in the apparatus. Under these conditions, reliable dew/frost point measurement us not possible.

The DPS Series heated hygrometers solve this problem by heating all the components of the sensing system to a temperature above the dew/frost point temperature of the sampled gas, preventing condensation in the measurement system. The entire sampling system within the DPS, including the chilled mirror sensor, is heated. The heated sensor and system allow reliable, accurate measurement of high dew/frost point temperatures that are above the ambient temperature.

The DPS heated chilled mirror hygrometer extracts a gas sample from a high temperature, high dew point process, transports it through a heated hose and measures its dew/ frost point over the range of -35°C (-31°F) to as high as +95°C (203°F) dew/frost point temperature. The three models are the DPS3 standard unit, the DPS4 featuring the ability to measure and automatically compensate for pressure and the DPS5 deluxe unit that offers an advanced display, operational software and interface options. For details see the DPS Series application note on the Edgetech Instruments website.

All Edgetech Instruments hygrometers are manufactured, calibrated and supported in the USA in a modern, ISO 9001:2008 registered facility containing Edgetech Instruments’ ISO/IEC 17025:2005 accredited calibration laboratory. All certifications and calibrations are traceable to NIST.