Dew Point Measurement Instrument for High Precision Measurements

The MBW 373 is a high precision chilled mirror device used to measure the dew point, or frost point, of a gas. Automatic control of the temperature of a polished mirror using thermo-electric coolers (or a peltiers device), cools the mirror to a temperature at which condensation occurs. Careful control of the mirror temperature maintains a constant thickness of condensation. The mirror is illuminated, and a light-sensitive detector determines the thickness of condensation on the mirror surface. Fast response at low level measurements is achieved with ORIS, a unique facility to improve response time without affecting accuracy or stability.

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