Kahn offers two chilled mirror optical hygrometer products, Optidew and Series 4000, to meet the requirements of a broad range of dewpoint measurement applications. Each product is available in a variety of models to suit the user's specific needs. (read more)

Kahn Instruments, Wethersfield, CT, a leading manufacturer of advanced moisture-measuring instrumentation, is proud to introduce the new HygroPort Portable Hygrometer. The HygroPort has a dewpoint measurement range of -148F to +68F, accuracy to +/-1.8F and is smaller, faster-responding, more versatile, lighter-weight and lower priced than other hygrometers of comparable performance. (read more)

Cryogenic Hygrometer - CR-1A - from Buck Research Instruments L.L.C.

The CR-1A is a high performance, cryogenically cooled hygrometer. CR-1 instruments have been routinely used aboard NASA aircraft and elsewhere for years. The CR-1A is a miniaturized version of the original CR-1, and uses a much smaller LN2 dewar. (read more)

Rugged, field proven chilled mirror technology. Over 30 years of proven reliablility. Wide measurement and operating range. (read more)

The Optidew Dewpoint and RH Hygrometer is a high performance, compact and economical chilled mirror optical instrument that provides continuous temperature, dewpoint and relative humidity measurement, display and output. Optidew offers a measurement range of -76 to +194F dewpoint (or 0.5 to 100% RH) at temperatures from -40 to +194F, and with accuracy of +/-0.36F dewpoint. (read more)

The CR-1A is a high performance, cryogenically cooled hygrometer. CR-1 instruments have been routinely used aboard NASA aircraft and elsewhere for years. The CR-1A is a miniaturized version of the original CR-1, and uses a much smaller LN2 dewar. Operating time per filling of LN2 ranges from 6 to 8 hours, depending on the dew points being measured. (read more)

Protecting against icing in low temperature/high humidity environments is vital to prolong the life and efficiency of a gas turbine. A new generation of the Optidew Hygrometers from Michell Instruments has been designed specifically for anti-icing systems in these applications. (read more)

Highest reliability. Unattended operation. Patented technology discriminates between dew & contaminants reducing maintenance. No drift or hysteresis. (read more)

Buck Research Provides Calibration for ALL Chilled Mirror Hygrometers. Buck now offers calibrations for all chilled mirror hygrometers, not just the ones we manufacture. We can do verifications of other humidity sensors, too. All of our calibrations are NIST traceable. We can calibrate temperature, pressure and of course dew point temperature and relative humidity. (read more)

Buck Research Provides Calibration for ALL Chilled Mirror Hygrometers. Buck now offers calibrations for all chilled mirror hygrometers, not just the ones we manufacture. We can do verifications of other humidity sensors, too. All of our calibrations are NIST traceable. We can calibrate temperature, pressure and of course dew point temperature and relative humidity. (read more)