The Duet from RH Systems is a state-of-the-art chilled mirror hygrometer developed and manufactured in the United States.
Independently designed by Bob Hardy, RH Systems founder, the Duet blends traditional chilled mirror technology with modern enhancements to create a highly precise, portable standard for dual Dew and Frost Point measurement along with PPM and relative humidity.
Optimizing the chilled mirror principle, the Duet’s precision engineering and advanced measurement algorithms deliver accurate, direct humidity measurements, including dew point, frost point, %RH, ppm, ambient temperature, and pressure.
Ratiometric resistance measurement with dual embedded thermometer. Weighs 20-25 lbs with custom Pelican case for on-site measurement.
FrostLock establishes a known condensate state --either frost or super-cooled dew --at mirror temperatures below 0°C, eliminating mixed or ambiguous conditions. This harmonious precision in dew-frost discrimination resolves long-standing industry misconceptions, ensuring accurate calculation of dependent humidity values
