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Greg Scace is a mechanical engineer who has been working at NIST since 1984. He has extensive experience in the design and construction of primary humidity standards, and is the designer of the NIST Low Frost-Point Generator (LFPG), the NIST Hybrid Humidity Generator (HHG), and the NIST Gravimetric Hygrometer. The combination of humidity generators and primary standard hygrometer enable NIST to produce humidified nitrogen or air with frost / dew-point temperatures from -100 °C to +85 °C, with extremely low, experimentally-verified uncertainty. He is an expert in the generation and measurement of humid gas mixtures with water vapor concentrations below 1X 10-6 and has authored or co-authored more than ten papers on the subject. He is an instructor for the yearly Humidity Tutorial given at the NCSLI conference.
Sensor Science Division
Thermodynamic Metrology Group