|Frost Point Temperature Range:||–95 to 0.01 °C|
|Dew Point Temperature Range:||–50 to 10 °C|
|Parts Per Million Range:||0.04 to 12300 PPMv|
|Relative Humidity Range:||0.00003% to ~50%|
|Temperature Specification:||0.027 °C|
|Saturation Temperature Range: 3||–80 to 12 °C|
|Saturation Temperature Control Stability: 4||0.008 °C|
|Saturation Temperature Cooling Rate: from 12 to –80 °C||0.33 °C per Minute (average)|
|Saturation Temperature Heating Rate: from –80 to 12 °C||0.33 °C per Minute (average)|
|Test Temperature Range (measured):||0 to 50 °C|
|Saturation Pressure Range:||~Ambient to 250 psiA|
|Saturation Pressure Specification:||0.02% of full scale|
|Test Pressure Range (measured):||Ambient to 50 psiA|
|Test Pressure Specification:||0.02% of full scale|
|Gas Type:||Gaseous Nitrogen|
|Supply Pressure Range:||80 to 300 psiG|
|Supply Pressure Specification:||±1 psiG|
|Gas Flow Rate Range:||0.5 to 10 SLPM|
|Gas Flow Rate Resolution:||0.2 SLPM|
|Gas Flow Rate Specification:||2% of full scale|
|Refrigeration:||1/3 HP R-134A & 1/3 HP R-23 in cascade|
|Heating:||Stainless Steel Immersion|
|Test Port:||1/4 Inch Swagelok VCR®|
|Physical Dimensions:||37.9″ H x 23″ W x 34.9″ D (965mm x 585mm x 889mm)|
Chilled Mirror Hygrometers: Connecting the generator output to a chilled mirror hygrometer allows the user to verify the mirror temperature measurement accuracy; perform operational checks on the hygrometer components; determine whether the hygrometer is controlling the mirror in the liquid phase or ice phase when operating below 0 °C; determine if the hygrometer is correctly calculating other humidity parameters; determine hygrometer repeatability, stability, and drift characteristics.
Humidity Sensors and Electrolytic Hygrometers: Connect the generator output to a electrolytic hygrometer, sampling system, special fixtures, or sensors allows the user to calibrate and/or characterize humidity sensitivity; perform operational checks such as the sensing systems capability to correctly calculate and display other humidity parameters; determine repeatability, stability, hysteresis, and drift characteristics of various humidity sensing systems.
Environmental Testing: The 3920 can serve as a test bed for evaluation and R&D of humidity sensors, humidity sensing systems, and humidity sensitive products, e.g., polymers, composites, film, magnetic medium, pharmaceuticals, soil hydrology, consumables, electronics, optics, etc.
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