![]() ![]() Pre-Saturator/Expansion Valve Temperature Uncertainty: 1ġ5" H x 15" W x 12" D (38.1 cm x 38.1 cm x 30.5 cm)Ģ2" H x 36" W x 23" D (55.8 cm x 91.4 cm x 58.4 cm)ģ3.25" H x 43" W x 26" D (84.5 cm x 109.2 cm x 66.0 cm)ĥ6" H x 43" W x 26" D (142 cm x 109 cm x 66 cm)ġ Represents an expanded uncertainty using a coverage factor, k=2, at an approximate level of confidence of 95%. Relative Humidity Uncertainty: P c T c 1Ĭhamber Fluid Temperature Range: (Optional)Ĭhamber/Saturation Temperature Uncertainty: 1 Precision humidity generation is determined by the accuracy of the pressure measurements and on the accuracy and uniformity of temperature throughout the generating system. Humidity produced is solely dependent on the measurement of pressures and temperatures and does not rely on any other device (such as a dew point hygrometer, psychrometer, or humidity sensor) for the measurement of water vapor content. To generate a known humidity, the computer controls the pressure ratio Pc /Ps utilizing the enhancement factor ratio fs/fc and the effective degree of saturation es/ec. Relative humidities are calculated from the measurements of pressure and temperature with the formula: Humidity setpoint values are input by the operator from the front panel keypad and are limited only by the range of the 2500 humidity generator. Simply apply power and the 2500 will power-up ready to generate. This system is capable of continuously supplying accurately known humidity values for instrument calibration, evaluation, and verification, as well as for environmental testing. *Overnight delivery restrictions apply and are NOT available on special order items.The Model 2500 Benchtop Humidity Generator is a self contained system capable of producing atmospheres of known humidities using the fundamental, NIST proven, "two-pressure" principle. Orders placed after 12:00pm CST will ship the NEXT business day. Orders placed before 12:00pm CST will ship the same business day.
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