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. This system is capable of continuously supplying accurately known humidity values for instrument calibration, evaluation, and verification, as well as for environmental testing. Simply apply power and the 2500 will power-up ready to generate. 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. 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. Humidity produced is solely dependent on the measurement of pressures and temperatures and does not rely on any other device for the measurement of water vapor content.

> Accuracy ± 0.5 %RH
> Traceable to NIST
> Self Contained and Mobile
> Automated Control of User Setpoints
> ControLog(TM) Automation Software
> HumiCalc(r) Humidity Conversion Software
> Computerized Internal Transducer Calibration
> Low Noise Air Compressor with Air Dryer
> RS-232C Serial Interface