The Model 3900 Low Humidity generation is an extremely accurate means of producing known humidity values for calibrating and verifying humidity instrumentation. Based on the combined, NIST proven, fundamental "two-pressure" and "two-temperature" principles, this system will automatically supply a continuous humidified gas stream, within the frost/dew point range of -95.0°C to 10.0°C, for days or even weeks unattended. Simply apply power to the system, and the 3900 will power-up ready to purge and/or generate. Humidity setpoint values are input by the operator from the front panel keypad and are limited only by the operational range of the 3900 humidity industrial generator.

> Traceable to NIST
> Two-Pressure Two-Temperature Principle
> Push Button (Keypad) Control
> Automated Control of User Setpoints
> Automatically Applies Enhancement Factors
> Computerized Internal Transducer Calibration
> RS-232C Serial Interface
> Only Nine Square Feet of Floor Space
> Timed/Formatted Output to Professional printer
> Battery Backed-up Real Time Clock
> Backlit Liquid Industrial crystal Display