9/24/20 Leaderboard Pharma

Model 3900 Low Humidity Generator

Available from Thunder Scientific Corp.

The Model 3900 Low Humidity Generator 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 generator.


•Traceable to SI ***
•Based on NIST Proven Two-Pressure Principle
•Push Button (Keypad) Control
•Automated Control of User Setpoints
•3900 ControLog® Automation Software
•HumiCalc® with Uncertainty Software
•Automatically Applies Enhancement Factors
•Computerized Internal Transducer Calibration
•RS-232C Serial Interface
•Only Nine Square Feet of Floor Space
•Timed/Formatted Output to Printer
•Battery Backed-up Real Time Clock
•Backlit Liquid Crystal Display

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