Model 3900

“Two-Temperature Two-Pressure”
Low Humidity Generation System

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.

Model 3900 Low Humidity Generation System

FEATURES

  • Traceable to SI 1
  • 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

1 Traceable to the International System of Units (SI) through NIST-maintained standards.

Product Options

These are the options available for the Model 3900 low humidity generation system.

2500

2500ST TriPort Exterior Port View

2500

2500ST TriPort inside chamber view

2500

2500 Inside chamber view

2500

2500 Auxiliary Chamber Feed Thru

2500

Model 2500 Chamber Port Size Dia. 1.9″

2500

Model 2500 Port Foam Insert

Model 2900 Port Foam Insert

This content will show up directly in its container.

Accessory items for this model

2500

2500ST TriPort Exterior Port View

2500

2500ST TriPort inside chamber view

2500

2500 Inside chamber view

2500

2500 Auxiliary Chamber Feed Thru

2500

Model 2500 Chamber Port Size Dia. 1.9″

2500

Model 2500 Port Foam Insert

Model 2900 Port Foam Insert

  • Placeholder
  • Placeholder
2500

2500ST TriPort Exterior Port View

2500

2500ST TriPort inside chamber view

2500

2500 Inside chamber view

2500

2500 Auxiliary Chamber Feed Thru

2500

Model 2500 Chamber Port Size Dia. 1.9″

2500

Model 2500 Port Foam Insert

Model 2900 Port Foam Insert

NVLAP accreditation criteria are established in accordance with the U.S. Code of Federal Regulations

, NVLAP Procedures and General Requirements, and encompass the requirements of ISO/IEC 17025:2017. Accreditation is granted following successful completion of a process which includes submission of an application and payment of fees by the laboratory, an on-site assessment, resolution of any nonconformities identified during the on-site assessment, participation in proficiency testing, and technical evaluation. The accreditation is formalized through issuance of a Certificate of Accreditation and Scope of Accreditation and publicized by announcement in various government and private media.

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