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Model 3920 System Specs

Product catalog summary

Overview: The Model 3920 Low Humidity Generation System by Thunder Scientific Corporation is a sophisticated device designed to produce controlled low humidity environments. It utilizes the NIST-proven 'two-pressure' and 'two-temperature' principles to generate precise humidity levels for calibration and testing purposes.

Features:

Traceable to SI standards.
High flow capability of 10 L/min.
Embedded automation software (ControLog®).
Generates frost point, dew point, PPM, and %RH.
Real-time uncertainty calculations.
Operable via external computer.
Multi-point touch LCD interface.

Description: The system is self-contained and capable of producing atmospheres with known humidity levels. It supports continuous supply of various humidity parameters for instrument calibration and environmental testing. The system can automatically generate user-defined humidity setpoints and profiles, with real-time status displayed on a monitor.

Principle of Operation: The system saturates nitrogen or CO2-free air with water vapor at a known temperature and pressure. The saturated gas is then adjusted to test conditions. The system's precision relies on accurate temperature and pressure measurements, without measuring water vapor content directly.

Control/Computer System: The system includes a high-performance control system with 24-bit I/O modules and digital stepper motor actuated valves. It uses ControLog® software for automation and data management, allowing connection to external PCs for enhanced operation.

Applications:

Chilled Mirror Hygrometers: Verification and operational checks.
Humidity Sensors: Calibration and characterization.
Environmental Testing: Evaluation of humidity-sensitive products.

Specifications:

Electrical Power: 220 ±20 V~, 10 A, 1 Ø, 50/60 Hz.
Gas Supply: 80 psiG to 300 psiG @ 10 L/min.
Operating Temperature: 15 to 30 °C.
Frost Point Range: -95 to 0.01 °C.
Dew Point Range: -50 to 10 °C.
Relative Humidity Range: 0.00003% to ~50%.

Uncertainty: The system provides detailed uncertainty specifications for dew point, frost point, and test temperature, ensuring high accuracy and reliability in measurements.

Catalog excerpts

Thunder Scientific “Two-Pressure Two-Temperature” Low Humidity Generato

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Low Humidity Generation System FEATURES • Traceable to SI 1 • Based on NIST “Two-Pressure” Principle • High Flow Capability of 10 L/min • ControLog® Embedded Automation Software • Generate: Frost Point, Dew Point, PPM, %RH • HumiCalc® Mathematical Engine • Calculated Real-Time Uncertainty • Calculated Water Capacity / Usage • Ability to Operate Using External Computer • VCR® Metal Gasket Face Seal Fittings • Diaphragm-sealed Control Valves • Multi-Point Touch LCD P P Generation System is a selfcontained system capable of producing atmospheres of known humidity utilizing the fundamental NIST-proven...

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Data can be transferred off the system via a USB drive for further viewing, post processing and printing using an external Windows PC. The ControLog software also provides the primary interface to the operator via the multipoint touch display. The main panel has easy access to the keyboard allowing the user to input data directly without connecting an external PC. During desktop operation the embedded version locks out user setpoint changes but still allows data viewing and graphing. Temperature Control: Temperature setpoint control is attained by controlling the temperature of a circulating...

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Low Humidity Generation System SPECIFICATIONS For More Information or to Place an Order Contact: Thunder Scientific 623 Wyoming Blvd. SE Ordering: 800.872.7728 0220-3920

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Model 3920 System Specs

Model 3920 System Specs

Catalog excerpts

All Thunder Scientific Croporation catalogs and technical brochures