*mydirectindustry

Model 9500 System Specs

Product catalog summary

Features:

Traceable to SI standards with 0.3% RH uncertainty.
High flow capability and based on NIST's 'Two-Pressure' principle.
Generates RH, DP, FP, PPM, and multipoint profiles.
Real-time computation of system uncertainties and automatic application of enhancement factors.
Controlled by ControLog® Automation Software.

Description:

The Model 9500 Humidity Generation System uses the NIST-proven 'two-pressure' principle to produce known humidity values. It can supply relative humidity, dew point, frost point, and parts per million for calibration and testing. The system allows programming of humidity, temperature, pressure, flow rates, and time intervals, with real-time status displayed on a monitor.

Principle of Operation:

The system saturates air or nitrogen with water vapor at a known temperature and pressure. The process involves reducing pressure isothermally to test conditions. Humidity generation relies on temperature and pressure measurements, with system uncertainty determined by these factors.

ControLog Software:

ControLog automates the system's operation, allowing device connections through various interfaces. It retrieves and stores data for real-time or post-process viewing, with data transferable via USB for further analysis.

Control System:

The system includes a high-performance control system with 24-bit I/O modules and serial interfaces for data acquisition and humidity generation control. It uses an embedded operating system and specialty software for HMI interaction.

Temperature Controlled Bath:

The system features a stable temperature bath controlled digitally between 0 °C and 72 °C using PID algorithms. Components are immersed in circulating distilled water for stability and uniformity.

Pressure and Flow Control:

Pressure and flow are controlled via electromechanical valves, with continuous measurement and PID algorithm control.

Calibration:

The system includes software for calibrating temperature and pressure transducers, with coefficients stored in memory.

Applications:

Testing and calibration of chilled mirror hygrometers and humidity sensors.
Environmental testing for various materials and products.

Specifications:

RH Range: 5.2 to 99 %RH at 1 atm and 23 °C.
Frost Point Range: -31.6 to 0 °C.
Dew Point Range: -34.8 to 70 °C.
Bath Temperature Range: 0 to 72 °C with stability of 0.005 °C.
Gas Type: Air or Nitrogen with a pressure rating of 350 psiG.
Flow Rate: 10 to 150 L/min.

Utilities:

Electrical Power: 220/240 V~, 20 A, 3 Ø, 50/60 Hz.
Gas Supply: 350 psiG @ 150 L/min.
Cooling Water: 2 gpm maximum at 21 °C.

Environmental Conditions:

Operating Temperature: 15 to 30 °C.
Storage Temperature: 0 to 50 °C.
Humidity: 5 to 95% RH non-condensing.

Catalog excerpts

Thunder Scientific Model 9500 Automated “Two-Pressure” Humidity Generation Syste

Open the catalog to page 1

Automated Humidity Generation System FEATURES • Traceable to SI 1 • 0.3% of Reading RH Uncertainty 5 • High Flow Capability • Based on NIST Proven “Two-Pressure” Principle • Generate: RH, DP, FP, PPM, Multipoint Profiles • Computes System Uncertainties in Real Time • Automatically Applies Enhancement Factors • ControLog® Automation Software The 9500 Humidity Generation System is capable of producing known humidity values using the fundamental, NIST proven, “two-pressure” principle. The 9500 is capable of continuously supplying relative humidity, dew point, frost point, parts per million, or other...

Open the catalog to page 2

ControLog Computer Screen Temperature Controlled Bath: The 9500 humidity generating system incorporates an extremely stable temperature bath. Bath temperature is digitally controlled by the computer to any value between 0 °C and 72 °C using PID (proportional-integral-derivative) algorithms. The test chamber, saturators, heat exchangers, and connecting tubing are immersed in approximately 20 gallons of distilled water that is circulated at the rate of 50 gallons per minute by a magnetically coupled centrifugal pump. Fast fluid circulation provides the temperature conditioning of these components...

Open the catalog to page 3

Automated Humidity Generation System SPECIFICATIONS RIGHT VIEW REAR VIEW LEFT VIEW 1. Traceable to the International System of Units (SI) through NIST-maintained standards. 2. Using glycol/water as the temperature bath heat transfer fluid from 0 to 5 °C and water as the temperature bath heat transfer fluid from 5 °C to 72 °C. 3. Temperature Control Stability is defined as the maximum deviation from a best fit line, as measured by the bath temperature control sensor. If data is logged digitally, the best fit line will be defined as the average value over the 10 minute period. All measurements...

Open the catalog to page 4

Model 9500 System Specs

Model 9500 System Specs

Catalog excerpts

All Thunder Scientific Croporation catalogs and technical brochures