HG10 Humidity Calibrator

The Michell HG10 Humidity Calibration System is a highly flexible computer-controlled automatic calibration system for humidity sensors. The HG10 is capable of repeatable generation of temperature and relative humidity set points over the range 1 to 95% RH
(-50 to +50°Cdp) at temperatures of +20 to +50°C with excellent stability. The supplied chilled mirror reference instrument provides traceability directly to national standards, and makes the system suitable for use in high-level calibration laboratories.

The supplied PC software allows the creation of automatic calibration programs, for evaluating the performance of humidity sensors over a range of operating conditions. The measured values from the chilled mirror reference are used in a closed control loop to enable repeatable set point generation, time and time again.


Product Features

  • Automatic calibration system with reference hygrometer
  • Wide range of humidity generation 1 to 95% RH, -50 to +50°Cdp
  • High accuracy ±0.1°C fundamental reference
  • User-configurable temperature and humidity profiling allows calibration cycles to be run without constant supervision
  • Very fast changes between generated relative humidity points
HG-10

Technical Specifications

General
Enclosure 19” Rack System, H= 2.1m
Power Supply 100 to 115 V or 220 to 240 V 50/60Hz
Pressure Swing Dryer
Gas Output Flow: 7 Nl/min
Pressure: 0.68 barg
Moisture Content: <1ppmV (<-75°Cdp)
Required Gas Supply Flow: 10 Nl/min
Pressure: 5 to 7 barg
Moisture Content: Oil and liquid water free
Type Twin column desiccant, pressure swing
Desiccant 4 Ångström Molecular sieve bead (4-8 mesh)
Timer Motorized cam
Operating Temperature +5 to +35°C
Generator
Generation Range Humidity: 1 to 95% RH (-50 to +50°Cdp)
Temperature: Dependant on temperature chamber
Generated Gas Output Air 2 Nl/min @ 0.5 barg via heat traced line
Dual Stage MFC Mixing Dual mass flow controllers
Power Consumption 550 V A maximum
Dual Stage MFC Mixing Dual mass flow controllers
Operating Temperature +5 to +40°C; 10 to 90% RH
Enclosure 19" Rack System, H= 2.1m
Control System Closed loop feedback
Reference Instrument
Performance
Measurement Technology Chilled Mirror
Measurement Range -80 to +85°Cdp
Measurement Accuracy ±0.1°Cdp
±0.1° temperature
Repeatability Better than ±0.1°C
Resolution 0.01 (0.1 for % RH)
Dew-Point Sensor
Mirror Gold plated copper
Temperature Measurement 4 wire Pt100, 1/10 DIN class B
Sample Flow Rate 0.1 to 0.7 Nl/min (recommended)
Integrated Flowmeter 0 to 1 Nl/min
Sensor Pressure Atmospheric
Configuration Remote
Remote PRT
Temperature Measurement 4 wire Pt100, 1/10 DIN class B
Monitor
Resolution 0.01°C
Dual Optics Detection Wide band red LED with dual photo sensors, all system insulated
Outputs Analog: 2 channels, 10 mV/°Cdp, 4-20 mA
Digital: RS232
Logic: Data hold, ABC Logic status, optics alarm
Operting Temperature 0 to + 40°C

Applications

Metrology

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