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HG-1 Humidity Calibrator |
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The HG-1 is a high precision,
portable humidity calibrator. Using Michell's Optidew Chilled Mirror
instrument as the reference measuring instrument, humidity can be controlled
across the range 2 to 95% RH (at room ambient operating temperature). The HG1
is configured to operate as a stand alone calibrator or to operate from a dry
compressed air supply enabling easy on-site calibrations. The front panel
mounted flow-meters enable the mixing ratio of a dry and wet air stream to
generate the required humidity. The chamber cover can be customised to suit the
transmitters and sensors being calibrated.
Product Features
- Totally portable
- Easy to use
- Range 2 to 90 % RH, -30 to +20°C dp (-22 to +68°F dp)
- Traceable to national standards
- Integrated chilled mirror reference hygrometer
- Accuracy ±0.2°C dew point (0.36°F)
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Technical Specification |
| Calibration Range |
2 to 90% RH at room ambient temperature (-30 to +20°C dew point (-22 to +68°F) |
| Accuracy |
Typically ±2% of reading (% relative humidity), 0.2°C dew point (0.36°F), 0.1°C (0.18°F) ambient temperature (with Optidew reference hygrometer) |
| Calibration |
Through certified calibration of integrated Traceability Optidew reference hygrometer, to NPL and NIST |
| Operating Temp. |
10 to 35°C ambient (50 to 95°F) (note - temperature control of the measurement chamber can be specified as an option). |
| Power |
110 V or 240 V, 50 - 60 Hz, 60 VA |
| Calibration Chamber |
Steel with gasket seal, 120 x 120 x 250mm (WxHxD) (4.7 x 4.7 x 9.8 inches) |
| Overall Dimensions |
Painted aluminium case, 520 x 305 x 400mm (WxHxD) 20.5 x 12 x 15.7 inches |
| Zero Stability |
±0.25% of span per month |
| Span Stability |
±0.25% of span per month |
| Sample Flow Rate |
0.4 l/min for the sensor cell (0.85 scfh) |
| Pressure |
Atmospheric to maximum of 3 bar (43.5 psi) |
| Weight |
20kg approx (44 lb) |
Applications |
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