The MG101 hygrometer calibration system is a reliable solution for generating precise, repeatable moisture content in gas streams to calibrate and verify humidity and moisture instruments. Based on a proven gas-dilution principle, it mixes a saturated gas stream with dry gas to produce controlled dew- or frost-point conditions across a wide, adjustable range. With accuracy of ±1°C and a generation range from -75°C to 10°C dew/frost point, it ensures consistent and dependable calibration performance.
Designed for simplicity and portability, the MG101 operates without electrical power and requires only a dry nitrogen supply, making it ideal for field calibration applications. It is commonly used to verify moisture sensors such as aluminum oxide probes and, when paired with a chilled mirror reference hygrometer, provides a cost-effective and efficient calibration solution for industrial moisture measurement systems.
The MG101 generates precise, repeatable dew/frost points in a carrier gas to calibrate and verify moisture and humidity sensors, including Panametrics aluminium oxide moisture probes. Used with a chilled mirror reference it forms a complete, economical calibration system.
It uses the gas dilution principle. A dry gas supply is split into two streams: one is saturated with water vapour at a known temperature, the other stays dry. The streams are recombined, diluting the saturated stream with a controlled amount of dry gas to set the desired water vapour level. Single or two stage dilution covers the full range.
The MG101 generates frost/dew points from −75°C up to +10°C below ambient temperature, equivalent to about 1.2 ppmv to 12,120 ppmv at one atmosphere and 20°C ambient. Accuracy is ±1°C dew/frost point.
Dry nitrogen is preferred, supplied at 4 bar to 5 bar (55 psig to 60 psig). The supply gas must be at least 25°C drier than the driest dew/frost point to be generated. Maximum flow rate is 9.2 litres per minute and outlet pressure is adjustable from ambient to 1 bar.
No. The MG101 requires no electrical power. It operates entirely from a dry nitrogen gas supply, which makes it well suited to field calibration where mains power may not be available.
| Type | Title | Language | Format | Download |
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| Datasheets | MG101 Datasheet | English | Download |
