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Humidity meters (Hygrometers)

 

Humidity is the amount of water vapor in the air. Water vapor is the gas phase of water and is invisible.[1] Humidity indicates the likelihood of precipitation, dew, or fog. Higher humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.

There are three main measurements of humidity: absolute, relative and specific. Absolute humidity is the water content of air.[2] Relative humidity, expressed as a percent, measures the current absolute humidity relative to the maximum for that temperature. Specific humidity is a ratio of the water vapor content of the mixture to the total air content on a mass basis.

 

 

 
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FLU0075B-FLUKE 972B TEMPERATURE HUMIDITY METER Key features Standard and optional external probes are available for limited space Accuracy of ±0.5 °C and ± 3% RH, to meet industrial grade testing requirements 99 sets of stored data, easy to review (Fluke 972B only) Auto logging mode for up to 8 hours of automatic temperature and humidity monitoring (Fluke 972B only) Comfortable grip and ergonomic design Product overview: Fluke 972B/972ES Temperature Humidity Meter Measure-and-view, industrial design, necessity for... Humidity Meter
fluke-971-temperature-humidity-meter.2
FLU0075-Fluke 971 Temperature Humidity Meter Backlit dual display of humidity and temperature Measures dew point and wet bulb temperatures 99 record storage capacity Ergonomic design with belt clip and protective holster Quick-response capacitance sensor with twist-open protective cover Compact and lightweight (188 g/6.6 oz) Temperature range from -20 °C to 60 °C (-4°F to 140 °F) Relative humidity from 5 % to 95 % Min/Max/Avg Data hold Low battery indicator Humidity Meter