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Vaisala’s MM70 Hand-Held Moisture Meter allows for the consistent, dependable identification of moisture in lubrication and hydraulic oils. The MM70 is equipped for moisture measurements in oil in terms of  temperature and water activity (aw) which reveals the potential of free water formation. More still, measurements are independent of age, oil type and temperature.

Vaisala’s HMP75 Temperature and Humidity Probe is ideally crafted for indoor and outdoor spot measurements. The HMP75 is compatible with the entire Vaisala MI70 series meters; the HM70, GM70, DM70 and MM70.

The probe is equipped with the capability for measurement parameters of temperature, relative humidity, absolute humidity, dew point temperature, enthalpy, mixing ratio, water vapor pressure and wet bulb, pending on the model of the MI70 series meter employed.It's plastic protective sensor grid and enclosure give the probe a low thermal mass, thus producing a rapid response time. Suited with a -20° to 60° C temperature range, Vaisala’s HMP75 is one of the leading general purpose probes available. 

Measurement

Parameters

Relative humidity
Temperature
Absolute humidity*
Dew point temperature*
Enthalpy*
Mixing ratio*
Water vapor pressure*
Wet bulb

Measurement Range

0 ... 100 % RH
-20 ... +60 °C (-4 ... +140 °F) T

Measurement Accuracy

±1.0 % RH (0 ... 90 % RH)
±1.7 % RH (90 ... 100 % RH)
±0.2 °C (±0.36 °F) T

Operating Temperature

-20 ... +60 °C (-4 ... +140 °F)

Analog Outputs

0 ... 1 V

Housing Classification

IP65 (NEMA 4)