Vaisala HMT370EX - Technical Data; Specifications

13. Technical data
13.1 Specifications
Table 38 Measurement performance
Property Description/value
Relative humidity
Measurement range 0 … 100 %RH
Accuracy at +23 °C (+73.4 °F)
1)
±0.8 %RH (0 … 90 %RH)
Factory calibration uncertainty
2)
±0.5 %RH (0 … 40 %RH)
±0.8 %RH (40 … 95 %RH)
T
63
response time 15 s
Sensor options HUMICAPâ R2
HUMICAPâ 180L2
3)
Temperature
Measurement range −70 … +180 °C (−94 … +356 °F)
Accuracy at +23 °C (+73.4 °F) ±0.1 °C (±0.18 °F)
Factory calibration uncertainty ±0.1 °C (±0.18 °F) at +23 °C (+73.4 °F)
Sensor Pt1000 RTD Class F0.1 IEC 60751
Other available measurement parameters
Dew point temperature, dew point / frost point temperature, absolute humidity, mixing ratio, wet-
bulb temperature, water concentration, water vapor pressure, water vapor saturation pressure,
enthalpy, dew point temperature dierence, absolute humidity at NTP, water mass fraction, relative
saturation, water activity, water concentration in mineral transformer oil, water concentration in
JET A-1 fuel, saturation temperature
4)
1) Defined against calibration reference. Including non-linearity, hysteresis, and repeatability.
2) Defined as ±2 standard deviation limits. Small variations possible; see calibration certificate.
3) The HUMICAP â 180L2 sensor is used in the HMP378F and HMP378H probe variants that are
intended for oil and JET A-1 fuel measurements. For specifications, see Table 39 (page 133).
4) For units and abbreviations, see Available measurement parameters (page 12).
HMT370EX User Guide M212305EN-B
132