Vaisala HUMICAP HMM170 - Technical Data; HMM170 Specifications

7. Technical data
7.1 HMM170 specifications
Table 7 HMM170 measurement performance
Property Description/Value
Relative humidity
Measurement range 0 … 100 %RH
Accuracy
1) 2)
at +15 … +25 °C (59 … +77 °F) ±1 %RH (0 … 90 %RH)
±1.7 %RH (90 … 100 %RH)
at −20 … +40 °C (−4 … +104 °F) ± (1.0 + 0.008 × reading) %RH
at −40 … +180 °C (−40 … +356 °F) ± (1.5 + 0.015 × reading) %RH
Factory calibration uncertainty at
+20 °C (+68 °F)
3)
±0.6 %RH (0 … 40 %RH)
±1.0 %RH (40 … 90 %RH)
±1.1 %RH (90 … 95 %RH)
Humidity sensor types HUMICAPâ R2C
HUMICAPâ 180L2
HUMICAPâ 180VC
T
90
response time
4)
50 s with steel mesh filter
60 s with sintered filter
Temperature
Measurement range −70 … +180 °C (−94 … +356 °F)
Temperature sensor Pt100 RTD Class F0.1 IEC 60751
Typical accuracy at +20 °C (+68 °F) ±0.2 °C (± 0.36 °F)
1) Including non-linearity, hysteresis and repeatability.
2) With HUMICAP â 180VC sensor, accuracy is not specified below −20 °C (−4 °F) operating
temperature.
3) Defined as ±2 standard deviation limits. Small variations possible; see also calibration
certificate.
4) At +20 °C (+68 °F) in 0.1 m/s air flow with Vaisala HUMICAP â R2C sensor.
HMM170 User Guide M212259EN-D
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