Technical data – Vaisala HMP230 User Manual
Page 77
HMP230 SERIES
M210225en-B
User's Guide
71
9.
TECHNICAL DATA
9.1.
Relative humidity
Measuring range
0...100 %RH
Accuracy (including nonlinearity and repeatability)
maximum achievable accuracy when calibrated against high quality,
certified humidity standards:
±1 %RH (0...90 %RH)
±2 %RH (90...100 %RH)
when calibrated against salt solutions (ASTM E104-85):
±2 %RH (0...90 %RH)
±3 %RH (90...100 %RH)
Response time (90 %) at +20 °C in
15 s
still air (with sintered filter)
Sensors
HUMICAP
®
K:
humidity sensor with blue dots
on the sensor
HUMICAP
®
KC:
combined RH and T sensor
(part no.18258HM)
9.2.
Temperature
Measuring range
HMP231
-40...+60 °C
HMP233
-40...+80 / +120 °C
HMP234/235/237/238
-40...+180 °C
Typical accuracy of electronics at
+20 °C (+68 °F)
±0.1 °C
Typical temperature dependence of
electronics
0.005 °C/°C
Sensor
Pt 100 RTD 1/3 Class B IEC 751
9.3.
Calculated variables
Typical ranges - HMP231
dewpoint temperature
-40...+60 °C
mixing ratio
0...160 g/kg dry air
absolute humidity
0...160 g/m
3
wet bulb temperature
0...+60 °C
enthalpy
-40…+460 kJ/kg