Vaisala HMP228 - Manual (Page 46)

HMP228
Operating Manual
M210282en-A
40
5. TECHNICAL DATA
5.1 Water activity
Measuring range of water activity 0...1
Accuracy (including nonlinearity and repeatability)
maximum achievable accuracy when calibrated against high quality,
when calibrated against salt solutions (ASTM E104-85):
±0.02 (0...0.9)
±0.03 (0.9...1.0)
maximum achievable accuracy when calibrated against high-quality,
certified humidity standards:
±0.01 (0...0.9)
±0.02 (0.9...1.0)
Response time (90 %) at +20 °C in
still oil (stainless steel filter)
10 min
Sensor HUMICAP

thin film polymer sensor
(part no. 19525HM)
5.2 Temperature
Measuring range -40...+180 °C
Typical accuracy of electronics at ± 0.1 °C
+20 °C (+68 °F)
Typical temperature dependence of ± 0.005 °C/°C
electronics
Temperature sensor Pt 100 IEC 751 1/3 class B
(part no. 10429)
5.4 Outputs
Two analogue outputs selectable 0...20 mA 4...20 mA
0...1 V 0...5 V
0...10 V
Typical accuracy of analogue output ± 0.05 % full scale
at +20 °C
Typical temperature dependence of
0.005 %/°C full scale
analogue output
Serial output
RS232C