Relative humidity – Vaisala PTU300 User Manual
Page 182
User's Guide _______________________________________________________________________
180 __________________________________________________________________ M210796EN-G
Relative Humidity
Measurement range
0...100 %RH
Accuracy (including non-linearity,
hysteresis and repeatability)
with
HUMICAP®180
for typical applications
HUMICAP®180C
for applications with chemical purge and/or
warmed probe
at +15... 25 °C
± 1 %RH (0...90 %RH)
± 1.7 %RH (90...100 %RH)
at -20...+40 °C
± (1.0 + 0.008 x reading) %RH
at -40...+ 60 °C
± (1.5 + 0.015 x reading) %RH
with
HUMICAP®180R
for applications with demanding chemical
environment
at -10...+40
°
C
±
(1.0 + 0.01 x reading) %RH
at -40...+60
°
C
±
(1.5 + 0.02 x reading) %RH
Factory calibration uncertainty (+20 °C)
±0.6 %RH (0...40 %RH)
±1.0 %RH (40...97 %RH)
(Defined as ± 2 standard deviation limits.
Small variations possible, see also calibration
certificate.)
Response time (90 %) at 20 °C in still air
8 s with grid filter
20 s with grid + steel netting filter
40 s with sintered filter