Technical specifications, Probes hmp75, hmp76 and hmp77, Measured variables – Vaisala HM70 User Manual

Page 73: Relative humidity, Chapter 14

Chapter 14 ____________________________________________________ Technical Specifications

VAISALA _______________________________________________________________________ 71

CHAPTER 14

TECHNICAL SPECIFICATIONS

Probes HMP75, HMP76 and HMP77

Measured Variables

Relative Humidity

Measurement range

0 ... 100%RH

Accuracy (including non-linearity, hysteresis and repeatability)

at +15...+25 ºC

1 % RH (0 ... 90 % RH)

1.7 % RH (90 ... 100 % RH)

at -20...+40 ºC

(1.0 + 0.008 x reading) % RH

at -40 ... -20 ºC, +40 ... +180 ºC

(1.5 + 0.015 x reading) % RH

Factory calibration uncertainty

(**)

(+20 ºC)

± 0.6 % RH (0...40 % RH)

± 1.0 % RH (40...97 % RH)

(**)

Defined as ±2 standard deviation limits. Small variations possible,