Vaisala HM45 User Manual

56
Technical Data
Relative Humidity and Temperature
Measurement Performance
Relative Humidity
Measurement range
0 ... 100 %RH
Accuracy (including non-linearity,
hysteresis, and repeatability)
HM41
at 0 … +40 °C
±1.5 %RH (0 ... 90 %RH)
±2.5 %RH (90 ... 100 %RH)
at -10 … 0 °C and +40 … +60 °C
±3.0 %RH (0 ... 90 %RH)
±4.0 %RH (90 ... 100 %RH)
HM42
at 0 … +40 °C
±1.5 %RH (0 ... 90 %RH)
±2.5 %RH (90 ... 100 %RH)
at -40 … -0 °C and +40 … +80 °C
±3.0 %RH (0 ... 90 %RH)
±4.0 %RH (90 ...100 %RH)
at +80 …+100 °C
±4.0 %RH*
*)
Not recommended for T
d
> 85 °C.
HM45
at 0 … +40 °C
±1.5 %RH (0 ... 90 %RH)
±2.5 %RH (90 ... 100 %RH)
at -40 … 0 °C and +40 … +60 °C
±3.0 %RH (0 ... 90 %RH)
±4.0 %RH (90 ... 100 %RH)
HM46
at 0 … +40 °C
±1.5 %RH (0 ... 90 %RH)
±2.5 %RH (90 ... 100 %RH)
at -40 … -0 °C and +40 … +80 °C
±3.0 %RH (0 ... 90 %RH)
±4.0 %RH (90 ... 100 %RH)
at +80 …+100 °C
±4.0 %RH*
*)
Not recommended for T
d
> 85 °C.
Factory calibration uncertainty
at +20 °C (+68 °F)
±1.5 %RH

Vaisala HM45 Specifications

General

Humidity Measurement Range	0 to 100 %RH
Resolution	0.1 %RH, 0.1 °C
Power Supply	2 x AA batteries
Protection Class	IP54
Display	LCD
Measurement Parameters	Humidity, Temperature
Temperature Measurement Range	-20 to +60°C (-4 to +140°F)
Operating Temperature Range	-20 to +60 °C
Storage Temperature Range	-40 to +70°C (-40 to +158°F)