Vaisala PTU300 Podręcznik Użytkownika Pobierz pdf (Strona 144)

User's Guide ______________________________________________________________________

142 _________________________________________________________________ M210796EN-A

** Defined as ±2 standard deviation limits of accuracy of the working

standard including traceability to NIST.

*** Defined as the root sum of the squares (RSS) of endpoint non-linearity,

hysteresis error, repeatability error and calibration uncertainty at

room temperature.

**** Defined as ±2 standard deviation limits of temperature dependence

over the operating temperature range.

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...+ 180 °C ± (1.5 + 0.015 x reading) % RH

with HUMICAP

180L2 for applications with demanding chemical

environment

at -10...+40

°C ± (1.0 + 0.01 x reading) % RH

at -40...+180

°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

Temperature (+ Operating pressure ranges)

PTU301/303/307 -40...+60 °C (-40...+140 °F)

Accuracy at +20 °C (+68 °F) ± 0.2 °C (± 0.2 °F)

Temperature units °C, °F

1 2 ... 139 140 141 142 143 144 145 146 147 148 149 ... 172 173

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Vaisala PTU300 Podręcznik Użytkownika Strona 144