Vaisala Humicap HMW60U Guia do Utilizador descarregar pdf (Página 75)

Chapter 14 ____________________________________________________ Technical Specifications

VAISALA _______________________________________________________________________ 73

Wet bulb temperature 0 ... +100 ºC, 32 ... +212 ºF

Enthalpy 0 ... 160 kJ/g

Water vapor pressure 0 ... 1000 hPa

Accuracies of Calculated Variables

Accuracies of the calculated variables depend on the calibration

accuracy of the humidity and temperature sensors; here the accuracies

are given for ±2 %RH and ±0.2 °C.

Accuracy of Dewpoint Temperature °C

Relative humidity

Temp. 10 20 30 40 50 60 70 80 90 100

-40 1.86 1.03 0.76 0.63 0.55 0.50 0.46 0.43 — —

-20 2.18 1.19 0.88 0.72 0.62 0.56 0.51 0.48 — —

0 2.51 1.37 1.00 0.81 0.70 0.63 0.57 0.53 0.50 0.48

20 2.87 1.56 1.13 0.92 0.79 0.70 0.64 0.59 0.55 0.53

40 3.24 1.76 1.27 1.03 0.88 0.78 0.71 0.65 0.61 0.58

60 3.60 1.96 1.42 1.14 0.97 0.86 0.78 0.72 0.67 0.64

80 4.01 2.18 1.58 1.27 1.08 0.95 0.86 0.79 0.74 0.70

100 4.42 2.41 1.74 1.40 1.19 1.05 0.95 0.87 0.81 0.76

120 4.86 2.66 1.92 1.54 1.31 1.16 1.04 0.96 0.89 0.84

140 5.31 2.91 2.10 1.69 1.44 1.26 1.14 1.05 0.97 0.91

160 5.80 3.18 2.30 1.85 1.57 1.38 1.24 1.14 1.06 0.99

Accuracy of Mixing Ratio g/kg

(ambient pressure 1013 mbar)

Relative humidity

Temp. 10 20 30 40 50 60 70 80 90 100

-40 0.003 0.003 0.003 0.003 0.003 0.004 0.004 0.004 — —

-20 0.017 0.018 0.019 0.021 0.022 0.023 0.025 0.026 — —

0 0.08 0.09 0.09 0.10 0.10 0.11 0.11 0.12 0.13 0.13

20 0.31 0.33 0.35 0.37 0.39 0.41 0.43 0.45 0.47 0.49

40 0.97 1.03 1.10 1.17 1.24 1.31 1.38 1.46 1.54 1.62

60 2.68 2.91 3.16 3.43 3.72 4.04 4.38 4.75 5.15 5.58

80 6.73 7.73 8.92 10.34 12.05 14.14 16.71 19.92 24.01 29.29

100 16.26 21.34 28.89 40.75 60.86 98.85 183.66 438.56 — —

120 40.83 74.66 172.36 — — — — — — —

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Vaisala Humicap HMW60U Guia do Utilizador Página 75