Vaisala HUMICAP HMT330 SERIES Guía de usuario descargar pdf (Pagina 169)

Chapter 8 ____________________________________________________________ Technical Data

VAISALA ______________________________________________________________________ 167

Calculated Variables

Table 34 Calculated Variables (Typical Ranges)

Variable HMT331 Probe HMT333 Probe HMT334/335/337/338

Probes

Dewpoint temperature -20 ... +60 ºC -20 ... +80 ºC -20 ... +100 ºC

Mixing ratio 0 ... 160 g/kg dry air 0 ... 500 g/kg dry air 0 ... 500 g/kg dry air

Absolute humidity 0 ... 160 g/m

0 ... 500 g/m

Wet bulb temperature 0 ... 60 ºC 0 ... +100 ºC 0 ... +100 ºC

Enthalpy -40 ... +1500 kJ/kg -40 ... +1500 kJ/kg -40 ... +1500 kJ/kg

Water vapor pressure 0 ... 1000 hPa 0 ... 1000 hPa 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 — — — — — — —

1 2 ... 164 165 166 167 168 169 170 171 172 173 174 ... 205 206

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