Vaisala HUMICAP HMT310 Betriebsanweisung PDF herunterladen (Seite 90)

User's Guide _______________________________________________________________________

90 ___________________________________________________________________ M210619EN-E

Calculated Variables

Table 23 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

Absolute humidity

0 ... 160 g/m

0 ... 500 g/m

Wet bulb temperature

0 ... 60 ºC

0 ... +100 ºC

Enthalpy

-40 ... +1500 kJ/kg

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 — — — — — — —

1 2 ... 85 86 87 88 89 90 91 92 93 94 95 ... 104 105

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