Vaisala HMT360Series Podręcznik Użytkownika Pobierz pdf (Strona 79)

Chapter 9 ____________________________________________________________ Technical Data

VAISALA_______________________________________________________________________ 77

Water Activity in Jet Fuel Applications

Calculated Variables (Typical Ranges)

With HMP361 Probe

With HMP363, HMP364, HMP365, HMP367 and

HMP368 Probes

Table 10 Water Activity in Jet Fuel Applications Specifications

Property Description / Value

Measurement range 0 ... 1 a

at -40 ... +180 °C (-

40 ... +356 °F)

Accuracy when calibrated against high

quality, certified humidity standards

salt solutions (ASTM E104-85)

± 0.01 (0 ... 0.9)

± 0.02 (0.9 ... 1.0)

± 0.02 (0 ... 0.9)

± 0.03 (0.9 ... 1.0)

Response time (90 %) at +20 °C in still oil

(stainless steel filter)

10 min

Humidity sensor

Vaisala HUMICAP

Calculated variables available mass concentration of water

relative humidity of saturation

saturation temperature

Accuracy of the water content better than ± 15 % of the

reading

Table 11 HMP361 Calculated Variables Specifications

Property Description / Value

Dewpoint temperature -40 ... +60 °C

Mixing ratio 0 ... 160 g/kg d.a.

Absolute humidity 0 ... 160 g/m³

Wet bulb temperature 0 ... +60 °C

Table 12 HMP363, HMP364, HMP365, HMP367& HMP368

Probes Calculated Variables Specifications

Property Description / Value

Dewpoint temperature -40 ... +100 °C

Mixing ratio 0 ... 500 g/kg d.a.

Absolute humidity 0 ... 600 g/m³

Wet bulb temperature 0 ... +100 °C

1 2 ... 74 75 76 77 78 79 80 81 82 83 84 ... 96 97

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Vaisala HMT360Series Podręcznik Użytkownika Strona 79