Rotronic HM4 Instrukcja Użytkownika Pobierz pdf (Strona 34)

E-M-HM4-V0_08

ROTRONIC AG

Bassersdorf, Switzerland

Document Code

Unit

HM4 Humidity and Temperature Probe with

Heated Sensor

Instruction Manual

Document Type

Page

34 of 41

Document Title

Temperature Measurement

Sensor

Pt100 RTD, Class B 1/3 DIN

Measurement range

-40…85 °C, standard scale: -40…60 °C

Measuring accuracy @ 23 °C

±0.1 °C

Extended measuring accuracy

±0.1 °C @ -40…60 °C (sensor heating switched on)

±0.15 °C @ 60…85 °C (sensor heating switched on)

Long-term stability

<0.1 °C/year

Response time

Typically: 30 s, (wind velocity at sensor 1 m/s)

Calculated Parameters

Psychrometric calculations

Dew point (Dp) above and below freezing

Frost point (Fp) below freezing point and dew point above freezing point

Wet bulb temperature (Tw)

Enthalpy (H)

Vapour concentration (Dv)

Specific humidity (Q)

Mixing ratio by weight (R)

Vapour concentration at saturation (Dvs)

Vapour partial pressure (E)

Vapour saturation pressure (Ew)

Startup Time and Measurement Interval

Startup time

<9 s (typical)

Measurement interval

20 s (typical)

DRAFT

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 40 41

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