Rotronic HM4 Instrukcja Użytkownika Pobierz pdf (Strona 8)

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

8 of 41

Document Title

3.3 Calculated Parameters

The HM4 can calculate all psychrometric parameters and assign them to the outputs with the HW4 software.

Dew point (Dp)

Frost point (Fp)

Wet bulb temperature (Tw)

Enthalpy (H)

Vapour concentration (Dv)

Specific humidity (Q)

Mixing ratio (R)

Saturation vapour concentration (Dvs)

Vapour partial pressure (E)

Water vapour saturation pressure (Ew)

Remark:

The above parameters are dependent on barometric pressure. Using the HW4 software, it is possible to store

the barometric pressure at the probe in the HM4 probe. Programming of the HM4 with the HW4 software is

described in the manual E-M-HW4v3-F2-023.

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Rotronic HM4 Instrukcja Użytkownika Strona 8