Vaisala HMP80 Series, User Manual, Page: 44 / 54

Property Description/Value
without cable IP55: Limited protection against dust. Protected
from water jets from any direction.
1) Consult Vaisala if other chemicals are present. Consider safety regulations with flammable
gases.
Table 8 HMP80 series inputs and outputs
Property Description/Value
Operating voltage 15 … 30 V DC
Current consumption 10 mA typical, 500 mA max.
Digital output RS-485, non-isolated
Table 9 HMP80 series output parameters
Output parameter name and unit
Absolute humidity (g/m
3
)
Relative humidity (%RH)
Absolute humidity at NTP (g/m
3
)
Relative humidity (dew/frost) (%RH)
Dew point temperature (°C) Temperature (°C)
Dew/frost point temperature (°C) Water concentration (ppm
v
)
Dew/frost point temperature at 1 atm (°C) Water concentration (wet basis) (vol
‑
%)
Dew point temperature at 1 atm (°C) Water mass fraction (ppm
w
)
Dew point temperature difference (°C) Water vapor pressure (hPa)
Enthalpy (kJ/kg) Water vapor saturation pressure (hPa)
Mixing ratio (g/kg) Wet-bulb temperature (°C)
Table 10 HMP80 series mechanical specifications
Property Description/Value
Connector type M12 5-pin A-coded male
Weight HMP80N: 200 g (7 oz)
HMP80L: 300 g (10 oz)
Materials
Probe handle Polyamide (PA) and thermoplastic elastomer
(TPE)
Probe shaft Stainless steel (AISI 316L)
HMP80 Series User Guide M212903EN-A
44