Vaisala HUMICAP HMM170 - Output Parameters

2.4 Output parameters
Output parameter is available
Output parameter is unavailable unless real temperature is written to Modbus register 0334
hex
from an external source
Output parameter is locked (value stays at latest valid reading) until measurement is possible
again
Output parameter is not valid for sensor type
Table 4 Availability of output parameters
Output parameter Output range HUMICAPâ R2C and 180VC sensor HUMICAPâ
180L2
sensor
Normal
operation
During
heating
During
purge
Absolute humidity
0 … 600 g/m
3
Absolute humidity at
NTP
0 … 600 g/m
3
Dew/frost point
temperature
−80 … +100 °C
Dew/frost point
temperature at 1 atm
−80 … +100 °C
Dew point temperature −80 … +100 °C
Dew point temperature
at 1 atm
−80 … +100 °C
Dew point temperature
dierence
−10 … +50 °C
Enthalpy −40 … 1500 kJ/kg
Mixing ratio 0 … 500 g/kg
Relative humidity 0 … 100 %RH
Relative humidity
(dew/frost)
0 … 100 %RH
Relative saturation 0 … 100 %RS
Temperature −70 … +180 °C
Water activity 0 … 1
Water concentration
0 … 10
6
ppm
Water concentration in
oil
0 … 10
6
ppm
Chapter 2 – Product overview
9