Vaisala HMP4 - Table 76 Integer Measurement Data Registers (Read-Only)

Table 76 Integer measurement data registers (read-only)
Register
number
Address Register description Data format Scale
factor
Oset Unit
257 0100
hex
Relative humidity 16-bit signed
integer
100 0 %RH
258 0101
hex
Temperature 16-bit signed
integer
100 0 °C
260 0103
hex
Dew point
temperature
16-bit signed
integer
100 0 °C
261 0104
hex
Dew/frost point
temperature
16-bit signed
integer
100 0 °C
262 0105
hex
Dew/frost point
temperature at 1 atm
16-bit signed
integer
100 0 °C
263 0106
hex
Dew point
temperature at 1 atm
16-bit signed
integer
100 0 °C
264 0107
hex
Absolute humidity 16-bit signed
integer
100 0
g/m
3
265 0108
hex
Mixing ratio 16-bit signed
integer
100 0 g/kg
266 0109
hex
Wet-bulb
temperature
16-bit signed
integer
100 0 °C
267 010A
hex
Water concentration 16-bit signed
integer
1 0 ppm
v
268 010B
hex
Water vapor
pressure
16-bit signed
integer
10 0 hPa
269 010C
hex
Water vapor
saturation pressure
16-bit signed
integer
10 0 hPa
270 010D
hex
Enthalpy 16-bit signed
integer
100 0 kJ/kg
271 010E
hex
Water activity 16-bit signed
integer
10000 0 -
272 010F
hex
Dew point
temperature
dierence
16-bit signed
integer
10 0 °C
273 0110
hex
Absolute humidity at
NTP
16-bit signed
integer
100 0
g/m
3
274 0111
hex
Water concentration
in oil
16-bit signed
integer
1 0 ppm
v
277 0114
hex
Relative saturation 16-bit signed
integer
100 0 %RS
Appendix A – Modbus reference
103