HMP1 specifications - HMP1 - HMP3 - HMP4 - HMP5 - HMP7 - HMP8 - HMP9 - HMPX - MMP8 - MMPX - TMP1 - TMPX

HMP Series with MMP8 and TMP1 User Guide
Document code
M212022EN
Revision
K
Language
English
Product
HMP1
HMP3
HMP4
HMP5
HMP7
HMP8
HMP9
HMPX
MMP8
MMPX
TMP1
TMPX
Document type
User guide
Table 1. HMP1 measurement performance
Property Description/Value
Relative humidity
Measurement range 0–100 %RH
Accuracy at +23 °C (+73.4 °F) 1 2 ±1.0 %RH (0–90 %RH)
Factory calibration uncertainty 3

±0.7 %RH (0–40 %RH)

±1 %RH (40–95 %RH)
Non-linearity 0.4 %RH
T63 response time 4 21 s
Sensor HUMICAP® I
Temperature
Measurement range −40 … +60 °C (−40 … +140 °F)
Accuracy at +23 °C (+73.4 °F) 1 2 ±0.2 °C (±0.36 °F)
Factory calibration uncertainty 3 ±0.1 °C (±0.18 °F) at +23 °C (+73.4 °F)
T63 response time 4 70 s
Figure 1. HMP1 humidity measurement accuracy as a function of temperature
Figure 2. HMP1 temperature measurement accuracy over full range
Table 2. HMP1 operating environment
Property Description/Value
Operating temperature −40 … +60 °C (−40 … +140 °F)
Storage temperature −40 … +60 °C (−40 … +140 °F)
Measurement environment

For air, nitrogen, hydrogen, argon, helium, and oxygen 5

IP rating

IP50: Limited protection against dust.
Table 3. HMP1 inputs and outputs
Property Description/Value
Operating voltage 15–30 V DC
Current consumption 2 mA typical, 200 mA max.
Digital output RS-485, non-isolated
Protocol Modbus RTU
Table 4. HMP1 output parameters
Output parameter name and unit
Absolute humidity (g/m3) Relative humidity (%RH)
Absolute humidity at NTP (g/m3) Relative humidity (dew/frost) (%RH)
Dew point temperature (°C) Temperature (°C)
Dew/frost point temperature (°C) Water concentration (ppmv)
Dew/frost point temperature at 1 atm (°C) Water concentration (wet basis) (vol‑%)
Dew point temperature at 1 atm (°C) Water mass fraction (ppmw)
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 5. HMP1 compliance
Property Value/Description

EU directives and regulations

EMC Directive (2014/30/EU)

RoHS Directive (2011/65/EU) amended by 2015/863

Electromagnetic compatibility (EMC)

EN 61326‑1, industrial environment

Compliance marks

CE, China RoHS, RCM
Table 6. HMP1 mechanical specifications
Property Description/Value
Connector M12 5-pin A-coded male
Weight 38 g (1.34 oz)
Materials
Probe AISI 316L
Probe body PBT
Figure 3. HMP1 probe dimensions
1 Defined against calibration reference. Including non-linearity, hysteresis, and repeatability.
2 In typical room conditions.
3 Defined as ±2 standard deviation limits. Small variations possible; see calibration certificate.
4 In still air.
5

Consult Vaisala if other chemicals are present. Consider safety regulations with flammable gases.