HMP3 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. HMP3 measurement performance
Property Description/Value
Relative humidity
Measurement range 0–100 %RH, at max. +95 °C (203 °F) Td
Accuracy at +23 °C (+73.4 °F) 1 ±0.8 %RH (0–90 %RH)
Factory calibration uncertainty 2

±0.5 %RH (0–40 %RH)

±0.8 %RH (40–95 %RH)
T63 response time 15 s
Sensor options

HUMICAP® R2

HUMICAP® R2C 3

HUMICAP® 180VC 3 4
Temperature
Sensor Pt100 RTD Class F0.1 IEC 60751
Measurement range −40 … +120 °C (−40 … +248 °F)
Accuracy 1 5 ±0.1 °C (±0.18 °F)
Factory calibration uncertainty 2 ±0.1 °C (±0.18 °F) at +23 °C (+73.4 °F)
Figure 1. HMP3 humidity measurement accuracy as a function of temperature
Figure 2. HMP3 temperature measurement accuracy over full range
Table 2. HMP3 operating environment
Property Description/Value
Operating temperature of probe body −40 … +80 °C (−40 … +176 °F)
Operating temperature of probe head −40 … +120 °C (−40 … +248 °F)
Operating humidity of probe head Max. +100 °C (212 °F) Td
Storage temperature −40 … +80 °C (−40 … +176 °F)
Operating environment Suitable for outdoor use
Measurement environment

For air, nitrogen, hydrogen, argon, helium, and oxygen 6
IP rating of probe body

IP66: Dust-tight. Protected from powerful water jets from any direction.
Table 3. HMP3 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
Protocols Modbus RTU
Table 4. HMP3 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. HMP3 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

Type approvals

DNV GL certificate no. TAA00002YT

Compliance marks

CE, China RoHS, RCM
Table 6. HMP3 mechanical specifications
Property Description/Value
Connector M12 5-pin A-coded male
Weight (with a 2-m cable) 302 g (10.65 oz)
Probe cable length 0.15 m (0.49 ft), 2 m (6.56 ft), 5 m (16.40 ft) or 10 m (32.80 ft)
Materials
Probe AISI 316L
Probe body AISI 316L
Cable jacket FEP
Figure 3. HMP3 probe dimensions
1 Defined against calibration reference. Including non-linearity, hysteresis, and repeatability.
2 Defined as ±2 standard deviation limits. Small variations possible; see calibration certificate.
3 Sensor purge feature available with this sensor.
4 H2O2 resistant. With HUMICAP® 180VC sensor, accuracy is not specified below −20 °C (−4 °F) operating temperature.
5 Exposing temperature sensor to temperatures outside −20 … +150 °C (−4 … +302 °F) may cause permanent additional deviation of ±0.1 °C (0.18 °F)
6

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