Technical data

Measurement performance

Relative humidity

Measurement range

0 … 100 %RH

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

HUMICAPâ R2

HUMICAPâ R2C 3)

HUMICAPâ 180VC 3) 4)

Temperature

Sensor

Pt100 RTD Class F0.1 IEC 60751

Measurement range

−40 … +120 °C (−40 … +248 °F)

Accuracy 1)

±0.1 °C (±0.18 °F)

Factory calibration uncertainty 2)

±0.1 °C (±0.18 °F) at +23 °C (+73.4 °F)

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 HUMICAPâ 180VC sensor, accuracy is not specified below −20 °C (−4 °F) operating

temperature.

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Temperature [°C]

3.5

4.0

90

...

100

%RH

0 ... 90 %RH

HMP3 humidity measurement accuracy as a function of

temperature

0

0.1

0.2

0.3

0.4

Temperature [°C]

HMP3 temperature measurement accuracy over full

range

Operating environment

Operating temperature of probe head

−40 … +120 °C (−40 … +248 °F)

Operating temperature of probe body

−40 … +80 °C (−40 … +176 °F)

Storage temperature

−40 … +80 °C (−40 … +176 °F)

Operating environment

Suitable for outdoor use

Measurement environment

For air, nitrogen, hydrogen, argon,

helium, and oxygen 1)

IP rating of probe body

IP66

1)

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

Inputs and outputs

Operating voltage

15 … 30 V DC

Current consumption

10 mA typical, 500 mA max.

Digital output

RS-485, non-isolated

Protocols

Modbus RTU

Output parameters

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)

Compliance

EU directives and regulations

EMC Directive (2014/30/EU)

RoHS Directive (2011/65/EU)

amended by 2015/863

EMC compatibility

EN 61326‑1, industrial environment

Type approvals

DNV GL certificate no. TAA00002YT

Compliance marks

CE, China RoHS, RCM

Mechanical specifications

Connector

M12 5-pin A-coded male

Weight

302 g (10.65 oz)

Probe cable length

2 m (6.56 ft)

Materials

Probe

AISI 316L

Probe body

AISI 316L

Cable jacket

FEP

Accessories

Duct installation kit for humidity probe 210697

Solar radiation shield DTR502B

DTR502B

Cable gland M20×1.5 with split seal

HMP247CG

Indigo USB adapter 1)

USB2

1)

Vaisala Insight software for Windows available at www.vaisala.com/insight.