Technical data

Measurement performance

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)

Sensor

HUMICAPâ 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)

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.

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

HMP1 humidity measurement accuracy as a function of

temperature

0

0.1

0.2

0.3

0.4

Temperature [°C]

0.5

HMP1 temperature measurement accuracy over full range

Operating environment

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 1)

IP rating

IP50

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

2 mA typical, 200 mA max.

Digital output

RS-485, non-isolated

Protocol

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

Compliance marks

CE, China RoHS, RCM

Mechanical specifications

Connector

M12 5-pin A-coded male

Weight

38 g (1.34 oz)

Materials

Probe

AISI 316L

Probe body

PBT

Probe body 112 [4.41]

162 [6.38]

M12/5

16

[0.63]

Probe head 50 [1.97]

mm

[in]

HMP1 probe dimensions

52 [2.05]

Ø 5.9 [0.23]

4 mm hex

38 [1.50]

mm

[in]

25 [0.98]

Probe holder ASM213582 dimensions

Accessories

Indigo USB adapter 1)

USB2

1)

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

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