• New
    Humidity and Temperature Transmitter

Humidity and Temperature Transmitter

  • ±3%RH outdoor sensors for HVAC​
  • Integrated solar radiation shield
  • Minimal maintenance

±3%RH Outdoor Sensor for HVAC

A reliable basic outdoor humidity sensor for a pole or wall installation. Dew point, wet bulb and enthalpy outputs can be selected by dip switch instead of the default RH output. 
The Humidity and Temperature Sensor Transmitter Series HMS80 are optimized for outdoor measurements HVAC. They feature an integrated solar radiation shield, which is a must for accurate humidity and temperature measurements in outdoor conditions. Both 2-wire HMS82 and 3-wire HMS83 versions are available.

Key Benefits

Easy Installation

The HMS80 can be mounted directly to a wall or pole without any extra accessories.

Low Maintenance

The INTERCAP sensor can easily be replaced in the field with minimum downtime.

Integrated radiation shields

The radiation shields reduce the influence of solar radiation on temperature and humidity measurements

Model  Type  Output IP Rating
HMS82 Outdoor, RH+T 2-wire, current output IP65
HMS83 Outdoor, RH+T 2-wire, current output IP65

Relative Humidity

Measurement range 0 ... 100 %RH
Accuracy at temperature range   +10 … +30 °C (+50 … +86 °F)
0 … 90 %RH  ±3 %RH
90 … 100 %RH ±5 %RH
Accuracy at temperature range  -40 … -20 °C (-40 … -4 °F)
0 … 100 %RH ±7 %RH
Stability in typical HVAC applications ±2 %RH over 2 years
Accuracy at temperature range -40 … -20 °C (-40 … -4 °F):
0 ... 100%RH ±4 %RH
Humidity sensor Vaisala INTERCAP

Temperature

Measurement range  -40 … +60 °C (-40 … +140 °F)
Accuracy at +20 °C (+68 °F) ±0.3 °C (±0.54 °F)
Temperature dependence ±0.01 °C/°C
Temperature sensor Pt1000 RTD Class F0.1 IEC 60751

Calculated Parameters

Measurement range for dew point temperature and wet bulb temperature -40 … +60 °C (-40 … +140 °F)
Measurement range for enthalpy -40 … 460 kJ/kg (-10 … +190 BTU/lb)
Accuracy at 20 °C (68 °F) and 80 %RH:  
Dew point  ±0.9 °C (1.6 °F)
Wet bulb temperature ±0.7 °C (1.3 °F)
Enthalpy ±2 kJ/kg (0.9 BTU/lb)
Operating temperature  -40 … +60 °C (-40 … +140 °F)
Operating humidity 0 … 100 %RH
Maximum wind/flow speed 30 m/s (67 mph)
Storage temperature -40 … +60 °C (-40 … +140 °F)
EMC compliance EN61326-1, Industrial Environment

Current Output Model HMS82 (2-wire)

Outputs 4 … 20 mA, loop powered
Loop resistance 0 … 600 Ω
Supply voltage 20 … 28 VDC at 600 Ω load
10 … 28 VDC at 0 Ω load

Voltage Output Model HMS83 (3-wire)

Outputs 0 … 10 V
Load resistance 10 kΩ min
Supply voltage 18 … 35 VDC
24 VAC ±20 % 50/60 Hz
Max. wire size  1.5 mm2 (AWG 16)
Standard housing color White (RAL9003)
Housing material PC + 10 %GF (UL-V0 approved)
INTERCAP sensor 15778HM
10 pcs of INTERCAP sensors INTERCAPSET-10PCS
Conduit fitting + O-ring
(M16 × 1.5 / NPT1/2 Inch)
210675SP
Conduit fitting + O-ring
(M16 × 1.5 / PG9, RE-MS)
210674SP
Fastening set HMS80 237805
Membrane Filter ASM210856SP
Terminal Block, Blue 236620SP