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Modular Humdity and Temperature Sensor with exchangeable digital measuring head

  • with exchangeable digital measuring head
  • Plug-and-Measure Unit PMU-V
  • with integrated hx processor for determination of the values dew point temperature, mixing ratio, enthalpy, absolute humidity and wet bulb temperature
  • current or voltage output
  • rod-shaped sensor or duct version with high grade steel sensor tube
  • with capacitive Mela® humidity sensing element

General information

PM-V sensors with integrated hx-processor measure humidity by means of a humidity-dependant condenser. The capacitive Mela® humidity measuring element, produced using thinfilm technology, consists of a base plate, on which the electrodes are housed and a hygroscopic polymer layer above it. The hygroscopic polymer layer absorbs water molecules from the medium to be measured (air) or releases them, thereby altering the capacity of the condenser. 

Technical data

Digital Measuring Head PMU-V
measuring range0..100%rh
measuring accuracy 10...90%rh at 23°C±1.5%rh
at <10%rh or >90%rh±2%rh
at <10°C or >40°C±0.05%rh/K additional
resolution0.01%rh (read out)
hysteresis< 1%rh
measuring elementPt1000 1/3DIN
measuring range-40...+85°C
measuring accuracy±0.15 K at 23°C
resolution0.01K (read out)
influence of temperature (TK)<0.005 K/K
Transmitter PMO...V with hx Processor
physical outputs
dew point temperature0...70°C
enthalpy0...80 kJ/kg
mixing ratio0...100g/kg dry air
absolute humidity0...20g/m³ or 0...100g/m³
wet-bulb temperature-10...+50°C
relative humidity0...100%rh
temperature ranges-30...+70°C
response time t63 at v=2m/s< 15 s
electrical outputs
voltage2x 0...1VDC, or 2x 0...10VDC
current (PM80V and PM100V)2x 0(4)...20mA
power supply:
PM80V + PM100V: 0 ...1V:6 ... 30V DC / 24V AC ±10%
0 ... 10V:15 ... 30V DC / 24V AC ±10%
0(4) ... 20mA:15 ... 30VDC
0 ... 1V:6 ... 30VDC
0 ... 10V:15 ... 30VDC
electromagnetic compatibilityref. EN61326-1
consumption of electronics<10 mA
load for current outputacc. diagram
permissible ambient temperature
at the sensor tube-40...+85°C
at the housing (PM80V)-40...+85°C
max. air speed15m/s
minimum air speed across the measuring head
for output: 2 x 0(4)...20mA1,5 m/s
2 x 0...1V, 2 x 0...10V1 m/s
housing PMO100VABS light grey
PMO80Valuminium die-casting,varnished
PMO15Vstainless steel
protective system housing PM15V, PM80VIP65
protective system housing PM100VIP64
protective system connectorIP65
probe materialstainless steel
mounting positionoptional
contactingconnecting terminals 1.5mm2 in the housing
PM15V length of connection cable1.5m

Do you have questions on this product?

Your contact person:

Badger Meter Swiss AG
Mittelholzerstrasse 8
CH-3006 Bern