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Humidity Sensor FG80 (r.h.) Humidity Temperature Sensor TFG80

  • with the robust Polyga® humidity measuring element
  • excellent measuring properties
  • very high accuracy in high humidity
  • outstanding durability
  • washable measurement element
  • IP64
  • high-grade steel sensor material

General information

(T)FG80H with resistance output up to 10k ohms
(T)FG80J with current or voltage output


  • Humidity: ± 2,5% r.h. >40% r.h.
  • Temperature ± 0,5 K

POLYGA® transmitters demonstrate excellent measuring properties and accuracy in high humidity. They can be adjusted and cleaned in water. Their outstanding durability, reliability and robustness make them the classic choice for applications in food processing such as proofi ng and ripening or applications with extended high humidity.

With washable measurement element, IP64, high-grade steel sensor material

Technical data

humidity measuring range 0...100%rh
measuring accuracy
>40%rh ±2.5%rh
<40%rh according to tolerance diagram
working range 30...100%rh
temperature working range -30...+80ºC
measuring acc
uracy ±0.5ºC
measuring medium air, pressureless, non-aggressive
permissible ambient temperature at the housing -20...60ºC
at the sensor -40...+80ºC
medium temperature coefficient -0.1%/K at 20ºC and 50%rh
adjustment at average air pressure 430m NN
permissible air speed 8m/sec
with protective gauze (order no. 20.014) 15m/sec
half-life period at v=2m/sec min
sensor length ; sensor material 220mm; high-grade steel
fixing slots in housing base for channel mounting
(order no. 20.009) console for wall mounting
mounting position sensor vertically downwards, or horizontal
connecting terminals for conductor cross sections 0.5mm²
cable connection by twist nipple M20x1,5
electromagnetic compatibility
resistance to interference EN 50 082-2
interference emission EN 50 081-2
housing ABS
protective system IP64
weight ca 0.4 kg
Electrical data for passive sensors
Humidity Output 1 0...100 ohm linear 2-wire
0...200 ohm linear 2-wire
0...1000 ohm linear 2-wire
100...138.5 ohm linear 2-wire
5..100..5 ohm unlinear 3-wire
further resistance ranges on request
permissible load 1.0 watt
max. voltage 42V
insulation resistance 10 Mohm
Temperature Output 2 (TFG80H) Pt100 ref. DIN EN 60751
permissible load for air 1m/sec and t=0.1K 2 mA
Electrical data for active sensors
Humidity Output 1 0...20mA or 0...10V 4-wire system
... or 4...20mA 2-wire system (only with DC)
Temperature Output 2 0...20mA or 0..10V 4-wire system
.. or 4...20mA 2-wire system (only with DC)
operating voltage 15...30V DC or 24V AC + 10 %
max. load for current output 500 ohms
min. ballast resistance for voltage output 10k ohms
internal consumption per range 5 mA, DC version
internal consumption per range 10 mA, AC version
temperature measuring range see table
linearity distortion of the temperature output<0.5%

Do you have questions on this product?

Your contact person:

Badger Meter Swiss AG
Mittelholzerstrasse 8
CH-3006 Bern