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Hygro Module HM80

  • with Polyga® measuring element
  • scale range 30...100%rh
  • OEM duct version
  • version with two changeover contacts available (HM80-2)

General information

The hygro module HM80 is a humidity-dependent switch that can be fitted in equipment such as hygrostats, humidifiers, dehumidifiers, ventilating fans, driers and many more. The module represents an on-off controller with changeover contact. The switch connection is via a connecting terminal, but can also be supplied ready-made with cable connections. Several versions of different lengths are available as a shaft. Protection of the module is of the IP00 type.

Technical data

scale range 30..100%rh
measuring accuracy for measuring range > 50%rh ...... ±3.5%rh
for measuring range < 50%rh ±4%rh
range of operation 35...95%rh
measuring medium air, pressureless, non-aggressive
switching difference (microswitch) ref. to 50%rh .. approx. 4%rh
switching distance between the microswitches
for HM80-2 0...+15%rh
breaking capacity of the changeover contact
ohmic load (cos φ=1) AC 230V
inductive load (cos φ=0,7) 2A AC 230V
direct voltage 0.25A DC 230V
low voltage 125V AC
contact material silver
allowable storage temperature -30...60°C
allowable operating temperature 0...60°C
medium temp. coefficient -0.2%/K relative to 20°C and 50%rh
adjustment at average air pressure 430 m NN
allowable air speed 8m/sec
with gauze protection (order no. 20.014) 15m/sec
time constant T63 at v=2m/sec 120sec
sensor length, material 220mm, high-grade steel
connecting terminals for conductor cross sections 1.5mm2
cable connection via twist nipple M20x1.5
applied directives / standards
low-voltage directive 2014/35/EU
EMC directive 2014/30/EU
DIN EN 60730-1:2012-10
DIN EN 60730-2-13:2008-09
type of protection (external adjusting knob) IP00
measuring element Polyga®-measuring element, water resistent, washable
weight approx. 0.25 kg

Do you have questions on this product?

Your contact person:

Badger Meter Swiss AG
Mittelholzerstrasse 8
CH-3006 Bern