Mechanical Hygrostat MFR 012

The MFR 012 electro mechanical hygrostat is designed to control the relative humidity inside enclosures. When connected to an enclosure heater (dehumidifier), it will energize the heater at the humidity set point in order to raise the dew point. This helps prevent damage and malfunction of electronic components caused by condensation and corrosion. The MFR 012 can also be used to control cooling fans, warning lights, or other devices. The critical relative humidity level for most components is 65%. Above 65% RH, condensation can form and cause malfunctions of electronic equipment. Long term, this can lead to corrosion and permanent damage to electronic components and systems.

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  • Efficient condensation control
  • Adjustable relative humidity range
  • High switching capacity
  • DIN rail mountable

  • Efficient condensation control
  • Adjustable relative humidity range
  • High switching capacity
  • DIN rail mountable

  • Switching difference : 4 %RH (± 3 % tolerance) - at 50 %RH
  • Permissible air velocity : 50 ft/sec (15 m/s)
  • Contact type : Snap-action contact
  • Dimensions : 2.64 x 1.97 x 1.5” (67 x 50 x 38 mm)
  • Connection : 3-pole terminal, clamping torque 0.5 Nm max.: solid wire - AWG 14 max. (2.5 mm²) stranded wire1 - AWG 16 max. (1.5 mm²)
  • Housing : Plastic, UL 94V-0, light grey
  • Storage temperature : +32 to +140 °F (0 to +60 °C) / -40 to +140 °F (-40 to +60 °C)
  • Protection class : IP20

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