Omega MFR012 Specification

MECHANICAL HYGROSTAT

MFR012

Adjustable Relative
Humidity Range

High Switching Capacity
DIN Rail Mountable

The MFR012 is designed to control the
relative air humidity inside of enclosures.
When connected to an enclosure heater,
(de-humidifier), it will turn the heater on at
the set humidity level in order to raise the
dew point. This helps prevent damage and
malfunction of electronic components
caused by condensation and corrosion. The
MFR012 can also be used to control cooling
fans, warning lights or other devices.

shown larger than
actual size.

SPECIFICATIONS

Adjustment Range: 35 to 95% (±3.0%)

relative humidity

Switching Difference (Hysteresis):

Approx. 4% RH @ 50% relative
humidity

Permissible Air Velocity: 50 ft/sec
(15 m/s)

Maximum Switching Voltage: 250 Vac

Attention: 250 V should only be switched in
a non-condensing environment

Contact Type: Change-over contact
Contact Resistance: <10 mOhm
Service Life: 100,000 cycles
Minimum Switching Capacity:

100 mA @ AC/DC 20 V

Maximum Switching Capacity:

5 A @ AC 230 V (resistive load)

1.0 A @ AC 230 V (inductive load
at cos j = 0.8); DC 20 W

EMI/EMC Compliance: EN 55014-1-2,
EN 61000-3-2, EN 61000-3-3

Connection: 3-pole terminal, 3 x AWG
14 max [2.5 mm² (0.1 in

Mounting: Clip for 35 mm (1.4") DIN rail
(EN 50022)

Dimensions: 67 H x 50 W x 38 mm D
(2.64 x 1.97 x 1.5")

Housing: Clip for 35 mm DIN rail
(EN 50022)

Weight: 60 g (2 oz)
Operating Temperature:

0 to 60°C (32 to 140°F)

Storage Temperature:

-20 to 80°C (-4 to 176°F)
Protection Type: NEMA 2 (IP20)

2

)]

Dimensions:
mm (in)

38 (1.5)

67 (2.64)

50 (1.97)

90

80

70

40

60

50

L

23

%

.

rF/RH

Application Examples:

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To Order

MODEL NO. DESCRIPTION
MFR01201220000 Mechanical humidity control, SPDT,

Comes with complete operator’s manual.

Ordering Example: MFR01201220000, mechanical hygrostat

(Specify Model Number)

Note: The critical relative humidity for most
components is 65%. Above 65% RH,
condensation can cause malfunction of
electronic equipment. Long-term, this can
lead to corrosion and permanent damage
of electronic components and systems.

AVAILABLE FOR FAST DELIVERY!

35 to 100% RH, 20 Vdc to 230 Vac

.