MECHANICAL HUMIDITY

MECHANICAL HUMIDITY

MHR 1220
MECHANICAL HUMIDITY

The electromechanical thermostat MHR 1220 is designed to control enclosure heaters so that the dew point is raised when a critical relative humidity of 65% is exceeded. In this way condensation and corrosion is effectively prevented.
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Specifications

Technical data: MHR 1220
Measuring range 35-95% relative humidity
Measurement accuracy ±3.0% relative humidity
Switching difference at 50% RH 4% RH
Peak voltage 250V AC
Switching capacity, maximum load
Resistive load		 5A 250V(service life 50,000 cycles)
Inductive load cos = 0.8 0.2A 250V AC
Inductive load L/R=3ms 1A-50V DC,0.5A-75V DC
Switching capacity, minimum load 100mA,20V DC/AC
Contact type Change-over contact
Radio interference suppression level N(in compliance with VDE 0875)
Permissible ambient temperature 0-60℃
Mean temperature coefficient -20% relative humidity/k at 20℃
and 50％ relative humidity
Permissible air velocity 15m/sec
Half value period
Where V= 2m/sec		 1.2min
Mounting position No constraints
Connection Terminals in casing, 3 × 2.5mm2，3極 3 × 2.5mm2
Casing Plastic UL94 V-0
Mounting Clip for 35mm DIN rail(EN 50022)
Protection type IP20 (DIN40050)
Dimensions H × W × D  67×50×38 mm
Weight 60g

Dimensions

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