The MFR012 is designed to control therelative air humidity inside of enclosures.When connected to an enclosure heater,(de-humidifier), it will turn the heater on atthe set humidity level in order to raise thedew point. This helps prevent damage andmalfunction of electronic componentscaused by condensation and corrosion. TheMFR012 can also be used to control coolingfans, warning lights or other devices.
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 mΩ Service Life: 100,000 cycles Minimum Switching Capacity: 100 mA @ AC/DC 20 V Maximum Switching Capacity: 5A @ AC 230V (resistive load), 1.0A @ AC 230V (inductive load at cos j = 0.8) DC 20W 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 in2)] Mounting: Clip for 35mm (1.4") DIN rail (EN 50022) Dimensions: 67H x 50W x 38 mmD (2.64 x 1.97 x 1.5") Housing: Clip for 35mm DIN rail (EN 50022) Weight: 60g (2oz) 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) Application Examples:    • Electrical and Electronic Enclosures    • Telecommunication Systems    • Display Panels    • Ticket Dispensers    • Automatic Teller Machines (ATM’s)    • Access and Parking Control Systems 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.
Will the MFR0122 work to de-humidify ( turn on a make up air unit ) a wand-wash car wash bay? Do the contacts close on humidity rise? and switch on 24VAC?
Asked by: Humidor
Thank you for your inquiry. This product is designed to be installed in an enclosure to monitor the relative air humidity and control an electric heater to dehumidify the air within enclosure. It cannot be installed outdoors or in a location with direct exposure to water.