Tekmar Snow Melting Control, Pulse Width Modulation 650

Tekmar Snow Melting Control, Pulse Width Modulation 650
by Tekmar

Tekmar Snow Melting Control, Pulse Width Modulation 650
Category: Tools
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Product Details

Manufacturer: Tekmar

Description of Tekmar Snow Melting Control, Pulse Width Modulation 650

The Snow Melting Control 650 is a microprocessor-based manual start / stop control that maintains a set temperature in a snow melting slab. The 650 uses pulse width modulation (PWM) to operate an on / off injection valve, pump, boiler or contactor for electric cables. Other 650 features include Slab Outdoor Reset, Warm Weather Cut Off, Cold Weather Cut Off, Snow Melting Setpoint and Snow Idling Setpoint. The control also has a built-in timer for timed melting events.

  • Literature: D 650, A 650's, D 001, D 070, D 079
  • Control: Microprocessor PI control; This is not a safety (limit) control
  • Packaged Weight: 1.3 lb. (600 g), Enclosure C, white PVC plastic
  • Dimensions: 4-3/4" H x 2-7/8" W x 7/8" D (120 x 74 x 22 mm)
  • Approvals: CSA C US, meets ICES & FCC regulations for EMI/RFI
  • Ambient Conditions: Indoor use only, -20 to 120+F (-30 to 50+C), < 90% RH non-condensing
  • Power Supply: Class 2, 24 V (ac) +10% 50/60 Hz 2 VA or 32 V (dc) +20% 0.04 A
  • Relays: 240 V (ac) 10 A 1/3 hp, pilot duty 240 VA 2 A
  • Sensors Included: NTC thermistor, 10 kOhms @ 77+F (25+C +0.2+C) +=3892 Outdoor Sensor 070 and Slab Sensor 072
  • On Time: 0:30 to 19:50 hours to 'Infinite'
  • Melting: 34 to 45+F (1 to 7+C)
  • Idling: Off, 23 to 34+F (Off, -5 to 1+C)
  • CWCO: Off, -22 to 23+F (Off, -30 to -5+C)
  • Temperature Display: Fahrenheit / Celsius

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