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The PM-2B sensor control is used to detect snowfall and low temperature to activate the ProMelt Mats or Cables. It is a "pole-mounted" control with a "fixed" moisture sensor mounted to the top. The PM-2B offers automatic activation, rain/snow detection, adjustable trigger temperature, and a drying cycle, as well as "manual on" operation. It operates on line voltage (120/208/240V, not 277V) and has a 30 Amp capacity. It is a stand-alone control intended for relatively small systems (up to 30 Amps). It should not be used with our ContactorPro series of ProMelt controls, as those are designed for 24V control sensors. The unit measures approximately 5" x 7" x 3".
A recommended upgrade to the PM-2B is our PM-DP Control Panel. This control allows convenient indoor monitoring and control of the system for manual on, automatic, and standby operation. It communicates with the PM-2B through a simple low-voltage cable.
The PM-224 and PM-824 are used to detect snowfall and low temperature to activate the ProMelt Mats or Cables. The PM-224 has a moisture sensor "fixed" to the top. The PM-824 has a remote moisture sensor, which allows mounting the control in a more convenient location. It can be mounted on a wall or inside the building and the sensor outside exposed to the snowfall, adding convenience of operation and adjustment. Both models offer automatic activation, rain/snow detection, adjustable trigger temperature, and a drying cycle, as well as "manual on" operation. Either control will operate in conjunction with our Contactor Pro series of ProMelt controls, which should be ordered separately. The unit measures approximately 5" x 7" x 3".
The PM-HSC5 is a slab-mounted snow detector. It is used to detect snowfall and low temperature to automatically activate the ProMelt Mats or Cables. It has built-in temperature and moisture detection and a drying cycle after snow melting is complete. It is comprised of a sensor and sensor socket that is embedded in the slab where ProMelt is installed. This sensor operates in conjunction with our ContactorPro series of ProMelt controls, ordered separately.
The Contactor Pro panels are complete "turn-key" solutions for activating larger systems of ProMelt Mats and Cables when used in combination with a PM-224, PM-824, or PM-HSC5 snow detector. They're available in three panel sizes: 50 Amps, 100 Amps, and 200 Amps. An additional 200-amp extension panel allows coverage for even larger systems. 120V, 208V, 240V, or 277V is supplied to the panel and a 24V Class 2 transformer allows connection to the snow detector. Each Contactor Pro panel is complete with "system on" indicator light, manual override by a 4-hr timer, simple 24V wire terminal connections to the snow detector, and outputs for connection to an extension panel. The CP-50 has one 50-amp contactor, the CP-100 has two 50-amp contactors, and the CP-200 has four 50-amp contactors. Systems should be designed to connect one or more ProMelt Cables or Mats in combinations not to exceed the capacity of individual 50-amp contactors. Each panel is NEMA Type 1 for mounting indoors on a wall, has knockouts for conduit, and measures 12" x 12" x 4".
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