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Abstract

Electric Heating Units of All Types and Parts Therefor-Namely, Cartridge Heaters, Band Heaters, Cast-In Heaters, Strip Heaters, Ceramic Fiber Heaters, Immersion Heaters, Tubular Heaters, Drum Heaters, Flexible Heaters, Radiant Panels, Duct Heaters, Silicone Rubber Heaters, and Neoprene Rubber Heaters; Temperature Sensors, Thermocouples, Thermistors, Resistance Temperature Detector (RTD) Sensors, Mercury Displacement Relays, and Electronic Controls for Controlling Temperature Pressure, Humidity, and Other Conditions