Power Plant Services Orders Box Furnace
The box-furnace frame is manufactured with heavy-gauge sheet steel reinforced and welded to form a rigid unit with a heavy-gauge front face plate designed to withstand warping and distortion from the chamber heat. A rear-mounted type-K thermocouple assembly is located through the rear wall of the chamber for rapid sensing of the chamber heat. The chamber of the unit is fitted with a ceramic hearth plate to support a workload of 25 pounds per square foot of hearth area. A digital time-proportioning temperature controller and all other instrumentation are mounted in a separate control panel on the side of the furnace away from the heat and loading of the chamber.