Temp. sensor with measurement resistance - has ceramic disk with thin metallic coating as resistance layer, and plastic sheet conductor plate

摘要

A temp. sensor with a measurement resistance, consisting of a ceramic disc serving as a carrier, with a thin metallic coating as the resistance layer and contact surfaces and an insulating layer protecting the resistance layer. The contact surfaces are connected electrically conducting and mechanically secured with conductor paths insulated from each other of a conductor plate. The conductor plate is a plastic sheet (6), the length of which lies in the ratio of 2-60 to the length of the measurement resistance (3). The measurement resistance is arranged at one end of the plastic sheet, and at this end is enclosed by a protection tube (1) in the region of the resistance. At the end away from the resistance, the plastic sheet (6) with the conductor paths (4, 5) pass through the open end of the protection tube (7) and the conductor paths (4, 5) are provided with solder contacts. ADVANTAGE - Number of parts and working steps reduced to facilitate simple assembly. Substantially rationalised or automated mass prodn. facilitated with stage quality testing.