Furnace Parts LLC designs resistance temperature devices in 2, 3 and 4 wire designs with up to 100 Ohm resistance. Leads include standard temperature, Teflon insulation, high temperature and fiberglass insulation. Termination heads include aluminum, cast iron, tube adapter with connector, terminal block and transmitter.

B & B Instruments, Inc. supplies standard and sanitary RTDs from manufacturers such as Reotemp, Amektek US Gauge, H.O. Trerice, and Weiss. Various types of RTDs include bimetallic, industrial glass, filled system, digital, and dual mode. Low range RTDs are built with Teflon insulated silver plated copper internal leads while high range RTDs are built with nickel internal leads. Case materials include stainless steel, cast aluminum, phenolic, and ABS. Case styles include stem and panel mounts while mounting styles include direct stem and remote capillary.

U.S. Sensor manufactures thin film platinum RTDs in various probe configurations for extreme environmental conditions. Features on their resistance temperature detectors include glass coated platinum, temperature range from -50°C to +500°C, and 100 to 1000 Ohms of resistance.

United Electric Controls Inc provides resistance temperature detectors in a wide temperature range from -196° to 482° C. Types of conductor includes platinum, nickel iron and copper. Temperature sheath materials include 304 stainless steel up to 875° C, 316 stainless steel up to 875° C, and Inconel 600 up to 1175° C.

Process Control Systems Inc supplies Maxigard thermocouples of J, K, T and E types and RTDs. The Maxigard CT2000A temperature alarm system consists of an individual temperature set point with audible alarm and LED indicator light. It features 120 VAC power, 5 amp relay contacts, din rail mounting, and terminal block. The Maxigard CT5000 temperature switch features terminal block connections, 5 amp relay contacts, AC or DC power, and din rail mounting.

Temperature Measurement Systems offer resistance temperature detectors in platinum, nickel, copper, high accuracy, and hard pack designs. Terminal heads are offered in styles including cast iron, cast aluminum, small cast aluminum, stainless steel, polypropylene screw cover, flip top terminal heads with hinged cover, explosion proof and canister type miniature aluminum terminal heads with ceramic terminal blocks.