Madison Co. offers resistance temperature detectors, including industrial 100 OHM probes (rigid mount), closed-tip probes, and their Madison-Omni RTDs, with a platinum probe and stainless steel (316) sheath, an analog 4-20 mA output signal with supply voltage of 10-30 VDC. This probe also has an electrical connection with an M12x1 thread, a process connection with a G 1/2 or 1/2" NPT thread, meeting IP67 standards.

Omega Engineering Inc. offers RTD probes, elements, and assemblies, including sanitary sensors, such as their PRS-M12 series RTD sensors, 3-A spprived with an M-12 connector, for hygienic, clean-in-plae, and sanitary applications with a 4-pin connector and 1.5" 16 AMP tri-grip fitting, in prove lengths of 3", 4", 5" or 6", with a temperature range from -50 to 200C and is compatible with 3-wire and 2-wire RTD instruments and transmitters.

Sensing Devices, Inc. offers high accuracy resistance temperature detectors for precision measurement, as well as thin film products, platinum wirewound elements, and custom probe sub-assemblies. Additionally, they also offer calibration services, such as NIST traceable services, for metrology equipment, and fixed standard reference resistors.

DeviceTech sells Hayashi Denko high tech temperature detectors, thin film platinum models with three resistance values of 100, 500, or 1000 OHM and is made to meet DIN, IEC, and JIS standards with temperature ranges from -50C to 650C and a temperature coefficient 0.003851. These RTDs use ceramic surface for greater resistance to shock and vibration.

Temperature Specialists offers thin film platinum RTDs, wire wound platinum RTDs, connector style assemblies, transition style assemblies, bayonet assemblies, and sheath style assemblies. Their platinum resistance temperature detectors use temperature coefficients of 0.00391 OHM. They also offer industrial assemblies and hollow elements, and process control sensors.

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.