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.

Minco makes RTD sensor probes which are mineral insulated to 650C, with single and dual elements. Types include tip sensitive RTDs, electrically isolated RTDs, bayonet mount tip sensitive type, fast response types, and 550C RTD types. Their fast response RTDs are encased in stainless steel with a copper alloy tip, with a max case length of 48", and can withstand 10 to 2000Hz at 20Gs minimum vibration.

Ultra Electronics offers several types of resistance temperature detectors, including spring loaded types, explosion proof models, 1/2" NPT hex nipple models, direct immersion sanitary models, non-intrusive flow through sanitary sensors, autoclave temp sensors, embedded temp sensors, spring loaded bayonet fitting sensors, and more for applications including furnaces, plastics processing, textile production, medical research, and others.

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.

Nanmac offers Resistance Temperature Detectors, with conduit heads or plugs and leads. They also offer RTD cable assemblies. Their standard probe has a 100 OHM platinum element with alpha of 0.00385, sheath made of 304SS, and a 3/16" or 1/4" diameter and a length of five inches. This probe typically comes with a three pronged plug when ordered with a plug, and those with a lead wire can be in two or three conductor type. This RTD is also available with a stainless steel overbraid.