Thermocouples
K-Type Surface Thermocouple
K-type surface thermocouple with adhesive pad for flat surfaces.
From $12.00
Thermocouples for fast response and high-temperature measurement
Thermocouples generate a small voltage when two dissimilar metals meet at a measuring junction. They are rugged, fast-responding and suitable for much higher temperatures than most RTDs, which makes them the standard choice for kilns, furnaces, ovens, exhaust systems and plastics processing.
Our range includes Type K, J, T and E thermocouples in several constructions: surface and washer probes for flat surfaces, stainless-steel probe assemblies, bendable armored probes, screw-in and spring-loaded sensors, and thermocouple wire for OEM assembly. Sheath materials include stainless steel, Inconel 600 and ceramic insulators, with standard or custom lengths.
Choosing the right thermocouple
- Type: Type K is the general-purpose choice; Type J is common in older industrial equipment; Type T suits low-temperature and cryogenic work; Type E offers a higher output.
- Junction: grounded for fast response, ungrounded for electrical isolation, exposed for the fastest response in clean environments.
- Construction: surface lug, threaded probe, armored probe, spring-loaded screw-in or bare wire.
- Process connection: M6, M8, M12, G1/4, G1/2, NPT or custom.
- Lead: 0.5–3 m standard, with PTFE, fiberglass or silicone insulation and optional connectors.
Typical applications
Kilns and heat-treatment furnaces, industrial ovens, plastics extruders, packaging machines, engine and exhaust testing, HVAC equipment, food processing and laboratory furnaces.
Quality and ordering
Sensors are manufactured in our ISO 9001 factory and can be supplied with calibration certificates and material traceability. Stock items ship within 48 hours; custom lengths, threads, junctions and connectors are quoted on request. Send us the temperature range, atmosphere, thread and lead length, and we will recommend the right type and construction.