products
General Purpose Thermocouples
Low cost industrial thermocouples and RTDs are availble in a variety of configurations an types. Types J, K, T, 2 wire, and 3 wire RTDs are standard. Other types are available. Marathon has a large inventory of stock thermocouples for immediate delivery.
Standard Thermocouples
All models shown available as TCs or RTDs
![]() |
Adjustable Depth Thermocouples with stainless steel armor available to fit standard bayonet probe or in metric sizes. |
![]() |
Adjustable Depth Thermocouples with stainless steel braid available to fit standard bayonet probe or in metric sizes. |
![]() ![]() ![]() |
Fixed Depth Thermocouples in straight, 45 degree, and 90 degree configurations. |
![]() |
Washer style thermocouples are great for surface mounting with just a screw.? Available in 3/16” and 5/16” diameters. |
![]() |
Hose clamp thermocouples are an easy way to measure pipe and cylinder temperatures. Available in 9 different sizes to fit 3/8” to 6-1/2” diameters. |
![]() |
Nissei nozzle thermocouples to fit 30, 40, and 50 mm diameter nozzles. 40mm diameter will also fit a 1.5” diameter nozzle. |
![]() |
Shallow nozzle thermocouples with 1/4-28 UNF thread. |
![]() |
Shim style thermocouples are great for inserting between 2 surfaces. Ideal to place between a band heater and the barrel. 1” x 3/4” pad size. |
![]() |
Newbury nozzle thermocouples are 1” long below the 90? bend and 1/8” diameter. |
![]() |
Bendable probe sensors are available in 1/8” and 3/16” diameters. 6” and 12” lengths are standard. 1/8” NPT compression fitting supplied. |



















