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The noble-metal thermocouple assemblies illustrated on this page are provided with double protection tubes. Outer protection tube choices of ceramic, metal alloys, or composite materials offer protection from a variety of high temperature process environments. All assemblies are provided with a ceramic inner tube. The inner tubes are cemented to the outer tube and are not replaceable, except for 18J assemblies. These assemblies are available with a variety of process mounting fittings and assembly options as listed below. Special construction designs are also available.
Unit of Measure

Specifications

Brands

 N/A Pyromation®

Shank Type

 N/A Tubes

Configuration Code

 N/A ID14

Thermocouple Type and Wire Gauge Size

 N/A B24R R24R R26R S24R S26R

Inner Material

 N/A 16A-12WH - Mullite 16A-16B(E) - Mullite 16A-16BH - Mullite 16B-41-75 - Mullite 16B-7-75 - Mullite 16BH-18J - Mullite 16BH-18JC - Mullite 17A-12WH - Alumina 17A-17B(E) - Alumina 17A-17BH - Alumina 17A-71W(E) - Alumina 17A-71WH - Alumina 17BH-18J - Alumina 17BH-18JC - Alumina 17X-71B(E) - Alumina 17X-71BH - Alumina

Outer Material

 N/A 16A-12WH - LT-1 16A-16B(E) - Mullite 16A-16BH - Mullite 16B-41-75 - HR-160® 16B-7-75 - Alloy 601 16BH-18J - Silicon Carbide 16BH-18JC - Silicon Carbide 17A-12WH - LT-1 17A-17B(E) - Alumina 17A-17BH - Alumina 17A-71W(E) - RSiC 17A-71WH - RSiC 17BH-18J - Silicon Carbide 17BH-18JC - Silicon Carbide 17X-71B(E) - RSiC 17X-71BH - RSiC

Outer Diameter

 N/A 16A-12WH - 7/8 in16A-16B(E) - 11/16 in16A-16BH - 11/16 in16B-41-75 - 1.050 in16B-7-75 - 1.050 in16BH-18J - 1(3/4) in16BH-18JC - 1(3/4) in17A-12WH - 7/8 in17A-17B(E) - 11/16 in17A-17BH - 11/16 in17A-71W(E) - 7/8 in17A-71WH - 7/8 in17BH-18J - 1(3/4) in17BH-18JC - 1(3/4) in17X-71B(E) - 11/16 in17X-71BH - 11/16 in

Thread Size

 N/A 16A-12WH - 1 in16A-16B(E) - 3/4 in16A-16BH - 3/4 in16B-41-75 - None in16B-7-75 - None in16BH-18J - None in16BH-18JC - None in17A-12WH - 1 in17A-17B(E) - 3/4 in17A-17BH - 3/4 in17A-71W(E) - 1 in17A-71WH - 1 in17BH-18J - None in17BH-18JC - None in17X-71B(E) - 3/4 in17X-71BH - 3/4 in

Fitting Type

 N/A 16A-12WH - Hex fitting 16A-16B(E) - Nipple (specify length) 16A-16BH - Hex fitting 16B-41-75 - None 16B-7-75 - None 16BH-18J - None 16BH-18JC - Support flange 17A-12WH - Hex fitting 17A-17B(E) - Nipple (specify length) 17A-17BH - Hex fitting 17A-71W(E) - Nipple (specify length) 17A-71WH - Hex fitting 17BH-18J - None 17BH-18JC - Support flange 17X-71B(E) - Nipple (specify length) 17X-71BH - Hex fitting

Tube Length

 N/A 12 in18 in24 in30 in36 in

Bushing Size

 N/A 6E(U) - 1 NPT Bushing 6F(U) - 1-1/4 NPT Bushing 6G(U) - 1-1/2 NPT Bushing 8E(U) - 1 NPT Bushing 8F(U) - 1-1/4 NPT Bushing 8G(U) - 1-1/2 NPT Bushing

Head Terminations

 N/A 31 - Aluminum screw-cover head 34 - Cast-Iron screw-cover head 49 - Flip-top aluminum head 91 - 316L SS screw-cover head

Assembly Options

 N/A 8 - 316SS nipple or hex tube fitting GS - Ground screw H - Adjustable steel mounting flange HT - Threaded floor flange on nipple I - Stainless tag NT - No mounting threads on pipe nipple SB - 1/2" NPT conduit reducer bushing

Note

Note

 N/A Welded bushings will be welded at maximum length possible when X and U dimensions are specified as the same length. Actual U dimension will be 1 to 2 inches shorter than specified depending on bushing size.

Substitute insertion length, in inches, measured from hot tip to bottom of bushing for (U) above. Insert NW in place of insertion length (U) for bushing supplied loose on tube.