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The straight noble- and base-metal thermocouple assemblies, with Series 16 mullite and Series 17 alumina protection tubes, illustrated on this catalog page are those most commonly used in high temperature process heating applications. 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 ID13
Thermocouple Type and Wire Gauge Size1 N/A B24R Code K11C (Use only with 16C or 16W series tubes) Code K8R ( Use only with 16C or 16W series tubes) Code N14C (Use only with 16C or 16W series tubes) Code N8R ( Use only with 16C or 16W series tubes) Code R24R Code R26R Code S24R Code S26R

Tube Outer Diameter for Mullite Material

 N/A Code 16A(E) (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - 3/8 Code 16AF - 3/8 Code 16AH (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - 3/8 Code 16B(E) - 11/16 Code 16BF - 11/16 Code 16BH - 11/16 Code 16C(E) - 3/4 Code 16CH - 3/4 Code 16WH - 7/8 Code 17A E (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head. - 3/8 Code 17AF - 3/8 Code 17AH (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - 3/8 Code 17B( - 11/16 Code 17BF - 11/16 Code 17BH - 11/16

National Pipe Thread (NPT) Size For Alumina Material

 N/A Code 16A(E) (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - 1/2 Code 16AF - None Code 16AH (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - 1/2 Code 16B(E) - 3/4 Code 16BF - None Code 16BH - 3/4 Code 16C(E) - 3/4 Code 16CH - 3/4 Code 16WH - 1 Code 17A(E) ((All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - 1/2 Code 17AF - None Code 17AH (All assemblies with a 3/8" O.D. tube should be ordered with an aluminum termination head.) - 1/2 Code 17B(E) - 3/4 Code 17BF - None Code 17BH - 3/4

Process Mounting Fitting for Mullite And Alumina Tube Material

 N/A Code 16AE(All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - Steel pipe nipple (Specify "E" length) Code 16AF - 7/8 in. O.D. x 2 in. L open head fitting Steel hex fitting Code 16AH (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - Steel hex fitting Code 16B(E) - Steel pipe nipple (Specify "E" length) Code 16BF - 7/8" O.D. x 2" L open head fitting Code 16BH - Steel hex fitting Code 16C(E) - Steel pipe nipple (Specify "E" length) Code 16CH - Steel hex fitting Code 16WH - Steel hex fitting Code 17A (Steel pipe nipple (Specify "E" length) Code 17AF - 7/8 in. O.D. x 2 in. L open head fitting Steel hex fitting Code 17AH (All assemblies with a 3/8 in. O.D. tube should be ordered with an aluminum termination head.) - Steel hex fitting Code 17B( - Steel pipe nipple (Specify "E" length) Code 17BF - 7/8 in. O.D. x 2 in. L open head fitting Code 17BH - Steel hex fitting

Temperature of Mullite Tube Material

 N/A 1482 ºC2700 ºF

Temperature of Alumina Tube Material

 N/A 1871 ºC3400 ºF
Tube Length "X"2 N/A 12 in18 in24 in30 in36 in

Head Terminations

 N/A 31 - Aluminum screw-cover head Code 34 - Cast-Iron screw-cover head Code 49 - Flip-Top Aluminum Head Code 91 - 316L SS screw-cover head Code N - Open terminal head - R, S, B only

Assembly Options

 N/A Code 8 - 316SS nipple or hex tube fitting Code GS - Ground screw Code H - Adjustable steel mounting flange Code HT - Threaded floor flange on nipple Code I - Stainless tag Code NT - No process threads on pipe nipple SB - 1/2" NPT conduit reducer bushing
  • 1 8 ga. duplex elements only available in W series tubes. For duplex T/C's, use element type twice. Example: RR24R
  • 2 Specify other lengths in 1 inch increments.