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The straight base metal thermocouple assemblies illustrated on this page are those most commonly used in industrial process heating applications. All listed assemblies are provided with schedule 40 protection tubes, and are available with listed options. Heavier pipe schedule protection tubes and special construction designs are also available.
Unit of Measure

Specifications

Brands

 N/A Pyromation®

Configuration Code

 N/A ID05
Thermocouple Type and Wire Gauge Size1 N/A Code - J14C Code - J8C Code - K11C Code - K14C Code - K8C Code - N14C Code - N8C

Note For Duplex T/C Assemblies

 N/A For duplex assemblies use the T/C type code letter twice. Example: K8C - 7 - 75 becomes KK8C - 7 - 75

Protection Tube Material

 N/A Code 3 - Alloy 600 Code 41 - HR 160® Code 5 - 446 Stainless Steel (SS) Code 6 - Carbon Steel Code 7 - Alloy 601 Code 8 - 316 Stainless Steel (SS)

National Pipe Thread (National Pipe Thread (NPT)) Size for Carbon Steel Material

 N/A Code 1 - 100 inCode 1/2 - 50 inCode 1/4 - 25 inCode 3/4 - 75 in

National Pipe Thread (National Pipe Thread (NPT)) Size for 316 Stainless Steel (SS) Material

 N/A Code 1 - 100 inCode 1/2 - 50 inCode 1/4 - 25 inCode 3/4 - 75 in

National Pipe Thread (National Pipe Thread (NPT)) Size for 446 Stainless Steel (SS) Material

 N/A Code 1 - 100 inCode 1/2 - 50 inCode 3/4 - 75 in

National Pipe Thread (National Pipe Thread (NPT)) Size for Alloy 600 Material

 N/A Code 1/2 - 50 inCode 3/4 - 75 in

National Pipe Thread (National Pipe Thread (NPT)) Size for Alloy 601 Material

 N/A Code 1 - 100 inCode 1/2 - 50 inCode 3/4 - 75 in

National Pipe Thread (National Pipe Thread (NPT)) Size for HR 160® Material

 N/A Code 1 - 100 Code 1/2 - 50 Code 3/4 - 75

Tube Length

 N/A 12 18 24 30 36

Note for Tube Length "X"

 N/A Specify other lengths in 1" increments up to 240". Consult factory for lengths above 20

Optional Welded Bushing Material

 N/A 316 Stainless Steel Steel
Optional Welded Bushing Size2 N/A Code 6C(U) - 1/2 National Pipe Thread (NPT) Bushing (25 tubes only) Code 6D(U) - 3/4 National Pipe Thread (NPT) Bushing (25 and 50 tubes only) Code 6E(U) - 1 National Pipe Thread (NPT) Bushing (25, 50 and 75 tubes only) Code 6F(U) - 1(1/4) National Pipe Thread (NPT) Bushing Code 6G(U) - 1(1/2) National Pipe Thread (NPT) Bushing Code 8C(U) - 1/2 National Pipe Thread (NPT) Bushing (25 tubes only) Code 8D(U) - 3/4 National Pipe Thread (NPT) Bushing (25 and 50 tubes only) Code 8E(U) - 1 National Pipe Thread (NPT) Bushing (25, 50 and 75 tubes only) Code 8F(U) - 1(1/4) National Pipe Thread (NPT) Bushing Code 8G(U) - 1(1/2) National Pipe Thread (NPT) Bushing

Optional Union and Nipple Head Connection Material

 N/A 316 Stainless Steel Steel

Optional Union and Nipple Head Connection

 N/A Code 6PU(E) (Insert extension length, in inches, for (E) above) - Union-nipple supplied as material specified Code 8PU(E) (Insert extension length, in inches, for (E) above.) - Union-nipple supplied as material specified

Head Terminations

 N/A Code 31 - Aluminum Screw-Cover Head Code 34 - Cast-Iron screw-cover head Code 49 - Flip-Top Aluminum Head Code 91 (Not available with 1" National Pipe Thread (NPT) protection tubes.) - 316L Stainless Steel (SS) screw-cover head Code 93 (Not available with 1" National Pipe Thread (NPT) protection tubes.) - Aluminum explosion-proof/flame-proof head, NEC, IEC, Atex approved Code 94 (Not available with 1" National Pipe Thread (NPT) protection tubes.) - 316L stainless steel explosion-proof/flame-proof head, NEC, IEC, Atex approved

Assembly Options

 N/A Code 6Y - Steel temperature check fitting Code GS - Ground screw Code H - Adjustable steel mounting flange Code I - Stainless tag Code L - Insulated hot junction Code SB - 1/2" National Pipe Thread (NPT) conduit reducer bushing

Note

Note

 N/A Duplex 8, 11, and 14 ga. Assemblies require a minimum 1/2" National Pipe Thread (NPT) protection tube size (size codes 50 and larger).

8 gauge duplex thermocouple elements supplied in 1/2" National Pipe Thread (NPT) protection tubes will be supplied with round insulators.

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.
  • 1 Thermocouples of 8 ga. wire require minimum of 1/2" NPT tube
  • 2 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.