Bayonet Type Thermocouples

Bayonet Fitting Type Thermocouples have a sheath with a permanently attached bayonet cap.
They connect to the process through a bayonet adapter, which is supplied separately.
Tip temperatures can be as high as 480ºC (900ºF) for fiberglass insulated wire,
250ºC (500ºF) for Teflon insulated wire.

Adjustable Length



See Order Chart for specifying different lengths (below).

Fixed Length



Order Chart - Compression Fitting and Bayonet Type Thermocouples


Fill in the appropriate numbers or letters to specify the probe of your choice

Bayonet Adaptors, Pipe Adaptors, Compression Fittings, and Thermocouple Wire

Bayonet Adaptors


L Thread Part Number
7/8" 1/8-27 NPT 1568-0001
7/8" 3/8/24 1568-0002
1 3/8" 1/8-27 NPT 1568-0003
1 3/8" 3/8/24 1568-0004
2 1/2" 1/8-27 NPT 1568-0005
2 1/2" 3/8/24 1568-0006
2 1/2" 14 x 1.5mm 1568-0016
2 3/8" 10 x 1.5mm 1568-0015

 

Pipe Adaptors


Part Number Fits Pipe Diameters Part Number Fits Pipe Diameters
1568-0007 1/2" to 7/8" 1568-0022 9 3/4" to 10 1/4"
1568-0008 7/8" to 1 1/2" 1568-0023 11 3/4" to 12 1/4"
1568-0009 1 5/16" to 21/4" 1568-0024 15 3/4" to 16 1/4"
1568-0011 2 1/4" to 3 5/16" 1568-0025 17 3/4" to 18 1/4"
1568-0012 3 5/8" to 4 1/4" 1568-0027 19 3/4" to 20 1/4"
1568-0013 4 5/16" to 5 1/4" 1568-0028 23 3/4" to 24 1/4"
1568-0020 6 1/4" to 6 3/4" 1568-0029 29 3/4" to 30 1/4"
1568-0021 7 3/4" to 8 1/4"

 

Compression Fittings


Tube O.D. Thread Size Material Part No.
1/8" 1/8-27 NPT Brass 144-0012
1/8" 1/8-27 NPT Stainless Steel 144-0020
3/16" 1/8-27 NPT Brass 144-0009
3/16" 1/8-27 NPT Stainless Steel 144-0022
1/4" 1/4-18 NPT Brass 144-0014
1/4" 1/8-27 NPT Stainless Steel 144-0024
.260~.275" 1/4-18 NPT Teflon 144-0037

Thermocouple Wire

Part No. Type Conductors Ga Conductor Insulation Overall Insulation Nominal Size Max. Temp.
761-0001 J 2 - stranded 20 Double glass braid Glass braid .068 x .130 800ºF
761-0002 J 2 - stranded 20 Double glass braid Glass braid & SSOB .100 x .162 800ºF
761-0003 J 2 - solid 24 Glass braid Glass braid .045 x .077 500ºF
761-0004 JX 2 - solid 16 PVC Weatherproof braid .110 x .179 250ºF
761-0005 JX 2 - solid 16 PVC PVC .122 x .193 250ºF
761-0006 J 2 - solid 30 Glass wrap Glass braid .032 x .051 250ºF
761-0008 J 2 - solid 24 Teflon Teflon .048 x .080 500ºF
761-0010 J 2 - solid 20 Teflon Teflon .100 x .162 500ºF
761-0013 J 2 - solid 20 Glass braid Glass braid .100 x .162 800ºF
761-0014 JX 2 - solid 16 Glass braid Epoxy glass braid .087 x .151 800ºF
761-0015 JX 2 - stranded 20 PVC PVC .110 x .179 250ºF
761-0016 J 2 - solid 30 Teflon Teflon .045 x .077 250ºF
761-0018 J 2 - stranded 20 Teflon Fused teflon .100 x .179 250ºF
761-0019 JX 3 - solid 20 PVC twisted PVC and Mylar shield .182 dia. 250ºF
761-0020 JS 2 - solid 20 Glass braid Glass braid .100 x .179 800ºF
761-0021 J 2 - stranded 24 Glass braid Glass braid .045 x .077 500ºF
761-0022 J 2 - stranded 24 Teflon Fused teflon .048 x .080 500ºF
 
771-0001 K 2 - solid 20 Glass braid Glass braid .068 x .130 800ºF
771-0002 K 2 - solid 24 Glass braid Glass braid .045 x .077 500ºF
771-0004 KX 2 - solid 16 PVC PVC .122 x .193 250ºF
771-0007 KX 2 - stranded 20 PVC PVC .110 x .179 250ºF
771-0008 K 2 - solid 30 Teflon Teflon .045 x .077 250ºF
771-0009 K 2 - stranded 20 Glass braid Glass braid & SSOB .100 x .162 800ºF
771-0010 K 2 - stranded 20 Glass braid Glass braid .068 x .130 800ºF
771-0011 K 2 - solid 30 Glass braid Glass wrap .032 x .051 250ºF
771-0012 KX 2 - solid 16 Glass braid Epoxy glass braid .087 x .151 800ºF
771-0014 KS 2 - solid 20 Glass braid Glass braid .068 x .130 800ºF
771-0015 KX 2 - solid 20 PVC PVC and Mylar shield .182 dia. 250ºF
771-0018 K 2 - stranded 20 Teflon Fused Teflon .100 x .179 500ºF
 
781-0001 T 2 - solid 20 Glass braid Glass braid .068 x .130 750ºF
781-0002 T 2 - solid 24 Glass braid Glass braid .045 x .077 500ºF
781-0003 TX 2 - solid 16 PVC PVC .122 x .193 250ºF
781-0005 T 2 - solid 20 Glass braid Glass braid & SSOB .100 x .162 750ºF
781-0006 TX 2 - stranded 20 PVC PVC .110 x .179 250ºF
781-0007 T 2 - solid 30 Teflon Teflon .045 x .077 250ºF
781-0008 T 2 - solid 24 Teflon Teflon .048 x .080 500ºF
781-0010 TS 2 - solid 20 Glass braid Glass braid .068 x .130 750ºF
781-0011 TX 2 - solid 20 PVC twisted PVC and Mylar shield .182 dia. 250ºF
781-0012 T 2 - stranded 20 Teflon Fused teflon 1.00 x .179 500ºF
 
801-0002 E 2 - solid 20 Glass braid Glass braid .068 x .130 800ºF
801-0004 EX 2 - solid 20 PVC PVC .110 x .179 250ºF
801-0005 E 2 - solid 30 Teflon Teflon .045 x .077 250ºF
801-0006 EX 2 - solid 20 Tefzel Tefzel .100 x .162 500ºF
801-0008 E 2 - stranded 20 Teflon Fused Teflon .100 x .162 500ºF
 
791-0002 Cu11 2 - solid 16 Glass braid Glass braid .087 x .151 800ºF
791-0003 Cu11 2 - solid 16 ServTex braid ServTex braid .174 x .250 1000ºF

Note: All wire is thermocouple grade unless marked 'X' for extension grade
or 'S' for Special Limits of Error grade. Copper 11 Alloy (Cu11) is used as extension wire
for thermocouple types R, S, C, and B.