Thermocouples Straight - Ceramic

Single and Double Tube Assemblies


Straight industrial process thermocouples with single metal or ceramic protection tubes are typically used to monitor temperatures during Heat Treating, Die Casting, Hot Dip Galvanizing, Waste Incineration, Cement Kilns and Glass Production.

Higher process temperatures up to 2700°F can be monitored by straight industrial thermocouples with Noble or Platinum thermocouple elements protected by ceramic tubes.


Ceramic protection tubes are available in mullite, Alumina and Zirconia. Silicon Carbide tubes are also in stock. Mountings can be threaded fittings, pipe sleeves or flanges.

Example: The part number describes the thermocouple giving the gauge, type of wire, construction, tube length and mounting device, if any. The part number 8K4-P11F-24 signifies an 8 gauge, Type K complete assembly, Mullite Tube 11/16 O.D. x 7/16" I.D., Fitting 3/4" NPT x 1/2" NPT, and a screw cover head. Nominal Length 24". Other combinations of thermocouples and tubes can be specified depending on your application.

! Note: If you would like to order a Type E, J, or N assembly, just substitute the “K” with an E, J, or N in the part numbers listed on this page.


Straight Thermocouple Configurations

Part Numbering System Examples

Easy To Order -

1 - State quantity.

2 - Specify the part number (ours or competitive).

3 - Specify the length *.

Multiples of 6" (152.4 mm) starting at 12" are considered stock.

4 - Add letters for mounting attachments, if any.

5 - For Double Element Assembly add "D" to the part number (14K4D-P11F-12)

To change the standard type K thermocouple calibration. Substitute the K in the part number with the desired Type E, J, K, N, or T, calibration.

Example: 8K4-P11F-12 = Type K Thermocouple

Thermocouple Assemblies with Ceramic Tubes

Straight Ceramic Tube Thermocouple
p16 Straight Ceramic 20171010-0
p17 Straight Ceramic 20171012-1
p17 Straight Ceramic 20171010-2
p19 Straight Ceramic 20171010-3
p19 Straight Ceramic 20171010-4
p19 Straight Ceramic 20171013-5
p21 Straight Ceramic 20171012-6
p21 Straight Ceramic 20171012-7
p21 Straight Ceramic 20171012-8
Straight Thermocouple Assemblies


  • Single Metal or Ceramic Protection Tube
  • Straight Construction
  • Standard Aluminum Screw Cover Head
  • Available With Large 8 Gauge Type K, E, J, or N Thermocouple Elements
  • Available With 24 Gauge Type R, S, or B Platinum Thermocouple Elements
  • All Specialty Alloys and Ceramics Available From Stock