Thermocouple Design Guide
Custom Thermocouple Design Guide. ThermX is a manufacturer of custom thermocouple probes used for applications in analytical test equipment, heating & cooling systems, aerospace, automotive, transportation, medical, pharmaceutical, chemical processing, food processing, semiconductor processing, power generation, and fabrication machinery.
Use our custom thermocouple design guide as a starting point for your probe. Available thermocouple types J, K, T, E, R, S, B and C. Temperature ranges from -200 °C to 2315 °C (-328 °F to 4200 °F) depending on probe type and configuration. Available in diameters ranging from 0.020" to 0.500" with grounded or ungrounded junctions, a wide selection mineral insulated sheath material, and wire insulation materials ranging in temperature from -200 °C to 1200 °C (-328 °F to 2200 °F).
We offer custom designs for monitoring surface temp, air temp and direct immersion liquid temp with a variety of probe types and housings. Housing options include closed end tubes, flanged tubes, ring lug/terminal, flag terminal, hex fitting, threaded hex screw, aluminum block, air flow birdcage and transition probes. Special limits of error thermocouple material available.
For higher temperature industrial applications, we offer mineral insulated probes which are more robust and can be shaped and formed to suit an application. These sensors are available in longer lengths than the traditional tube and wire thermocouple design. Available sizes include 1/16", 1/8", 3/16" and 1/4", 5/16", 3/8" and 1/2" diameter sheath material. Available mineral insulated sheath materials are 316 SS, 310 SS, Inconel® 600, Hastelloy® C, Hastelloy® X, Haynes® HR-160 and Pyrosil® D.
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Style "WB" Beaded Wire Thermocouple
- Ideal for UL testing, oven mapping, & thermal profiling
- Teflon® cap and cover available for acid & plating tanks monitoring
- 40 AWG, 36 AWG, 30 AWG, 24 AWG, 20 AWG wires
- Special Limits Accuracy wire available
Style "SO" Stick-On Thermocouple
- Ideal for surface measurement on flat or curved surfaces
- Fast response time
- Low thermal mass
- Silicone Adhesive Rated to 500 °F
Style "1COCA" Cement-On Thermocouple
- Ideal for surface measurement on flat or curved surfaces
- Fast response time, Low thermal mass
- 0.0005" thick foil wire is laminated in a fiberglass reinforced Kapton® polymer
Style "WT" Washer Thermocouple
- Ideal to measure surface temperatures up to 900°F
- #6 & #8 washers use 24 AWG wire
- #10 & 1/4" washers use 20 AWG wire
Style "HW" Heavy Duty Ring Lug Thermocouple
- Ideal to measure surface temperatures up to 900°F
Style "HB" Hex Bolt Thermocouple
- Ideal to measure surface temperatures up to 900°F
- Available with 8-32, 10-32, 1/4 -20 hex screw
- Customs available upon request
Style "CI" Ceramic Insulator Wire Thermocouple
- Low-Cost Rigid Ceramic Insulator
- Available with Teflon® & fiberglass leads with stainless steel overbraid
Style "TU" Tube & Wire Thermocouple
- Ideal for general applications for air and liquid
- Teflon® probe cover available for protection in corrosive environments
- Angle probes available
Style "HFT" Tube and Wire Hex Fitting Thermocouple
- Low Cost Ridget SS Tube with Brazed or Welded Hex Fitting
- Available with Teflon® & fiberglass leads with stainless steel overbraid
PCR Well Plate Thermocouple
- Ideal for PCR Maping and Verification
- 30 AWG & 36 AWG PFA Teflon, type "T" or "K" Thermocouple Wire
Style "VT" Validation Thermocouple
- Ideal for deep freezers, incubators, steam sterilizer,depyrogenation tunnels, & dry ovens
- 22 AWG & 28 AWG stranded type "T"
- FEP Teflon® (200°C) ±0.3°C at 121°C
- Kapton® (300°C) (±0.5°C or ±0.4% of reading)
Style "VP" Tube and Wire Validation Thermocouple
- Ideal for -80 °C Deep freezers, incubators, steam sterilizer, depyrogenation tunnels, & dry ovens
- 22 AWG & 28 AWG stranded type "T"
- FEP Teflon® (200°C) ±0.3°C at 121°C
- Kapton (300 °C) (°0.5 °C or 0.4% of Reading
Style "AP" Validation Air Probe Thermocouple
- Ideal cold storage rooms ovens to 200 °C
- 22 AWG stranded type "T"
- FEP Teflon® (200°C) ±0.3°C at 121°C
Style "ABT" Aluminum Block Wire Thermocouple
- Ideal for measuring surface temperatures
- PFA Teflon Lead wire rated to 500 °F
Style "OP" Oven Profiling Thermocouple
- Ideal for profiling high temperature belt & push ovens to 2200°F
- High temperature ceramic fiber with Inconel 600 overbraid on a 20 AWG solid
- Type "K" thermocouple wire
Style "AC" Autoclave Thermocouple
- Ready to use
- Ideal for composite repair & fabrication
- Special limits of error type "J" wire with a molded connector
- Certification to BAC 5621
Style "FT" Flanged Tube and Wire Thermocouple
- Low Cost Ridget SS Tube with Flange
- Ideal fo duct mount air temperatures
Style "AL" Alligator Clip Thermocouple
- Ideal for residential or commercial oven temperature measurement
Style "PO" Pointed Tip Plug and Jack Thermocouple
- Ideal for measuring food temperature
- Reduced pointed tip for quick response, rated to 500°F
Style "FE" Flexible Extenstion
- Quick Disconnect Extensions
- Available with Teflon® & fiberglass leads with stainless steel overbraid
Style "TS" Spring Bayonet Thermocouple
- Ideal for injection molding & composite industries
Style "TB" Fixed Bayonet Thermocouple
- Ideal for injection molding & composite industries
Style "TF" Adjustable Flex Armor Bayonet Thermocouple
- Ideal for use in plastics & composite industry
Style "TW" Custom Thermowells
- Custom built straight wells, tapered wells, step down, flanged, & weld-in thermowells
- Mmaterials available: 316 SS, 310 SS, Hastelloy C, Monel, etc...
- Standard bore is 0.260" & 0.385" (others available upon request)
Multipoint Thermocouple
- Ideal for chemical reactors, fractionation towers, & fluidized bed catalyst
- Specify up to 19 individual points depending on OD cable
- Temperature ranges to 2100°F
- Lengths up to 100 feet long
Style "MW" Cut & Strip Minerial Insulated Thermocouple
- Cold end stripped & epoxy sealed to inhibit moisture absorption
- Available from 0.020" to 0.375" OD sheath
- 0.020" - 0.062" available with Ungrounded Junction up to 500 ft. long
- Available in 316 SS, 310 SS and Inconel 600
Style "MP" Plug and Jack Mineral Insulated Thermocouple
- Cold end stripped & epoxy sealed to inhibit moisture absorption
- Available from 0.020" to 0.375" OD sheath
- 0.020" - 0.062" available with Ungrounded Junction up to 1000 ft. long
- Available in 316 SS, 310 SS and Inconel 600
Style "MP" Half-Shield Plug & Jack Mineral Insulated Thermocouple
- Cold end stripped & epoxy sealed to inhibit moisture absorption
- Available from 0.020" to 0.375" OD sheath
- 0.020" - 0.062" available with Ungrounded Junction up to 1000 ft. long
- Available in 316 SS, 310 SS and Inconel 600
Style "MTT" Miniature Transition Mineral Insulated Thermocouple
- Smalll space thermocouple
- 0.020" to 0.062" OD sheath
- Small 1/8" diameter Transition
Style "MT" Mineral Insulated Transition Thermocouple
- 0.020" to 0.375" OD sheath
- Single or Duplex
- Spring strain relief
- Available in 316 SS, 310 SS and, Inconel 600 ( other options available)
Style "MT" Mineral Insulated Half-Shield Transition Thermocouple
- Quick response in hot exhaust streams in aerospace & dyno testing
- Transition epoxies rated to 500°F standard (600°F upon request)
- Also available with Hi-Temp cement (1200°F)
- 0.063" to 0.375" OD sheath
Style "MI" Industrial Mineral Insulated Thermocouple
- Rated to 2200°F
- Fixed and Spring-loaded stainless steel hex fittings
- Several head styles to choose from with in-head transmitters available
Style "MR" Replacement Industrial Mineral Insulated Thermocouple
- Fixed & spring-loaded stainless steel hex fittings
- 0.062" to 0.500" OD sheath
- Single or duplex with metal sheaths
Style "IT" Metal Protection Tube Pipewell Thermocouple
- Available in 1/2" NPT & 3/4" NPT pipewells
- Multiple head styles available
- Pipe schedule 40 or 80
- Wide selection of metal protection tube available
Style "RT" Replacement Mineral Insulated Thermocouple
- Self-gripping spring
- Ceramic terminal block style
- Available in 3/16", 1/4", & 3/'8" diameter sheath material
Style "SS" Size on Size Mineral Insulated Transition Thermocouple
- Size on size transition for easy installation of compression fitting from cold end
- Transition epoxies rated to 500°F standard (600°F upon request)
- Available in lengths up to 200 feet with grounded junction in 24" coils
Style "WP" Weld Pad (Tube Skin) Mineral Insulated Thermocouple
- Size on size transition for easy installation of compression fitting from cold end
- Transition epoxies rated to 500°F standard (600°F upon request)
- Available in lengths up to 200 feet with grounded junction in 24" coils
Style "NR" Platinum Replacement Thermocouple
- High temperature to 3000°F
- Available in R, S & B
- Available with high purity alumina ceramic insulators
- NIST Calibration Available
Style "NM" Platinum Metal Protection Tube Thermocouple
- Ideal for high temperature ovens up to 3000°F
- Thermocouple type R, S, & B
- Available with: Inconel 600, Molybdenum, or Platinum-Rhodium protection tubes
- NIST traceable calibration available
Style "TM" Tungsten-Rhenium Metal Protection Tube Thermocouple
- Ideal for high temperature ovens up to 4000°F
- For use in vacuum only
- Thermocouple type C
- Available with Molybdenum protection tubes
- NIST traceable calibration available
Style "NE" Platinum Exposed Junction Thermocouple
- Ideal for high temperature ovens to 3000°F
- Available In: R & S
- 'B' Available in ±1.0% Only
Style "NC" Platinum Ceramic Protection Thermocouple
- Ideal for high temperature ovens to 3000°F
- Available In: R, S & B
- Available with high purity alumina ceramic insulators
Style "BT" Ceramic Insulated Kiln Furnace Thermocouple
- Available in 8 & 14 AWG
- Oval or round ceramic insulators
- TIG welded junctions
- Temperature rated to 2200°F
Style "CT" Ceramic Protection Tube Thermocouple
- Available in: K, R, S & B
- High temperatures to 3200°F
- Alumina (3000°F - 3200°F)
- Mulite (2700°F - 2800°F)
- Silicon Carbide (2800°F - 3000°F)
