What are thermocouples? Thermocouples are temperature sensors that measure temperature by generating a small voltage signal proportional to the temperature difference between the junctions of two dissimilar metals. One junction (the hot junction) is typically encased in a sensor probe at the point of measurement; the other junction (the cold junction) is connected to the measuring instrument. The measurement instrument measures the voltage signal and the cold junction temperature then computes the temperature.

Precautions and considerations for using thermocouples:
Most measurement problems and errors with thermocouples are due to a lack of understanding of how thermocouples work. Listed below are some of the common problems. Connection problems: Many measurement errors are caused by unintentional thermocouple junctions. Remember that any junction of two different metals will cause a junction. If you need to increase the length of wires from your thermocouple, you must use the correct type of thermocouple extension wire. Using the wrong wire will introduce a thermocouple junction. Any connectors used must be made from the correct thermocouple material and correct polarity must be observed. Lead Resistance: To minimize thermal shunting and improve response time, thermocouples are made from thinner wire. Remember that thinner wire will cause high resistance which can make it sensitive to noise and can cause errors due to the input impedance of the measuring instrument. Using twisted thermocouple wires will help to reduced the noises. Thermocouple probes and assemblies: Make sure to select proper materials for each application and operating temperature. Remember when ordering thermocouple probes, that the thicker the sheath or insulated material the slower the respond time. Junction types : Make sure to select proper thermocouple junction type and sheath size to improve respond time. For more info.

Maximum probe length available 120" straight shipping length

T1-KM-D4-L12-304-GRT-GG Thermocouple probe sensor type K grounded with standard male plug and special limit of error wire c/w SS304 protection sheath, 12" Long, 1/4" O.D

T1-CKM-D4-L12-600-GRT-MI Thermocouple probe sensor type K grounded with standard male ceramic plug and special limit of error MgO mineral insulated c/w Inconel 600 protection sheath. 12" Long, 1/4" O.D.,

 

T1-JM-D4-L12-304-GRT-GG Rated up to 270°C at tip.

$20.00

T2-MJM-D4-L12-304-GRT-GG thermocouple probe sensor type J with mini flat pins male plug and SLE TC elements with SS304 protection sheath. 12" long, 3/16" O.D. & grounded

T2-MKM-D4-L12-304-GRT-GG with type K mini plug

$20.00

 

T3-KF-D4-L12-304-GRT-GG type K TC with standard female jack and SLE TC elements with SS304 protection sheath. 12" long and 1/4" O.D. & grounded,

T3-JF-D4-L12-304-GRT-GG

T3-TF-D4-L12-304-GRT-GG

$20.00

 

T4-MJF-D4-L12-304-GRT-GG type J sensor probe with mini flat pins female jack and SLE TC elements with SS304 protection sheath. 12" long, 3/16" O.D. and grounded.

T4-MKF-D4-L12-304-GRT-GG with type K mini female jack

$20.00

T5-JM-D4-L12-304-GRT-GG temperature probe type J with standard male plug and SLE TC elements with SS304 protection sheath supported by compression fitting. 12" long, 1/4" O.D. & grounded.

T5-KM-D4-L12-304-GRT-GG with type K plug

T5-MJM-D4-L12-304-GRT-GG with type J mini plug

T5-MKM-D4-L12-304-GRT-GG with type K mini plug

$25.00

 

T6-JF-D4-L12-304-GRT-GG temperature probe type J with standard female plug and SLE TC elements with SS304 protection sheath supported by compression fitting. 12" long, 1/4" O.D. & grounded.

T6-KF-D4-L12-304-GRT-GG with type K jack

T6-MJM-D4-L12-304-GRT-GG with type J mini jack

T6-MKM-D4-L12-304-GRT-GG with type K mini jack

$25.00

T7-HJM-D4-L12-304-GRT-GG sensor type J with heavy duty male plug and SLE TC elements with SS304 protection sheath supported by compression fitting. 12" long, 1/4" O.D. & grounded.

T7-HJF-D4-L12-304-GRT-GG with female J jack

T7-HKM-D4-L12-304-GRT-GG with K male plug

T7-HKF-D4-L12-304-GRT-GG with K female jack

$35.00

 

T7-HJM-D4-L12-304-GRT-GG-12SB type J with heavy duty male plug and SLE TC elements with SS304 protection sheath supported by compression fitting and brazed SS304 hex bushing. 12" long, 1/4" O.D. & grounded.

T7-HKM-D4-L12-304-GRT-GG-12SB with type K male plug

T7-HJF-D4-L12-304-GRT-GG-12SB with type J female plug

T7-HKF-D4-L12-304-GRT-GG-12SB with type K female plug

$45.00

T7-HJM-D4-L12-304-GRT-GG-12SSC2 1/4" O.D. by 12" long type J with heavy duty male plug and SLE TC elements with SS304 protection sheath supported by heavy duty 1/2" NPT compression fitting.

T7-HJM-D4-L12-304-GRT-GG-34SSC2 1/4" O.D. by 12" long type J with heavy duty male plug and SLE TC elements with SS304 protection sheath supported by heavy duty 3/4" NPT compression fitting.

 

 

$55.00

T7-HJM-D4-L12-304-GRT-GG-FL 1/4" O.D. by 12" long probe type J with heavy duty male plug and SLE TC elements with SS304 protection sheath supported by SS304 compression flange.

 

$85.00

Flange details

TM-JM-D4-L4-304-GRT-GG

On/Off Magnetic held down thermocouple designed for round or flat mounting surfaces. Spring loaded c/w sensor probe. For low temperature applications.

 
TM2-J-GD-3FTGG-SSB

Magnetic temperature sensor completed with 3ft. stainless steel braided cable. SLE type J TC cable and grounded. Fiberglass insulation wire

$45.00

TW-J-D4-L6-304-GRT-6FTGG-SSB

Stainless steel washer flange 1/8" thick x 1 1/8" O.D. with two mounting holes. 1/4" O.D. by 6" long probe with 6 feet of stainless steel overbraided cable. Grounded with fibreglass insulation. Available in type J, K, T,

$35.00

TA-K-D6-L6-304-UEXP-CER-6FTGG Type K probe sensor with 6 feet of fiberglass insulation SLE cable, 3/8" O.D. by 6" long SS304 protection sheath. Alumina ceramic insulation. Ungrounded exposed to air with notches opening. Designed for air measurement.

$35.00

 

T12L-K-D1-L12-316-GRT-MI-6FTGG

1/16" O.D. x 12" long thermocouple probe type K with transition type, mineral insulated to 6 ft fiberglass insulation wire with grounded junction, SS316 sheath.

T12L-K-D3-L12-316-GRT-MI-GG

3/16" O.D. by 12" long thermocouple probe type K mineral insulated, transition to 6ft of fibreglass cable and grounded type.

 

$35.00

T7-HJM-D4-L12-304-GRT-GG-18SSC1 type J with heavy duty male plug and SLE TC elements with SS304 protection sheath supported by compression fitting and 1/8" NPT adjustable compression fitting. 12" long, 1/4" O.D. & grounded.

$45.00

 

T9-K-D4-L12-304-GRT-GG Type K with alumina ceramic terminal block and SLE TC elements with SS304 protection sheath. 12" long, 1/4" O.D. & grounded. .

T9-K-D4-L12-304-GRT-MI

$40.00

 
T9-K-D4-L12-304-GRT-GG-12SB Type K with Alumina ceramic terminal block and SLE TC elements with SS304 protection sheath and brazed hex bushing. 12" long, 1/4" O.D. & grounded.

$45.00

T9-K-D4-L12-304-GRT-GG-18SSC1 Type K TC with Alumina ceramic terminal block and SLE TC elements with SS304 protection sheath and 1/8 npt SS316 compression fitting. 12" long, 1/4" O.D. & grounded.

T9-K-D4-L12-304-GRT-MI-18SSC1 Rated up to 800°C

$50.00

T10-K-D4-L12-304-GRT-GG-12N Replacement probe type K TC elements with fiberglass insulation and SS304 protection sheath, brazed to fitting. 12" long, 1/4" O.D. & grounded.

T10-K-D4-L12-316-GRT-MI-12N Replacement probe type K TC elements with mineral insulated and SS316 protection sheath, brazed to 12" long by 1/4" O.D., grounded.

Available in 3/4" x 3/4" NPT

 

$40.00

 

 

 

 

T11-J-D4-L12-304-GRT-1FTFEP Type J straight probe sensor with 1 feet of SLE teflon insulation cable and 12" long SS304 protection sheath and grounded.

T11-K-D4-L12-304-GRT-1FTGG with type K calibration,

$25.00

T12-J-D4-L12-304-GRT-6FTFEP Type J transition with 6 feet of SLE teflon insulation cable and 12" long SS304 protection sheath and spring. 12" long, 1/4" O.D. & grounded.

T12-K-D4-L12-304-GRT-6FTGG with type K calibration,

$38.00

T13-J-D4-L12-304-GRT-6FTFEP-18SSC1 Type J with 6 feet of SLE teflon insulated cable and 12" long, SS304 protection sheath c/w SS316 compression fitting. 12" long, 1/4" O.D., grounded.

T13-J-D4-L12-304-GRT-6FTFEP-18SSC1-SSB With Stainless braid over wire

T13-J-D4-L12-304-GRT-6FTFEP-18BRC With Brass compression fitting

T13-J-D4-L12-304-GRT-6FTFEP-18SSC1 -ARH With stainless steel flexible hose

 

$45.00

T14-HJF-D4-L12-304-GRT-6FTGG-ARH Type J with 6 feet stainless steel armor hose & SLE cable with female jack. 12" long, SS304 sheath, 1/4" O.D. & grounded. Fiberglass insulations

T14-HKF-D4-L12-304-GRT-6FTGG-ARH with type K calibration

$50.00

T16-EXT-HJM-6FTARH-304-6FTARH 6 feet of extension cable with heavy duty plug.

 

T16-EXT-HJMF-6FTGG-304-ARH TC type J and 6 feet of extension cable with heavy duty plug & jack.

$45.00

T15-J-D4-L12-304-GRT-6FTGG-ARH-14SB Type J TC with 6 feet stainless steel armor hose & SLE cable with SS304 1/4" NPT hex bushing brazed to 12" long 1/4" O.D tube & grounded, Fiberglass insulations,

T15-K-D4-L12-304-GRT-6FTGG-TARH-14SB with type K calibration

$55.00

 

T16-HJM-D1-L6-304-GRT-MI Flexible spring type J mineral insulated (MgO) transition & male plug, 6" long SS304 protection sheath (grounded). Special limit of error, 1/16" O.D.

T16-EXT-HJF-6FTARH-6FTGG-ARH with type J calibration and 6 feet of flexible SS304 armor hose

$45.00

T17-JM-L36-GRT-3FTGG with J male plug and 3 FT of fiberglass insulation wire.

T17-KM-L36-GRT-3FTGG with a K male plug and 3 FT of cable.

 

$25.00

T17-JJM-L36-GRT-3FTGG type JJ with 2 male plugs and stainless steel braid, bayonet adapter cap, 3 feet SLE TC wires & spring and fiberglass insulation.

$28.00

T18-J type J with stainless steel armour hose, bayonet adapter cap, 6 feet SLE TC wires with fiberglass insulation.

T18-J-6FTSSB with stainless steel braid

T18-K-6FTARH with K calibration

T18-K-6FTSSB with stainless steel braid

T18-JM-6FTARH with J male plug

T18-KM-6FTARH with K male plug

T18-KF-6FTARH with K female plug

$38.00

 

T19-J-6FTGG type J thermocouple, bayonet adapter cap, 6 feet SLE TC wires & spring loaded. 3/16" O.D. tip, fibreglass insulation.

T19-K with K calibration

T19-JM with J male plug

T19-KM with K male plug

T19-JFwith J female jack

T19-KF with K female jack

 

$20.00

 

T20-J-L3.5-GG 1/2-20 UNF 2A, 3.5" long meltbolt type J TC c/w ceramic terminal block and 1/8" O.D. tip by 1/4" long and fiberglass insulation.

 

 

 

T20-HJM-L3.5-GG with type J plug and grounded.

T20-HKM-L3.5-GG with K male plug and grounded junction.

 

 

T20-HJF-L3.5-GD-GG-ARH with J female jack and 6" flexible stainless steel armor hose. 1/8" O.D. tip by 1/4" long, grounded meltbolt TC.

 

 

T20-HJM-L3.5-GD-GG-ARH with male plug and 6" flexible stainless steel armor hose. 1/8" O.D. tip by 1/4" long, grounded meltbolt TC.

 

 

T20-CKM-L3.5-MI with J male ceramic plug and mineral insulation and grounded.

$60.00

 

 

TPC-K-6FTGG Pipe clamp type K thermocouple with 6 ft of special limit of error TC wire.

TPC-K-6FTFEP With Teflon insulated cable

TPC-K-6FTGG-SSB With stainless steel braided over fiberglass cable

TPC-KM-6FTGG Type K male TC connector plug.

$40.00

TD-JJ-L12-D4-URT-316-FEP Dual thermocouples type J ungrounded, SS316, 1/4" O.D. sheath 12" long probe.

$50.00

Simplex 2 WiresDuplex 4 WiresWire Calib.
JJJIron Constantan
KKKChromel Alumel
TTTCopper Constantan
Consult for other Calibrations
CodeSheath O.D.
D11/16"
D21/8"
D33/16"
D41/4"
D55/16"
D63/8"
D71/2"
Consult for other sizes
Code Probe Tube Length
L" L00 " Specify in inches
 
CodeTube Type
304Stainless Steel 304L
316Stainless Steel 316L
600Inconel 600
Consult for other type
CodeProbe Tip
GRTGrounded round tip
URTUngrounded round tip
GNTGrounded needle tip
UNTUngrounded needle tip
EXPExposed tip
GDGrounded
UGDUngrounded
 
CodeWire Insulation
GGFiberglass ~ 900°F
FEPFEP Teflon ~ 400°F
PFAPFA Teflon ~ 500°F
KAPKapton ~ 500°F
PVCPolyvinyl ~ 221°F
CERCeramic >815°C
MI

MgO, Mineral Insulated >815°C SS304, SS316

Alloy 600 >1050°C

 
Code for SS316 NPT Compression FittingsCode for Brass Compression NPT FittingsCode for SS316 NPT Hex Bushings
18SSC1=1/818BRC=1/818SB=1/8
14SSC1=1/414BRC=1/414SB=1/4
38SSC1=3/838BRC=3/838SB=3/8
12SSC1=1/212BRC=1/212SB=1/2
12SSC2=1/2FL=Compression Flange
34SSC2=3/4Fitting details click here
 
CodeWire Protection
3FTSSB3 feet stainless steel braid
6FTARH6 feet stainless steel armour hose
 
CodeNPT Stainless Steel Nipples
14N1/4" NPT
12N1/2" NPT
34N3/4" NPT
T1KMD4L12316GRTGG
Sample part number

TP-K-L12-D4-GNT-316-6FTFEP Industrial Penetration temperature sensor type K grounded, SS316 x 1/4" O.D. x 12" long, 6ft of telfon cable. c/w 1" O.D. teflon handle.

TP-K-L12-D4-UNT-316-6FTFEP Ungrounded

 

TP-K-L12-D4-GNT-316-6FTFEP-SSB with stainless steel Braid.

 

TP-K-L12-D4-GNT-316-6FTFEP-ARH with stainless steel flexible hose.

Rated up to 400°F.

$75.00

 
+/-Zoom Photo

T33 $25

Reg.$28

T36 $23

T34 $25

Reg.$28

T37 $23

 

Reg.$35

$34.00

 

$10.00

30, 24, 20 GA SLE Bare Solid wire

Bare wires insulated with Alumina Ceramic is used for high temperature applications. Special limit of error bare thermocouple wires with 99.5% purity Alumina ceramic insulator beads. Fish Spine, oval and straight Insulators. 6" long type J, K, T,

12" Long J, K, T $70.00 Pack of 10

SLC TC with 1/8" NPT hex brass cap. 1" spring loaded. 3/16" sensing tip c/w 3 feet stainless steel braided fiberglass insulations wire(SLE).

 

SM Shim type thermocouple with brass or stainless steel shim with stainless steel braided over 3 ft fibreglass cable and grounded.

 

SR TC with terminal ring c/w 3 ft stainless steel braided fibreglass cable and grounded.

 

FR-3FTSSB-GG-GD type thermocouple with flattened pipe terminal ring and 3 ft of stainless steel braided over fiberglass cable and grounded.

 

FR-3FTSSB-GG-UGD-MKM thermocouple with flattened pipe terminal ring and 3 ft of stainless steel braided over fiberglass cable and ungrounded with mini K type male plug.

 

From$10.00

 

 

T-GREASE

Silver thermal grease compound for heatsink (1.5g tube)

Color Silver


Silver Compounds 50%
Carbon Compounds: 30%
Metal Oxides: 20%
Thermal Conductivity >1,729 w/m-k at 25 degrees C
Thermal Resistance (Impedance) <0.120 degrees C-m2/w at25 degrees C
Operating Temp. -50 to 240 degrees C

$15.00
Tough design probe head dIICT6
Thermocouples

Thermocouple Sensors With Head

Thermocouple Accessories
Thermocouple Wire & MI_Cable
Temperature Transmitter
RTD Sensor Probes
Thermistor Probes
Temperature Controllers
Flexible Tubing
Heaters
Temperature & Humidity
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Heater Plugs & Accessories

Contact us for thermowell probe assemblies

Type of Thermowells available

Stepped
Straight
Tapered
Weld-in
VanStone
flanged
Socket Weld
Limited Space
Sanitary

On/Off Magnetic helddown thermocouple designed for laboratory used with moveable arm. Adjustable angle and probe level. Can be used for round or flat mounting surfaces.

TM-JM-D4-L6-316-GRT-GG-ARM

Without Magnet

T-JM-D4-L6-316-GRT-GG-ARM

Terms & Conditions Thermocouples manufacturer in Toronto, Ontario Canada