What is a thermocouple? A thermocouple is a temperature sensor 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 accuracy. For more info.

T1-KM-D4-L12-316-GRT-GG Thermocouple probe sensor type K grounded with standard male plug and special limit of error wire and SS316 protection sheath. 12" Long, 1/4" O.D.

T1-JM-D4-L12-316-GRT-GG

Reg.

$25

$20

T2-MJM-D4-L12-316-GRT-GG thermocouple probe sensor type J with mini flat pins male plug and SLE TC elements with SS316 protection sheath. 12" long, 3/16" O.D. & grounded

T2-MKM-D4-L12-316-GRT-GG with type K mini plug

Reg.

$25

$20

 

T3-KF-D4-L12-316-GRT-GG type K TC with standard female jack and SLE TC elements with SS316 protection sheath. 12" long and 1/4" O.D. & grounded

T3-JF-D4-L12-316-GRT-GG

T3-TF-D4-L12-316-GRT-GG

Reg.

$25

$20

 

T4-MJF-D4-L12-316-GRT-GG type J sensor probe with mini flat pins female jack and SLE TC elements with SS316 protection sheath. 12" long, 3/16" O.D. and grounded.

T4-MKF-D4-L12-316-GRT-GG with type K mini female jack

Reg.

$25

$20

T5-JM-D4-L12-316-GRT-GG temperature probe type J with standard male plug and SLE TC elements with SS316 protection sheath supported by compression fitting. 12" long, 1/4" O.D. & grounded.

T5-KM-D4-L12-316-GRT-GG with type K plug

T5-MJM-D4-L12-316-GRT-GG with type J mini plug

T5-MKM-D4-L12-316-GRT-GG with type K mini plug

Reg.

$30

$25

 

T6-JF-D4-L12-316-GRT-GG temperature probe type J with standard female plug and SLE TC elements with SS316 protection sheath supported by compression fitting. 12" long, 1/4" O.D. & grounded.

T6-KF-D4-L12-316-GRT-GG with type K jack

T6-MJM-D4-L12-316-GRT-GG with type J mini jack

T6-MKM-D4-L12-316-GRT-GG with type K mini jack

Reg.

$30

$25

T7-HJM-D4-L12-316-GRT-GG sensor type J with heavy duty male plug and SLE TC elements with SS316 protection sheath supported by compression fitting. 12" long, 1/4" O.D. & grounded.

T7-HJF-D4-L12-316-GRT-GG with female J jack

T7-HKM-D4-L12-316-GRT-GG with K male plug

T7-HKF-D4-L12-316-GRT-GG with K female jack

Reg.

$40

$30

 

T7-HJM-D4-L12-316-GRT-GG-12SB type J with heavy duty male plug and SLE TC elements with SS316 protection sheath supported by compression fitting and brazed SS316 hex bushing. 12" long, 1/4" O.D. & grounded.

T7-HKM-D4-L12-316-GRT-GG-12SB with type K male plug

T7-HJF-D4-L12-316-GRT-GG-12SB with type J female plug

T7-HKF-D4-L12-316-GRT-GG-12SB with type K female plug

Reg.

$55

$48

T7-HJM-D4-L12-316-GRT-GG-12SSC2 1/4" O.D. by 12" long type J with heavy duty male plug and SLE TC elements with SS316 protection sheath supported by heavy duty compression fitting.

Reg.

$65

$55

T7-HJM-D4-L12-316-GRT-GG-FL 1/4" O.D. by 12" long probe type J with heavy duty male plug and SLE TC elements with SS316 protection sheath supported by SS316 compression flange.

Reg.

$95

$85

T7-HJM-D4-L12-316-GRT-GG-18SSC1 type J with heavy duty male plug and SLE TC elements with SS316 protection sheath supported by compression fitting and 1/8" NPT adjustable compression fitting. 12" long, 1/4" O.D. & grounded.

Reg.

$65

$50

 
T9-K-D4-L12-316-GRT-GG Type K with spring loaded Alumina ceramic terminal block and SLE TC elements with SS316 protection sheath. 12" long, 1/4" O.D. & grounded.

Reg.

$40

$30

 
T9-K-D4-L12-316-GRT-GG-12SB Type K with spring loaded Alumina ceramic terminal block and SLE TC elements with SS316 protection sheath and brazed hex bushing. 12" long, 1/4" O.D. & grounded.

Reg.

$65

$50

T9-K-D4-L12-316-GRT-GG-18SSC1 Type Kwith spring loaded Alumina ceramic terminal block and SLE TC elements with SS316 protection sheath and SS316 compression fitting. 12" long, 1/4" O.D. & grounded.

Reg.

$65

$38

T10-K-D4-L12-316-GRT-GG-12N Replacement probe with type K TC elements with SS316 protection sheath brazed. 12" long, 1/4" O.D. & grounded.

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

$30

Reg.

$49

$30

 

T11-J-D4-L12-316-GRT-GG Type J straight probe sensor with 1 feet of SLE cable and 12" long SS316 protection sheath.

T11-K-D4-L12-316-GRT-GG with type K calibration

Reg.

$25

$20

T12-J-D4-L12-316-GRT-GG Type J transition with 6 feet of SLE cable and 12" long SS316 protection sheath and spring. 12" long, 1/4" O.D. & grounded.

T12-K-D4-L12-316-GRT-GG with type K calibration

Reg.

$45

$38

T13-J-D4-L12-316-GRT-GG-18SSC1 Type J with 6 feet of SLE cable and 12" long SS316 protection sheath and spring and compression SS316 fitting. 12" long, 1/4" O.D. & grounded.

Reg.

$48

$38

T14-HJF-D4-L12-316-GRT-GG-6FTARH Type J with 6 feet stainless steel armor hose & SLE cable with female jack. 12" long, 1/4" O.D. & grounded.

T14-HKF-D4-L12-316-GRT-GG-6FTARH with type K calibration

Reg.

$75

$58

T15-J-D4-L12-316-GRT-GG-6FTARH-14SB Type J with 6 feet stainless steel armor hose & SLE cable with SS316 hex bushing, 12" long, 1/4" O.D. & grounded.

T15-K-D4-L12-316-GRT-GG-6FTARH-14SB with type K calibration

Reg.

$55

$45

 

T16-HJM-D1-L4-304-GRT-GG Flexible spring type J mineral insulated (MgO) transition & male plug, 6" SS316 protection sheath (grounded). Special limit of error. 1/16" O.D.

T16-EXT-HJF-6FTARH-304-GG-6FTARH with type J calibration and 6 feet of flexible SS304 armor hose.

$55

 

Reg.

$75

 

$35

T17-JJM-L36-GRT-GG type J with 2 male plugs and stainless steel braid, adapter cap, 3 feet SLE TC wires & spring.

Reg.

$30

$25

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

T18-K-6FTARH with K calibration

T18-T-6FTARH with T calibration

T18-JM-6FTARH with J male plug

T18-KM-6FTARH with K male plug

T18-KF-6FTARH with K female plug

$35

 

Reg.

$45

 

$35

T19-J type J, Adapter Cap, 6 feet SLE TC wires & spring. Fiberglass Insulation

T19-K with K calibration

T19-JM with J male plug

T19-KM with K male plug

$20

 

 

 

$23

T20-J-L3.5-18TIP 1/2-20 UNF 2A, 3.5" long Meltbolt type J TC c/w ceramic terminal block and 1/8" O.D. TIP, 1/4" long. Special limit of error.

T20-K-L3.5-18TIP with K calibration

T20-HJM-L3.5-18TIP with J male plug

T20-HKM-L3.5-18TIP with K male plug

T20-6FTARH-JM-L3.5-18TIP with 6 ft of stainless steel armour hose and type J male plug

Reg.

$68

$50

$50

$50

$50

$55

T21-HJF-L3.5-6FTARH-18TIP SS316 3.5" long melt bolt, 1/2-20 UNF 2A thread, type J with 6 feet of stainless steel armor hose and heavy duty female jack with locking clip. 1/8" O.D. tip by 1/4" long. Special limit of error.

T21-HJM-L3.5-6FTARH-18TIP with type J heavy duty male plug

T21-HKF-L3.5-6FTARH-18TIP with type K heavy duty female jack

T21-HKM-L3.5-6FTARH-18TIP with type heavy duty K male plug

T21-KM-L3.5-6FTARH-18TIP with standard K male plug

$75

 

Reg.

$95

 

 

$75

T22-K-L2-TEF Pipe clamp type K sensor with 2" long, 3/16" O.D. SS316 sheath c/w spring loaded cap and stainless steel adjustable strap with 5 feet of cable (Brown wire insulation). Special limit of error

Reg.

$45

$38

TD-J-L12-D4-GRT-316 Dual TC type J Plug, grounded SS316 1/4" O.D. sheath 12" long probe

Reg.

$55

$45

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
  
  
 
CodeWire Insulation
GGFiberglass ~ 900°F
FEPFEP Teflon ~ 400°F
PFAPFA Teflon ~ 500°F
KAPKapton ~ 600°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
SSBStainless Steel Braid
ARHStainless S. Armour hose
 
CodeNPT Stainless Steel Nipples
14N1/4" NPT
12N1/2" NPT
34N3/4" NPT
T1KMD4L12316GRTGG
Sample part number
Reg.$95.00 $65.00

TM-JM-D4-L4-316-GRT-GG

On/Off Magnetic held down thermocouple designed for round or flat mounting surfaces. Spring loaded probe with male connector.

 
TM2 Reg.$45.00 $40.00

Magnetic temperature sensor completed with stainless steel braid cable. SLE J, K, T cable

Stainless steel washer flange 1/8" thick x 1 1/8" O.D. with two mounting holes. 1/4" O.D. probe with 1 feet of stainless steel braided cable. Available in type J, K, T
TW-J-D4-L6-316-GRT-GG-3FTSSB

Reg.$38.00 $20.00

 
Flange details click here

Reg.$85.00

$65.00

T9-K-D4-L12-316-GRT-GG-FL
Type K probe with SS316 Compression flange

TA-K-D6-L6-304-UEXP-CER Type K probe sensor with 6 feet of SLE cable and 3/8" O.D. by 6" long SS304 protection sheath. Alumina ceramic insulation. Ungrounded exposed to air with grille opening. Designed for air measurement. Reg.$35.00 $25.00

TA-K-D6-L6-304-UEXP-CER-FL with flange mounting type $25.00

TA-K-D6-L6-304-UEXP-CER-12SB with 1/2" NPT Hex Bushing $30.00

 

Reg.

$65

$40

T12L-J-D3-L12-316-GRT-GG

Reg.

$55

 

 

 

$40

 

$35

T16-EXT-HJMF-6FTARH-304-GG-6FTARH
T16-EXT-JMF-6FTARH-304-GG-6FTARH with standard plug & jack
T17-JM-L36-GRT-GG with a J male plug and 3 FT of cable.

Reg.

$25

$15

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

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

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

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

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

$50.00

Reg. $68.00

 

$52.00

$55.00

$65.00

 
+/-Zoom Photo

T33 $25

Reg.$28

T36 $20

T34 $25

Reg.$28

T37 $20

 

Reg.$35

$25.00

Reg$20

$10.00

30, 24, 20 GA SLE Bare Solid wire

SLC 1/8" NPT Hex brass cap. 1" spring loaded. 3/16" sensing tip c/w 3 feet stainless steel braid and SLE wire. $15.00

SM Shim stock thermocouple. Brass or stainless steel shim with stainless steel braid. 3ft cable $10.00

SR Standard terminal ring with stainless steel braid. 3ft cable $10.00

FR Flattened pipe terminal ring with stainless steel braid. 3ft cable $10.00

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 $10.00

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
Data Acquisition
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

Reg.98.00 $75.00

Without Magnet

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

Reg.68.00 $50.00

Terms & Conditions Toronto Ontario Canada