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Thermocouples & RTDs
Achieve accurate, real-time temperature monitoring with our dependable thermocouples and RTDs (resistance temperature detectors). Built for precision, durability, and fast response, these sensors are trusted across industries where consistent temperature control is critical. Our selection includes standard thermocouples, mineral-insulated thermocouples, RTD probes, and surface sensors, available in multiple types, sheath materials, lengths, and connection options. Ideal for use in industrial ovens, HVAC systems, food and beverage, chemical processing, and power generation, these sensors deliver reliable performance in demanding environments. With rugged designs, high accuracy, and trusted-brand reliability, our thermocouples and RTDs provide the long service life and dependable results needed to keep your systems operating at peak efficiency.
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The Dwyer - SMPW-K-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, K Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$4.74
$4.36
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - SMPW-K-F is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Female, K Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.63
$5.18
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - PCC-SMD-1000 is a Circuit Board Thermocouple Connector featuring SMD, Miniature, 2/3 Pins, Female, Universal Type, ROHS, and 1000/Reel. It is rated for a temperature range of -50 °C to 120 °C (-58 °F to 248 °F). Part of the PCC-SMD Series. Sold individually.
$2,212.51
Should ship between 12 Nov and 19 Nov
Subject to factory lead times
The Dwyer - SMP-K-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMP Series. Sold individually.
Save 8%$6.04
$5.55
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SMP-K-F is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Female, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMP Series. Sold individually.
Save 8%$7.26
$6.67
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SMPW-CC-K-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW-CC Series. Sold individually.
Save 8%$8.03
$7.38
Should ship between 27 Oct and 01 Nov
Subject to factory lead times
The Dwyer - MPJ-K-F is a Miniature Panel Jack featuring K Type, 1 Row, 6 Jacks, 8.1 mm (0.66 ") x 16.7 mm (0.32 ") (H x L) Panel, Miniature Male Connector, ANSI, and Standard. Part of the MPJ Series. Sold individually.
Save 8%$5.49
$5.05
Should ship between 27 Oct and 01 Nov
Subject to factory lead times
The Dwyer - MTP-J-M is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Male, J Type, ANSI, and IEC. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.39
$6.79
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - MTP-U-F is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Female, U Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.61
$7.00
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - SMPW-CC-K-F is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Female, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW-CC Series. Sold individually.
Save 8%$7.43
$6.83
Should ship between 04 Feb and 11 Feb
Subject to factory lead times
The Dwyer - MTP-J-F is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Female, J Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$8.27
$7.60
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - SMP-T-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, T Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMP Series. Sold individually.
Save 8%$6.04
$5.55
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - PCLM is a Cable Clamp for NOX featuring Thermocouple, RTD, and Thermistor/Other Non Thermocouple. Part of the UOX & OTP Series Connectors. Sold individually.
$2.22
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - MTP-K-M is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Male, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.39
$6.79
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - SMPW-T-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, T Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.20
$4.78
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - 4KX24SPP is a Thermocouple Extension Cable featuring Multipair, K Type, 24 AWG, 4Stranded Polyvinyl (PVC) Conductors, Polyvinyl (PVC), ANSI, and Foot. It is rated for a temperature range of 0 °C to 105 °C (32 °F to 220 °F). Sold individually.
$6.96
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - SMPW-J-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, J Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.03
$4.63
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - SMPW-R/S-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, R/S Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.02
$4.62
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SPJ-K-F is a Snap-In Panel Jacks featuring Universal, K Type, 1 Row, 6 Box, 16.3 mm (0.64 ") x 30.4 mm (1.2 ") (H x L) Panel, Female Pin Connector, ANSI, and Standard. Part of the SPJ Series. Sold individually.
Save 8%$10.78
$9.91
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PCLM-MTP is a Cable Clamp for MTP Series Connectors featuring Thermocouple, RTD, and Thermistor/Other Non Thermocouple. Sold individually.
$2.22
Should ship between 12 Nov and 19 Nov
Subject to factory lead times
The Dwyer - MTP-K-F is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Female, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.46
$6.86
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - HMPW-K-M is a Miniature Thermocouple Connector featuring High Temp, 2 Pins, Male, K Type, ANSI, and Write-on Window. It is rated for a temperature range of -29 °C to 260 °C (-20 °F to 500 °F). Part of the HMPW Series. Sold individually.
Save 8%$6.14
$5.65
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - RMJ-K-R is a Miniature Panel Jack featuring K Type, Round Face, 1 Row, 6 Box, Miniature Size Male Connector, ANSI, and Standard. Part of the RMJ Series. Sold individually.
Save 8%$6.60
$6.07
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - HMPW-K-F is a Miniature Thermocouple Connector featuring High Temp, 2 Pins, Female, K Type, ANSI, and Write-on Window. It is rated for a temperature range of -29 °C to 260 °C (-20 °F to 500 °F). Part of the HMPW Series. Sold individually.
Save 8%$7.88
$7.24
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SMPW-K-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, K Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$4.74
$4.36
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - SMPW-K-F is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Female, K Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.63
$5.18
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - PCC-SMD-1000 is a Circuit Board Thermocouple Connector featuring SMD, Miniature, 2/3 Pins, Female, Universal Type, ROHS, and 1000/Reel. It is rated for a temperature range of -50 °C to 120 °C (-58 °F to 248 °F). Part of the PCC-SMD Series. Sold individually.
$2,212.51
Should ship between 12 Nov and 19 Nov
Subject to factory lead times
The Dwyer - SMP-K-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMP Series. Sold individually.
Save 8%$6.04
$5.55
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SMP-K-F is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Female, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMP Series. Sold individually.
Save 8%$7.26
$6.67
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SMPW-CC-K-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW-CC Series. Sold individually.
Save 8%$8.03
$7.38
Should ship between 27 Oct and 01 Nov
Subject to factory lead times
The Dwyer - MPJ-K-F is a Miniature Panel Jack featuring K Type, 1 Row, 6 Jacks, 8.1 mm (0.66 ") x 16.7 mm (0.32 ") (H x L) Panel, Miniature Male Connector, ANSI, and Standard. Part of the MPJ Series. Sold individually.
Save 8%$5.49
$5.05
Should ship between 27 Oct and 01 Nov
Subject to factory lead times
The Dwyer - MTP-J-M is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Male, J Type, ANSI, and IEC. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.39
$6.79
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - MTP-U-F is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Female, U Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.61
$7.00
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - SMPW-CC-K-F is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Female, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW-CC Series. Sold individually.
Save 8%$7.43
$6.83
Should ship between 04 Feb and 11 Feb
Subject to factory lead times
The Dwyer - MTP-J-F is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Female, J Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$8.27
$7.60
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - SMP-T-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, T Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMP Series. Sold individually.
Save 8%$6.04
$5.55
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - PCLM is a Cable Clamp for NOX featuring Thermocouple, RTD, and Thermistor/Other Non Thermocouple. Part of the UOX & OTP Series Connectors. Sold individually.
$2.22
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - MTP-K-M is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Male, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.39
$6.79
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - SMPW-T-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, T Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.20
$4.78
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - 4KX24SPP is a Thermocouple Extension Cable featuring Multipair, K Type, 24 AWG, 4Stranded Polyvinyl (PVC) Conductors, Polyvinyl (PVC), ANSI, and Foot. It is rated for a temperature range of 0 °C to 105 °C (32 °F to 220 °F). Sold individually.
$6.96
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - SMPW-J-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, J Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.03
$4.63
Should ship between 26 Nov and 03 Dec
Subject to factory lead times
The Dwyer - SMPW-R/S-M is a Miniature Thermocouple Connector featuring Flat Pin, 2 Pins, Male, R/S Type, ANSI, and with Write-on Window. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the SMPW Series. Sold individually.
Save 8%$5.02
$4.62
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - SPJ-K-F is a Snap-In Panel Jacks featuring Universal, K Type, 1 Row, 6 Box, 16.3 mm (0.64 ") x 30.4 mm (1.2 ") (H x L) Panel, Female Pin Connector, ANSI, and Standard. Part of the SPJ Series. Sold individually.
Save 8%$10.78
$9.91
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - PCLM-MTP is a Cable Clamp for MTP Series Connectors featuring Thermocouple, RTD, and Thermistor/Other Non Thermocouple. Sold individually.
$2.22
Should ship between 12 Nov and 19 Nov
Subject to factory lead times
The Dwyer - MTP-K-F is a Miniature Thermocouple Connector featuring 3-Prong, Flat Pin, Female, K Type, and ANSI. It is rated for a temperature range of -29 °C to 180 °C (-20 °F to 356 °F). Part of the MTP Series. Sold individually.
Save 8%$7.46
$6.86
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - HMPW-K-M is a Miniature Thermocouple Connector featuring High Temp, 2 Pins, Male, K Type, ANSI, and Write-on Window. It is rated for a temperature range of -29 °C to 260 °C (-20 °F to 500 °F). Part of the HMPW Series. Sold individually.
Save 8%$6.14
$5.65
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
The Dwyer - RMJ-K-R is a Miniature Panel Jack featuring K Type, Round Face, 1 Row, 6 Box, Miniature Size Male Connector, ANSI, and Standard. Part of the RMJ Series. Sold individually.
Save 8%$6.60
$6.07
Should ship between 05 Nov and 12 Nov
Subject to factory lead times
The Dwyer - HMPW-K-F is a Miniature Thermocouple Connector featuring High Temp, 2 Pins, Female, K Type, ANSI, and Write-on Window. It is rated for a temperature range of -29 °C to 260 °C (-20 °F to 500 °F). Part of the HMPW Series. Sold individually.
Save 8%$7.88
$7.24
Should ship between 21 Jan and 28 Jan
Subject to factory lead times
FAQ
- Use thermocouple extension wire (not regular copper) of the same type as the thermocouple itself. Type K thermocouple needs Type K extension wire; mix metals and you create a parasitic junction that adds error. Run the extension wire all the way to the controller or transmitter, not to a junction with copper. Quality extension wire is cheap insurance against the kind of bias errors that are nearly impossible to troubleshoot later.
- Type K (chromel/alumel) goes from -200 to 1260°C and is the most common industrial thermocouple by a wide margin. Type T (copper/constantan) handles -200 to 350°C and is the right pick for low temperature and cryogenics. Type J (iron/constantan) covers -40 to 750°C cheaply. Type E (chromel/constantan) has the highest output of the base-metal types from -200 to 900°C. Type N (nicrosil/nisil) is more stable than K over the same range. The platinum-rhodium types (R, S, B) get you up to 1700°C for furnaces and high-temperature work. For anything below 1200°C, just buy Type K unless there's a specific reason not to.
- Pt100 is a platinum RTD with a resistance of 100 ohms at 0°C. The platinum's resistance changes in a precise, well-characterized way with temperature, which gives much better accuracy and stability than any thermocouple. The default sensor for industrial temperature measurement below 600°C anywhere accuracy matters. Pt1000 is the same idea with 1000 ohms at 0°C, used for longer cable runs and small temperature differentials.
- 2-wire RTDs include lead wire resistance in the reading, which adds significant error on any long run. Only use for very short cable lengths or where accuracy isn't critical. 3-wire is the industrial standard - one extra wire lets the instrument compensate for lead wire resistance, accurate enough for almost all process work. 4-wire is the lab-grade configuration, full lead-wire compensation independent of cable length and resistance, used for the tightest accuracy and calibration work.
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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.