Thermocouple App Notes Series, 1 of 4 – Thermocouple Fundamentals

App notes on how TCs work & their calibration

Thermocouple App notesOnline — Thermocouples are broadly used in many industrial and scientific applications. But it can be a bit tricky to understand how they work and how to calibrate them.

Fluke Calibration has developed a thermocouple application note series created by temperature calibration experts to help you learn what you need to know.

The series covers how thermocouples work, choosing calibration equipment, calculating uncertainties, and how to calibrate thermocouples.

There are four application notes in the series:

Visit the webpage at Fluke calibration where you may download the app notes directly: http://us.flukecal.com/blog/thermocouple-calibration-what-you-need-know

TI Temperature Measurement Videos

TI, or Texas Instruments, is one of the world’s most prolific and largest makers of temperature sensors. They make all kinds but their sensors are mostly in the form of Integrated Circuit semiconductors.

TI also does an exceptional job in educating users how their devices work and how they can be interfaced and incorporated in measurement systems. Especially useful are the videos showing how some of their other integrated circuit modules can be used with external temperature sensors, like Thermocouples, RTDs and Thermistors.

Here’s an example of an interesting one:

Developed through TI’s expertise in MEMS technology, the TMP006 is the first of a new class of ultra-small, low power, and low cost passive infrared temperature sensors. It has 90% lower power consumption and is more than 95% smaller than existing solutions, making contactless temperature measurement possible in completely new markets and applications.

Check out their Video Channel on YouTube, especially the long list of videos already published about “Temperature Measurement”. It very straightforward; just go to: https://www.youtube.com/user/texasinstruments/search?query=%22temperature+measurement%22

UKAS-Accredited Calibration & Supply of Pt-Rh thermocouples

(0 °C up to 1600 °C)

NPL_Brochure_PictTeddington, UK —  The UK’s National Physical Laboratory (NPL) offers a UKAS-accredited thermocouple calibration service (laboratory number 0478) for platinum-rhodium thermocouples using freezing points of zinc, silver and copper (up to 1100 °C) and the melting points of gold and palladium (up to 1600 °C). (Type B thermocouples are calibrated from 400 °C)

NPL also supplies calibrated platinum-rhodium thermocouples from stock. These are made from wires assembled into insulators and calibrated up to either 1100 °C or 1600 °C. Read more UKAS-Accredited Calibration & Supply of Pt-Rh thermocouples

Temperature Sensor Organizations in The Open Directory

About the Open Directory Project

The Open Directory Project (http://www. dmoz.org) is the largest, most comprehensive human-edited directory of the Web. It is constructed and maintained by a vast, global community of volunteer editors. It is also the Web locale where most of the large Internet Search Engines and Directories look for new entries or websites to scan for new information.

About Temperature Sensor Organization Listings on the Open Directory

Temperature sensor suppliers and related organizations are mostly found on two separate pages within the Open Directory,
Listing for Science: Instruments and Supplies: Laboratory Equipment: Temperature Sensors and Thermocouples and Business: Electronics and Electrical: Instrumentation: Temperature. Surprisingly, as of June 2012, there was little duplication of entries on the two listings, yet DMOZ listings are free and multiple listings are encouraged by most Web Marketing specialists.

The first listing is on this page and the second listing is on the second page of this article; see link at the bottom of this page.

Listing for Science: Instruments and Supplies: Laboratory Equipment: Temperature Sensors and Thermocouples (56) as of 19 June 2012 Read more Temperature Sensor Organizations in The Open Directory

TEMPSENS Instruments (I) Pvt. Ltd

Tempsense LogoTEMPSENS Instruments (I) Pvt. Ltd is a part of Pyrotech Group which was established by four technocrats in 1976 at Udaipur, with their first product as Thermocouples and RTDs.

They have focused ourselves for the supply of high quality Temperature sensors, related products accessories; services built to specific customer needs.

They have tied up with world leading makers in Temperature measuring technology for critical components, Non contact Temperature measurement, Thermal Imaging Solutions and Furnace Cameras etc.

They add value to these products and deliver complete engineered solutions, backed by efficient service and application support.

Today they have strong sales and service network operating from important locations of India. Continuing their constant endeavor of delivering solutions for temperature technology to their large base of over two thousand satisfied customers.

Tempsens Instruments (I) Pvt. Ltd.
B-188 A, Road No. 5, MIA,
Madri Udaipur – 313 003 (Rajasthan)
INDIA

Phone: 91-294-3057700
Fax : 91-294-3057750

Tempsens Instruments (I) Pvt. Ltd. – Unit II
A-190, Road No. 5, MIA,
Madri Udaipur – 313 003 (Rajasthan)
INDIA

Phone : 91-294-3052929 / 3052953
Fax : 91-294-3052950
E-mail : info@tempsens.com
Website: www.tempsens.com

YEAR SIGNIFICANT EVENT(S)
1976 Pyrotech international Established, with first product being Thermocouple
1985 Established Tempsens “a dedicated facility for thermocouples and RTDs
1990 Expansion and tie up with European companies Ceramtec, B+B, ISOTECH
1992 Major breakthrough orders from Steel plants Visakhapatnam, Bokaro, TISCO, ESSAR etc
1994 Export of Thermocouple accessories to Germany. Awarded ISO 9002
1995 Tie up with ISOMIL Germany for MI Cables
1998 Tie up with IMPAC Germany for Non-contact Pyrometers Breakthrough in Glass Industry-Approval by International consultants
1999 Breakthrough in Steel Industry
2000 Tie up with IRISYS UK for Thermal Imagers
2003 Expansion of factory building, manufacturing of Temperature Calibration Equipments.
2004 Tie up with Young Kook Korea for Furnace monitoring camera
Tie up with HGH France for Kiln Shell Scanners
Started state-of-the-art calibration laboratory (NABL Accrediated)
2005 NABL Accredition for Calibration Lab upto 1500 º C
Tie up with Rossel Messtechnik GmbH, Germany
Export orders from Srilanka, Pakistan, Nigeria, Germany, Netherlands etc.
2006 Rajeev Gandhi National Quality Award
Inhouse manufacturing of Calibration Equipments
2007 Expansion of Tempsens Production Capacity
Tempsens emerging as world supplier for European countries for temperature sensors & allied products.
2008 Tie up with Marathon Heaters
New Addition of Fixed point Cells in our Lab
Expansion of New Building Tempsens Unit II
Manufacturing of Compensating Cables.
2009 New facilities started – Tempsens Unit #II for manufacturing cables. A joint venture with Marathon heater Inc, USA for Industrial Heaters.
2010 Technical Collaboration with AST – Accurate Sensing Technologies (Israel) for Pyrometers.

Note: This special Vendor Detail Page is provided as a courtesy beginning in 2012 to recognize those organizations that have supported our work in building, maintaining and updating this unique web resource by purchasing advertizing or paid Web links on this web site. Thank you!

Thermalogic Corporation

Cost Effective Solutions For Temperature & Humidity Measurement & Control

thermalogic_logo_img

Hudson MA, USA —  Thermalogic® Corporation began in 1971 as a supplier of rugged, encapsulated analog temperature control modules, which are still an ideal solution for numerous control situations. Their line of control/sensor designs and products has steadily expanded over the decades, providing cost effective solutions ranging from large multiple zone digital to tiny analog controls and extensive sensor capabilities tailored to exact job requirements.

Thermalogic® customers comprise a cross section of industry and business, including food processing and service, test equipment, fabrication machinery, rail transportation, cooling and heating equipment, semiconductor processing, agriculture, environmental treatment, and laboratory apparatus.

The full range of Thermalogic® service is performed in-house, including R&D, analysis of customer requirements, product design, manufacturing, quality control, and warranty maintenance.

Their products include: Read more Thermalogic Corporation

Thermocouples on Dmoz (142)

Open Directory*: Web Sites Related to Thermocouples (1-20 of 142)

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Rüeger Temperature Sensors

Sensors & gauges for temperature & pressure

Capteurs & instruments pour la mesure de températures et de pression

Sensors und Messgeräten für Temperatur und Druck

RÜEGER S.A. was founded in 1942 and offers to a select clientele the most complete range of temperature and pressure measuring instruments in the world.

Over 65 years of history have provided a huge experience that now constitutes the basis of a strategy of high specialisation. The Company today has 170 employees providing top products and quality services on all five continents around the world.

Head Office and subsidiaries

RÜEGER S.A. has its Head Office in Crissier (Lausanne) and a sales office in Stuttgart (Germany). The rapid growth of the emerging markets of
S.E. Asia encouraged the Company to open a sales office in Kuala Lumpur (Malaysia) and a subsidiary in Peking (China).

Measuring the temperature …  Measuring temperature is an extensive subject. RÜEGER S.A. is the greatest specialist for industrial applications.

Local temperature reading
The temperature is indicated at the place where it is measured.
The operation of such an instrument requires no external energy supply.
This is the bimetallic or gas-pressure thermometer (Filled System Thermometer).

Remote temperature reading
In this case, the information is sent to and indicated at a place other than that in which the measuring device is located.
In this case, thermoelectric sensors (thermocouples) requiring a 24V power supply are used.

RUEGER SA Switzerland info@rueger.ch
RUEGER GmbH Germany rgmbh@rueger.com
RUEGER Sdn Bhd Malaysia sales@rueger.com.my
BEIJING RUEGER Precision Instruments China sales@bjrueger.com

RTD Vendors

RTDs (Resistance Temperature Detectors)  are wire wound and thin film devices that depend on the temperature coefficient of electrical resistance of metals. As the temperature increases, the positive temperature coefficient of the metal produces an increasing resistance value.

You can read more about them and how they work on the companion RTD pages.

Some metals have a nearly ideal, linear coefficient, like platinum . While other materials have more non-linear coefficients, such a copper and nickel.

This page provides links to some of the vendors of these devices.

You may note some redundancy with links on related pages. A good part of that is due to the fact that some vendors supply more than one type of sensor, plus many provide technical, applications and related support to customers and prospective ones.

Reading vendors literature can be a great, but unstructured way, to gain some technical knowledge. The only danger is that it is hard to learn more than the vendor puts in their literature or what their salesperson knows.

That approach can be quite variable but certainly does not make it easy for you to evaluate products without benchmarks.

Some advice (non-definitive): check with more than one vendor and get some education about these sensors from other sources, too.

There are books and courses available. Check your local library’s technical section or a engineering or science library at a university or technical college or school or the ISA or someone on the ASTM E20 Committee on Temperature Measurement.

ASTM E20 has a special subcommittee devoted to just RTDs. You can find more about their RTD standards on the RTD Standards Page of this site.

Thanks for visiting.

General Resources for Vendors

Some RTD Vendor Web Sites:

  1. Advanced Sensing Products (USA)
    A secondary standard PRT and precision RTD probe manufacturer. They make own RTD elements to completely control product quality. Provide NIST traceable calibration services with temperature ranging from -189 to 850°C. Customers are in metrology, instrumentation, power industry, turbine manufacturers and the military.
  2. ARi Industries(UK) Ltd home page
  3. Biodata: New Products (UK)
  4. Burns Engineering, Inc. (USA) designs and manufactures temperature products, for all industries and processes, with standard, custom, and Hazardous Location approved models. ISO-9001 Registered. ISO-17025 Accredited.(RTDs, Thermocouples, Engineered Sensors, Transmitters, Thermowells and Accredited Calibration Service)
  5. Conax Buffalo Technologies(USA)
    A leading manufacturer of temperature sensors including thermocouples and RTDs In Buffalo (where else?) New York.
  6. Ephy-Mess GmbH (Germany)
    Sensorik für thermischen Motorschutz, für die Verkehrstechnik, für den Anlagenbau und für Laboranwendungen: Pt-100, Pt-500, Pt-100, Wickelkopffühler auf Pt-100, Ni- und Cu- Basis.
  7. HL-Planar Technik(USA)
    US Office in Scottsdale Arizona–A leading supplier of Nickel and Copper RTDs
  8. JMS Southeast, Inc.
    In Statesville, North Carolina, USA
  9. Jumo Process Control RTD Sensors and a lot more-home page
  10. La Termotecnica (Italy)(Italiana and English)LA TERMOTECNICA e’ una societa’ Italiana, fondata nel 1976 e’ una tra le prime aziende italiane a produrre e progettare con tecnologia propria sonde a termocoppia e termoresistenza.
    LA TERMOTECNICA, an Italian company set up in 1976, is one of the leading companies in Italy in the production and design of temperature sensors based on proprietary thermocouple and RTD technology.
  11. M & Ma Sensorstech (USA & CHINA)
    A cooperative venture with Anhui Tiankang Co. Ltd. a measuring instrument design and manufacturing company. Their primary product lines are Resistance Temperature Detectors, thermocouples, temperature transmitters, compensating cable and complete sensor assemblies. They specialize in OEM and private labeled equipment due to their low cost, ISO-9000 approved manufacturing capabilities.
  12. Precon, Inc. (USA)
    RTDs, NTC Thermistors and Humidity Sensors available in standards or custom probes. Precon also designs and builds controllers and can provide turnkey sensing and control solutions
  13. Pyro Electric Inc. (USA & INDIA)A ‘Design to Engineer’ manufacturer of Thermocouples, RTDs and their assemblies, plus Temperature and Pressure gages. They have a track record as suppliers to Oil Refineries, Petrochemical Plants and other process industries. They are ISO 9001:2000 certified along with ATEX 94/9/EC approved. Customers include Exxon Mobil, Petronas, Reliance, GAIL, L & T Ltd, and Samsung.
  14. RDF Corp.(USA)
    RDF in New Hampshire; well known for their unique flexible film sensors, too.
  15. The RTD & SPRT supplier listings on TempSensor.net (USA)
    The Free & Self Service Directories of Temperature & Moisture Sensor Resources
  16. RTD Company, (USA)
    Cambridge, Minnesota
  17. SDI (USA)
    Sensing Devices Inc., in Lancaster PA
  18. Smith Systems Inc (USA)
    Brevard, North Carolina, Standard and Custom Sensors for Speed, Motion and Temperature – Cabling and Controls
  19. STOLAB (USA)
    Accurate Industrial Thermometers
  20. Temp-pro inc.(USA)
    From Northampton, Massachusetts, where custom is part of Customer.
  21. Tempsens Instruments India
    An ISO 9001/2000 certified manufacturer of all types of RTDs, Thermocouples,Thermowells, Calibration Baths and associated accessories such as Connection Heads, Compensating Cable and Ceramic Tubes. They offer High Accuracy RTDs for general and special purposes. They are available in Class A, B, ½ , 1/3 , 1/5 DIN, 1/10 DIN with various sheath material such as SS304, 316, 310, Hastalloy,  Monel etc.
  22. THERMOCOUPLES & RTD’s (Zambia)
    Yes, Zambia in Africa
  23. Thermo-Electra b.v.(Netherlands)
    “Your partner in temperature sensors”-Industrial thermocouples RTDs and Thermowells
  24. Thermo-Kinetics (Canada)
    Manufacturing help from knowledgeable folks headquartered in Mississauga ONT with regional offices throughout the Provinces. where service is foremost!
  25. Weed Instruments(USA)
    Corporate Home Page From Texas
  26. Xian Diamond (China)
    Supply RTDs and assemblies mostly to OEMs.

TC Vendors

Thermocouple (TC) Vendors and Suppliers

Listed here are web sites for some thermocouple vendors and related products around the world. It is incomplete and will cover more organizations in time.

If you wish to learn more about thermocouples, what they are and how they work, visit our companion pages by clicking here.

Some of the related products includes connectors, insulation specialties, indicators and controllers and much more. A trip through a good sized thermocouple manufacturer’s catalog is an excursion into a new and wondrous world for a first-timer.

(Never knew there were so many plumbers involved in making temperature measurements!)

After that it’s more like an engineer’s dream. (e.g. Where is that 4-holed mullite bead insulation for the Inconel sheath that’ll be used with my type K ungrounded junction device having the ceramic junction block in the cast iron, right angle head with a 1″ NPT male threaded pipe nipple? Should we use an aluminum head?)

Engineers, enjoy!

Featured Link
GEC Instruments (USA)
Multiple channel thermocouple based temperature data loggers connect to a PC via RS232 serial port or USB.Built in calibration wizard enables user calibration of individual thermocouples to attain overall system measurement accuracy of better than ± 0.1°, including thermocouple wire error. GEC Instruments also provide custom thermocouples and custom thermocouple calibrations.

Vendor List

  1. A J Thermosensors Ltd,(UK)
    West Sussex ” Wherever a temperature measurement is required, AJT can supply both the sensor and the instrumentation to suit the application”; Thermocouples; RTDs, and more.
  2. AccuTru International(USA)
    Self-validating, self-diagnostic temperature measurement systems, extended life, mineral insulated thermocouples, ceramic noble metal thermocouples for glass tanks and other high temperature uses and thermocouples for gas turbines.
  3. ARi Industries (USA)
    One of the thermocouple companies known for their specialty in very high temperature thermocouples.
  4. ARi Industries Ltd(UK)
    Home page
  5. Paul Beckman Company ( USA)
    The source for ultra-thin thermocouple wire and small, fast-responding thermocouple probes.
  6. Biodata: Measurement and Control Index (in the UK)
  7. Biodata: Thermocouple Tables (in the UK) for Accuracy
  8. Branom/LITERATURE/thermocouple
  9. Brearley (U.K.)
    Brearley, part of RM&C Ltd, is a leading ISO 9001/2000 manufacturer of all types of thermocouples, MIs RTDs, thermowells and associated accessories such as extension cable, plugs and sockets. Contact sales@roxspurmc.co.uk or visit their website at www.controlsdirect.com.
  10. Carpenter Technology Home Page
  11. W. H. Cooke & Co., Inc.USA)
    A thermocouple manufacturer that specializes in specialty thermocouples and related temperature indicators and controllers for the Baking Industry. Also a manufacturers rep for other instrumentation. In Maryland.
  12. Douglas Engineering
    Manufacturer of hermetic feedthrough connectors and harness in thermocouple alloys Texas (USA).
  13. Electrical & Electronics Corporation (India)
    Process Control Instrumentation Sensors and accessories, e.g. Thermocouples, RTDs, cables & Thermowells.
  14. First Capitol Wire & Cable Co. Inc.
  15. GEC Instruments (USA)
    Multiple channel thermocouple based temperature data loggers connect to a PC via RS232 serial port or USB. Instruments are accompanied by a versatile Windows software package for display, plotting and logging of temperatures. Built in calibration wizard enables user calibration of individual thermocouples to attain overall system measurement accuracy of better than ± 0.1°, including thermocouple wire error. GEC Instruments also provide custom thermocouples and custom thermocouple calibrations.
  16. Goodfellow Corp. (USA)
    Thermoelectric alloys in Berwyn, Pennsylvania.
  17. Hewitt Industries,
    Manufacturers of thermocouples
  18. Industrifil (France)
    A manufacturer of miniature insulated wires and cables (copper and thermocouple).
  19. Instrument Service & Equipment, Inc.(USA)
    In Cleveland Ohio. Their name says it all!
  20. THERMOCOUPLE TECHNICAL REFERENCE DATA
    including International Color (Colour) Codes -from ISE in Cleveland Ohio, USA.
  21. JMS Southeast (USA)
    Statesville, North Carolina, …. TC maker and supplier of all kinds of temperature sensors to industry and commerce from North Carolina USA
  22. Jumo Process Control
    Food thermometers, thermocouples, control and more
  23. KEYOSENS COMPANY (CANADA)
    (Formerly known as Heaton Co.) Manufactures industrial electric heaters and temperature sensors (mica band heaters, ceramic band heaters, air heaters, thermocouple and RTD sensors for precise control) that can be customized for most applications.
  24. Labfacility Temperature Newsletter from the UK
  25. La Termotecnica(Italy)(Italiana and English)
    LA TERMOTECNICA e’ una societa’ Italiana, fondata nel 1976 e’ una tra le prime aziende italiane a produrre e progettare con tecnologia propria sonde a termocoppia e termoresistenza.
    [LA TERMOTECNICA, an Italian company set up in 1976, is one of the leading companies in Italy in the production and design of temperature sensors based on proprietary thermocouple and RTD technology.]
  26. MTI Sensors (USA)
    Thermocouples, transmitters, wire &cable and much more in Lewisville, Texas,
  27. Peak Sensors (UK)
    A TC maker and instrumentation supplier in Chesterfield, Derbyshire .
  28. Pentronic (Sweden)
    A leading supplier of temperature measurement equipment in Scandinavia for industry, research and education. Manufactures primarily Pt 100 and thermocouple elements. Their calibration laboratory is accredited for temperature, electrical resistance and current (SWEDAC 0076).
  29. Pyro Electric Inc.(USA & INDIA)
    A ‘Design to Engineer’ manufacturer of Thermocouples, RTDs and their assemblies, plus Temperature and Pressure gages. They have a track record as suppliers to Oil Refineries, Petrochemical Plants and other process industries. They are ISO 9001:2000 certified along with ATEX 94/9/EC approved. Customers include Exxon Mobil, Petronas, Reliance, GAIL, L & T Ltd, and Samsung.
  30. Pyrotek, Inc. (USA)
    Thermocouples in Spokane, Washington.
  31. RÜEGER S.A.
    One of the world’s largest makers of high quality bimetallic, gas pressure and thermoelectric temperature sensors
  32. Sandelius Instruments, Inc.(USA)
    Multipoint thermocouples, bearing thermocouples, thermowells in Houston Texas,
  33. SMI – The Medical Marketplace – Cryosurgical Instruments
  34. TC Ltd (UK)
  35. TechniCAL: Ecklund Thermocouple Receptacles
  36. Temprox(USA)
    Thermocouple and RTD assemblies in Lakeland, Fla.
  37. Temp-Pro Inc (USA)
    ..Temperature Sensing Professionals, Northampton, Mass.
  38. Tempsens Instruments India
    An ISO 9001/2000 certified manufacturer of all types of thermocouples, RTDs, Thermowells, Calibration Baths and associated accessories such as Connection Heads, Compensating Cable and Ceramic Tubes. Thermocouples includes standard Base metal, Noble Metal and special thermocouples in simplex, duplex and multipoints in a variety of sheath materials. They manufacture custom built products and have been supplying to many countries all round the Globe.
  39. Thermo-Electra b.v.(Netherlands)
    “Your partner in temperature sensors”-Industrial thermocouples to accompany their specialty RTDs and Thermowells
  40. Thermo Electric Direct USA
  41. Thermo Kinetics Co. Inc, (Canada)
    The knowledgeable and nicest guys (ioho) in all of Canada, Mississauga ONT and other cities.
  42. Versa Gauge USA
    Unique dual tc/Bimet or RTD/Bimet with industrial round gauges (3″& 5″) in ANSI 304 SS-to provide both local and remote temperature values.
  43. Thermocouple Technology Inc. (USA)
    Thermocouples, Thermowells, RTDs, Transmitters, Thermocouple Wire, Indicators, Controllers and more in Quakertown, Pennsylvania, USA.

Vendors! List your company here at a reasonable fee (Visit ADD LINK)

Vendors! List your company yourself FREE on:
The Temperature & Moisture Sensor Directories: www.TempSensor.net

Thanks for visiting!

There’s also news at TempSensorNEWS.com, our focused, growing news site where manufacturers, technical, training and services organizations can post their news free, with no registration requirement.

Then, there’s our new MeasurementBlog.com site with open commentaries and commenting. encouraged.

All part of the new look to our MeasurementMedia Division.