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Basics of Thermocouples and RTDs

Basics of Thermocouples and RTDs - by Tempsens instruments

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Basics of Thermocouples and RTDs

  1. 1. www.tempsens.com LARGEST SENSOR MANUFACTURER
  2. 2.  What is Temperature Sensor. • Types of Temperature Sensors.  Thermocouples. • Types Of Thermocouples. • MI & Non MI Construction. • Thermocouple Insert construction.  RTDs. • Types of RTDs. • Special RTDs. • RTD Insert Construction.  Applications. www.tempsens.com
  3. 3.  The degree of Heat present in an object is called temperature and the Device which is used to Measure the temperature is called Temperature Sensors.  The need of Temperature Sensor is to Quantify and Measure the Object’s Temperature. www.tempsens.com
  4. 4. Thermocouples. RTDs (Resistance temperature Detectors). www.tempsens.com
  5. 5.  Thermocouple is a pairs of dissimilar metal wire joint at one end, which generate a net thermoelectric voltage between the open pair according to temperature difference between the ends.  A thermocouple is made of two or more metals joined together to form two junctions. • One junction is connected to an object whose temperature is to be measured called as measuring junction. • Other junction is connected to an object of known temperature called as reference junction. • This is how Thermocouple measures unknown temperature of the object with reference to the known temperature of an another object. www.tempsens.com
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  11. 11.  Resistance thermometer use metals that alter there electric resistance when heated.  Platinum is the most commonly used material for industrial RTD. However Copper and Nickel are also used for some applications.  The resistance at 0°C is called R𝑜 and it is an important parameter to be defined. The most commonly used RTD element is of platinum with resistance of 100 O at 0 °C. Thus named as Pt 100.  Platinum RTD are suitable for temperature range -200 to 850°C. Normally industrial RTD’s are used up to temperature range of 400°C. www.tempsens.com
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  14. 14. • Slide shoe bearing RTDs. • Vibration proof RTDs for Bearing & DG sets. • Motor & Transformer winding temperature RTDs. • Handheld & Probe in various designs. • RTDs with IBR approved Thermowells. • Strap on RTDs for nuclear application. • High Temperature RTDs up to 1/10 DIN. • Semi Standard PRTs with NABL Certificate. • Calibrated at Fixed points suitable up to 661°C. www.tempsens.com
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  16. 16. • Cement Industries • Power Industries • Steel Industries • Glass Industries • OEM’s Industries • Non- Ferrous Industries • R & D Industries • Pharmaceutical Industries • Petrochemical Industries • Nuclear Industries. • Chemical & fertilizers Industries www.tempsens.com
  17. 17. 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 E-mail : info@tempsens.com Website : www.tempsens.com Temperature Sensing, Heating & Cables