Basics of Thermocouples and RTDs - by Tempsens instruments

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LARGEST SENSOR MANUFACTURER

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.
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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.
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4. Thermocouples. RTDs (Resistance temperature
Detectors).
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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.
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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.
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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.
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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
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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