Category: Resistance Temperature Detectors
August 12, 2021
RTD and its working
Resistance thermometer use metals that alter their electric resistance when heated. Platinum is most commonly used material for industrial...
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How to select right RTD for your application?
Select the right one among various RTDs on the basis of temperature range and accuracy requirement. RTDs work best...
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Applications of RTD
Resistance thermometers offer the greatest benefits relative to other thermometer types in these situations: Accuracy and stability are the...
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Equation of RTD
At 0° C, A Platinum RTD has a resistance of 100 Ω & a temperature co-efficient of about 0.00385...
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RTD Materials
The criterion for selecting a material to make an RTD is: The material must be malleable so that it...
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Characteristics of various materials used as RTD
Element Material Temperature Range (ºC) ResistanceRatio (R100/R0) Resistivityx10-8 (O.m) Relative Cost Linearity Deviation (0-100ºC) Platinum -200 to 850 1.3925...
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Temperature Rating for RTD’S.
The maximum temperature rating for RTD’s is based on two different factors. First is the element material.Platinum RTD’s can...
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Types of RTD’s
Platinum RTDs typically are provided in two classes:Class A and Class B.Class A is considered high accuracy and has an...
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Tolerance table for types of RTD’s according to IEC751.
Tolerance table for types of RTD’s according to IEC751. Temperature 1/10 Din (+-ºC) 1/5 Din (+-ºC) 1/3 Din (+-ºC)...
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Standard Platinum RTDs
The ITS-90 (International Temperature Scale of 1990- used as a worldwide practical temperature scale in national metrology labs like...
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RTD Standards
There are two standards for platinum RTDs: The European standard (also known as the DIN or IEC standard) and...
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Construction of RTD
The RTD elements nearly always require insulated leads attached. At temperatures below about 250 ºC PVC, silicon rubber or...
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