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Temperature Measurement

What is Thermowell and How-to choose Thermowell Probe Length ?

S Bharadwaj Reddy
The American Society for Testing and Materials (ASTM) has defined the term Thermowell as ” a closed end re-entrant tube designed for insertion of temperature sensing element, and provided with

Resistance Temperature Detectors (RTD) Construction

S Bharadwaj Reddy
The RTD incorporates pure metals or certain alloys that increase in resistance as temperature increases and, conversely, decrease in resistance as temperature decreases. RTDs act somewhat like an electrical transducer,

Bimetallic Thermometer

S Bharadwaj Reddy
A bimetallic strip is made up of metal A and B, having different thermal expansion co-efficient. It is bonded together. These thermometers use the following two principles: 1. All metals

RTD Calibration

S Bharadwaj Reddy
R.T.D. Accuracy checks for a resistance temperature detector/device (RTD) is often necessary to validate the accuracy of a new RTD. How They Work There are three basic types of RTDs:

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