Category : Temperature Measurement

Temperature Measurement

Disadvantages of Resistance Temperature Detectors

S Bharadwaj Reddy
Resistance Temperature Detectors (RTDs), are sensors used to measure temperature. Many RTD elements consist of a length of fine wire wrapped around a ceramic or glass core but other constructions...

Important Factors for Thermocouple Selection

S Bharadwaj Reddy
It would be difficult to chart a career course in the industrial process control field without being exposed to thermocouples. They are the ubiquitous basic temperature measuring tools with which...

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...

Helix Bimetallic Thermometer Principle

S Bharadwaj Reddy
This article is a continuation of my previous post on Bimetallic Thermometer Principle of Helix Bimetallic Thermometer: When a bimetallic helix fixed at one end and free at the other...

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