Process Instrumentation

Bolometer

Bolometric Measurements are based on the dissipation of the RF Power in a small temp.sensitive resistive element called a Bolometer.   This bolometer may be short ultra thin wire having a +ve temp. co. efficient (PTC) of resistance Called Baretter …

LVDT What it Is | How It works | Working | Applications

Linear Variable Differential Transformer (LVDT)     It is also known as an inductive transformer, is defined as a process used for measuring displacement in instrumentation systems. The performance of sensory units drives the accuracy of the overal…

What is a Transducer | Types | Applications

A transducer is an electrical device that is used to convert one form of energy into another form. In general, these devices deal with different types of energies such as mechanical, electrical energy, light energy, chemical energy, thermal energy…

why 4-20 mA is used in instrumentation?

4-20 mA standard is mainly to differentiate the conditions live zero and dead zero . Let me tell an Example  ..Consider  a level sensor fixed in a tank. Now the tank is empty . then the sensor will send the reading as 0mA this zero islive zero, if…

Strain gauge | Application | Working | Importance

strain gauge is a device used to measure the strain of an object. Invented by Edward E. Simmons and Arthur C. Ruge in 1938, the most common type of strain gauge consists of an insulating flexible backing which supports a metallic foil pattern. The …

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