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Pressure Measurement

Capillary Tubing Pressure Sensor Temperature & Elevation Problems

S Bharadwaj Reddy
Capillary tubing provides a convenient method to separate a pressure instrument such as a gauge or transmitter from the actual process connection, allowing the instrument to be installed in a

Effects of Symmetric and Asymmetric Capillary Tube Pressure Measurement

S Bharadwaj Reddy
Symmetric and Asymmetric Capillary Tube Pressure Measurement Symmetric capillary 1. Seal Effect: If the ambient temperature increases the capillary volume V will tend to exert forces on the DP seal

Resistance Type Pressure Transducers Principle

S Bharadwaj Reddy
Resistance-Type Pressure Transducers Included in this category of transducers are strain gauges and moving contacts (slidewire variable resistors). Figure 1 illustrates a simple strain gauge. A strain gauge measures the

Inductance Type Pressure Transducers Principle

S Bharadwaj Reddy
The inductance-type transducer consists of three parts: a coil, a movable magnetic core, and a pressure sensing element. The element is attached to the core, and, as pressure varies, the

Capacitive Type Pressure Transducers Principle

S Bharadwaj Reddy
Capacitive-type transducers, illustrated in Figure, consist of two flexible conductive plates and a dielectric. In this case, the dielectric is the fluid. As pressure increases, the flexible conductive plates will

What is LVDT ?

S Bharadwaj Reddy
Linear Variable Displacement Transducer (LVDT): A very basic transducer which is always useful in the field of instrumentation, I have studied about this in my college days. Now let me

Elastic Diaphragm Gauge Principle

S Bharadwaj Reddy
Principle of Elastic diaphragm gauges when an elastic transducer (diaphragm is this case) is subjected to a pressure, it deflects. This deflection is proportional to the applied pressure when calibrated.

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