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Pressure Measurement

Pressure Gauges : Remote and Chemical Seals

S Bharadwaj Reddy
Pressure Gauges : Remote and Chemical Seals Isolating diaphragms have merit even in scenarios where pressure pulsations are not a problem. Consider the case of a food-processing system where we

Pressure Transmitters Purged impulse lines

S Bharadwaj Reddy
Pressure Transmitters Purged impulse lines Another method for isolating a pressure instrument from direct contact with process fluid, particularly when the impulse line is prone to plugging, is purging the

Pressure Transmitters Heat-traced impulse lines

S Bharadwaj Reddy
Pressure Transmitters Heat-traced impulse lines If impulse lines are filled with liquid, there may exist a possibility for that liquid to freeze in cold weather conditions. This possibility depends, of

Pressure Gauge Water Traps and Pigtail Siphons

S Bharadwaj Reddy
Many industrial processes utilize high-pressure steam for direct heating, performing mechanical work, combustion control, and as a chemical reactant. Measuring the pressure of steam is important both for its end-point

Strain Gauge Working Principle

S Bharadwaj Reddy
Strain Gauge Sensors or Piezoresistive sensors Piezoresistive means “pressure-sensitive resistance,” or a resistance that changes value with applied pressure. The strain gauge is a classic example of a piezoresistive element,

Differential Pressure Transmitter Working Principle

S Bharadwaj Reddy
Another common electrical pressure sensor design works on the principle of differential capacitance. In this design, the sensing element is a taut metal diaphragm located equidistant between two stationary metal

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