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Practical Process Control System Questions & Answers – 3

Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value.

On the job, you are sent to troubleshoot a brand-new control system, consisting of a pneumatic liquid level transmitter connected

Consider this control system, set up to maintain the temperature of a chemical reactor vessel at a constant (“setpoint”) value.

Transducers play an important role in the field of instrumentation and control engineering. Any energy in a process should be

Linear Variable Displacement Transducer (LVDT): A very basic transducer which is always useful in the field of instrumentation, I have

Principle of Strain gauge load cell When steel cylinder is subjected to a force, it tends to change in dimension.

A bimetallic strip is made up of metal A and B, having different thermal expansion co-efficient. It is bonded together.

Bourdon tube pressure gauge when an elastic transducer ( bourdon tube in this case ) is subjected to a pressure,

Principle of Elastic diaphragm gauges when an elastic transducer (diaphragm is this case) is subjected to a pressure, it deflects.

Strain Gauge Pressure Sensor Principle : When a closed container is subjected to the appilied pressure, it is strained (that