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How a 4-20mA Transmitter Works ?

S Bharadwaj Reddy
A sensor is an input device that provides a usable output in response to the input measurand. A sensor is also commonly called a sensing element, primary sensor, or primary detector.

Difference between Calibration and Ranging

S Bharadwaj Reddy
The concepts of calibration (trimming) and ranging are often difficult for new engineers of instrumentation to immediately grasp. A simple analogy useful for understanding these topics is that of setting

Important Terms in Calibration

S Bharadwaj Reddy
The term “calibration” in the context of smart/intelligent transmitters is often misunderstood. The information provided here serves to explain the difference between sensor trim, range setting, and current trim. Plants

How are HART instruments calibrated?

S Bharadwaj Reddy
The field instrumentation in process  plants  is  beginning to  come  under  more  sophisticated metrological discipline. Most new field instruments are now smart digital instruments. One popular digital protocol is the HART

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