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Flowmeter Primer: Two-Wire Coriolis and Electromagnetic Transmitters

Two-wire transmitter technology came about from an agreement among various instrument suppliers in the 1950s to standardize on 4–20 mA current loops as a means of sending a flow, temperature, pressure, or similar process signal back to control and monitoring systems. In the 1980s, HART was added to the 4–20 mA signal, providing additional calibration […]

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How Do You Pick a Flowmeter?

Picking a flowmeter takes both knowledge of the types of meters available and the kind of empirically derived knowledge that comes from experience. If you are like most people, you first think about the types of meters, their features, and their hardware and software. You might start to build the meter from the application requirements. […]

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