Albert O' Grady and Jim Ryan, Analog Devices B.V.

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Machine Safety September 1, 1998

Designing and Applying Remote Field Instruments

A remote field instrument is a device used to sense a physical parameter such as pressure or temperature. This measurement is translated to a signal current in the range of 4-20 mA which is proportional to the measured variable. The 4-20 mA standard has provided an excellent platform for the development of process instrumentation.

By Albert O' Grady and Jim Ryan, Analog Devices B.V.
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