Rocks & mirror

WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

Four-terminal sensing

energy

Four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements than the simpler and more usual two-terminal (2T) sensing. The technique is called Kelvin sensing.

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