Two-wire transmitter with threshold detection circuit

Details Two-wire transmitter with threshold detection circuit Two-wire transmitter with threshold detection circuit

G - Physics

08

C

340/106

G08C 19/00 (2006.01) G08C 19/02 (2006.01)

Patent

CA 1280486

TWO-WIRE TRANSMITTER WITH THRESHOLD DETECTION CIRCUIT ABSTRACT OF THE DISCLOSURE A threshold detection circuit for improving the output of a two-wire transmitter is disclosed. The transmitter comprises a sensing means which has a sensor responsive to a parameter to be sensed by the transmitter and an excitation means which provides an excitation output to excite the sensor . A threshold detection circuit is coupled to the sensor output and provides a detector output representative of an undesired change in excitation output which can produce a sensor output which is not substantially representative of the sensed parameter An output means is coupled to the sensor output and detector output and provides the transmitter output as a function of the sensor output and detector output. A distinctive transmitter output representative of an undesired change in excitation output thus detected is provided, thereby improving the transmitter output.

579612

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