Communicator for field instruments and method for supplying powe

Details Communicator for field instruments and method for supplying powe Communicator for field instruments and method for supplying powe

1995-07-20

1999-11-30

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082505, 3408255, 34087016, G08B 2300

Patent

active

059950218

ABSTRACT:
A communicator for field instruments connected to a transmission line for transmitting electric signals from the field instruments to a host instrument. The communicator operates on electric power fed from an external power supply over the transmission line. The external power supply is arranged in the transmission line. Electric current consumed by the transmission line is set to a constant value.

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patent: 4623871 (1986-11-01), Akano
patent: 4737787 (1988-04-01), Ito et al.
patent: 4797669 (1989-01-01), McGowan, III et al.
patent: 4988990 (1991-01-01), Warrior
patent: 5122794 (1992-06-01), Warrior
patent: 5184121 (1993-02-01), Kogure et al.

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