Method to communicate with multivalved sensor on loop power

Details Method to communicate with multivalved sensor on loop power Method to communicate with multivalved sensor on loop power

2011-04-26

2011-04-26

Velez, Roberto (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

Reexamination Certificate

active

07932714

ABSTRACT:
A method and apparatus for detecting at least two process variables in a loop powered circuit. The method includes the steps of (a) powering the loop, detecting a first process variable value during a first time interval, (b) detecting a second process variable value during a second time interval after the expiration of the first time interval, where the detected process variable values are represented by the magnitude of a current passing through the loop circuit.

REFERENCES:
patent: 5607002 (1997-03-01), Siegele et al.
patent: 6307483 (2001-10-01), Westfield et al.
patent: 6473710 (2002-10-01), Eryurek
patent: 6985831 (2006-01-01), Ito et al.
patent: 2007/0150146 (2007-06-01), Bernardi et al.
patent: 2007/0270982 (2007-11-01), Foss et al.

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