Process control plant comprising processing of signals
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United States of America Patent
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-
Apr 29, 1980
Grant Date -
N/A
app pub date -
Oct 3, 1977
filing date -
Oct 11, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process control installation has means for sensing a plurality of physical conditions connected to means for comparing the condition to a reference. A differential signal is fed to a corresponding reproduction circuit which in turn feeds it to inputs of a plurality of majority decision circuits. The majority decision circuits are in turn connected to pairs of logic circuit trains which in turn are connected to other logic circuitry for intrinsic security.
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