Control Vocab
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15 Terms
Control Loop
sensor-transmitter-controller-control element
Primary Element
first sensor
Transmitter
senses a process variable & converts it to an output signal
Final Control Element
directly regulates the process
P&ID
process & instrumentation drawing
Loop Sheet
connection between control loop devices, location, & signal path between devices
Specification Sheet
spec sheet
Instrument
device that measures or controls
LRV
lower range value
URV
upper range value
Span
urv-lrv
Live zero
4ma
Discrete Signal
either on or off, open or closed, etc
Analog Signal
continuous operating signal that is a continuous representation of physical quantity, property, or condition
Digital Signal
transmits information via a sequence or pattern of high and low values
Note 
Flashcards (92)