Answer Posted / d k sathish kumar

PRINCIPLE :
IT WORKS ON THE PRINCIPLE OF TRANSMITTERS.

TRANSMITTERS ARE DEVICES THAT RECEIVES INPUTS (PROCESS
PHENOMENA) SUCH AS DIFFERENTIAL PRESSURE, PRESSURE,
TEMPERATURE, ETC.. AND CONVERTS THAT IN TO A REQUIRED OUTPUT
(MAY BE 4-20 MA, MV, ETC..) WHICH IS THEN RECEIVED BY A
CONTROLLER OR INDICATOR.

FOR FLOW & LEVEL - DIFF. PRESSURE IS USED

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