Make a P&ID of the modernized version of the pictorial loop diagram shown. All instruments are now electronic except for the control valve, which is pneumatic. A conventional controller is used, mounted in a control room.
Add necessary instruments, if required.
Basic Instrumentation & Process Control - Symbols & Drawings
STEAM (MANIPULATED VARIABLE)
Pictorial Diagram
CONTROL VALVE
FOXBORO I2A PNEUMATIC TEMP. TRANSMITTER (MEASURING MEANS)
HEAT EXCHANGER
20 P.S.I. SUPPLY
HEATED WATER (CONTROLLED VARIABLE)
LOAD
BUCKET TRAP
CONDENSATE RECORDER/CONTROLLER
COLD WATER