A differential pressure sensor and transmitter connects to three-quarter-inch supply and return piping via stainless steel lines from the point of connection. Pressure gauges and elbows are installed along the piping runs, with signal wiring routed to the direct digital control system. All differential pressure piping from the point of connection to the sensor and transmitter is specified as stainless steel typically.
3/4" RETURN SUPPLY PRESSURE GAUGE DIFFERENTIAL PRESSURE SENSOR/TRANSMITTER TO DDC P P ELBOW DIFFERENTIAL PRESSURE PIPING FROM POC TO SENSOR/TRANSMITTER SHALL BE STAINLESS STEEL (TYPICAL).
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