常见的PID图例缩写符号

NOTES

1. FOR PIPING AND EQUIPMENT SYMBOLS , SEE DWG 000054

2. THE INSTRUMENTATION REPRESENTATION ON P&I FLOW

DIAGRAMS, IN GENERAL , CONSISTS OF A SINGLE OR SEVERAL BALOONS SUFFICIENT FOR FUNCTIONAL DEFINATION, COMPLEX OR UNUASUAL LOOPS ARE DIPECTED WITH INDIVIDUAL COMPONENT BALOONS AS REQUIRED FOR CLARITY.

3. ALL CONTROL ROOM INSTRUMENTS ARE LOCATED IN THE CENTRAL CONTROL ROOM UNLESS OTHERWISE NOTES.

4. NEEDLE VALVE AND CHECK VALVE ARE INTEGRAL PART

OF ROTAMETER.

5. AN INSTRUMENT NUMBER WITH AN X SUFFIX OR AN

X IN PLACE OF THE LOOP NO. DENOTES THE INSTRUMENT IS FURNISHED AS PART OF AN EQUIPMENT PACKAGE. 6.

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