Transcription of MISCELLANEOUS SYMBOLS: VALVE ACTUATORS
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INSTRUMENT SYMBOLS: TEMPERATURE ELEMENT (WITH WELL)MEASURING ELEMENTS:VARIABLE AREA FLOW METER (ROTAMETER)FLOW INDICATOR VALVED(ROTAMETER WITH ATTACHED VALVE )FLOW ORIFICEINLINE FLOW INSTRUMENTPRIMARY ELEMENT ORANNUNCIATOR CABINET ORINSTRUMENT MOUNTEDINSTRUMENT MOUNTED ATHARDWARE INTERLOCKAN AUXILIARY LOCATIONON BACK OF PANELPANEL MOUNTED INSTRUMENTLOCALLY MOUNTED INSTRUMENTRELAYCOMPUTER INPUT / OUTPUTSTATUS LIGHT, BEACONW = WHITE, R = RED, G = GREENPOWER RELAYSOFTWARE INTERLOCKRECORDERORIFICE,RESTRICTIONLIGH TINDICATEGLASSELEMENTALARMPASSIVEFUNCTIO NREADOUT ORINSTRUMENT SYMBOL LETTER IDENTIFICATION TABLESAFETYSPEEDSPOSITIONEVENT, STATEOR PRESENCETROUBLEWEIGHT FACTORWEIGHT ORFORCE (STRAIN)MULTIVARIABLETEMPERATUREGRAVITYS PECIFICZYXWFUWVTSGFAILURESTATUSRADIATION VACUUMPRESSURE,LEVELTIMEPOWERCURRENTHAND (MANUALLYINITIATED)RQPOLKJIHGTOTALIZEFLO WVOLTAGEDENSITYANALYSISVARIABLEINITIATIN GMEASURED ORFEDCASYMBOLDIFFERENTIALMODIFIERFIRST LETTERSWITCHACTUATORCONVERTRELAY,COMPUTE ,FAILUREVALVETRANSMITLOWHIGHFUNCTIONCONT ROLSUCCEEDING LETTERSOUTPUTM
solenoid 3-way solenoid 4-way solenoid 4-way dual solenoid air operated motor operated hand operated or handwheel diaphragm operated pneumatic piston pneumatic piston valve actuators: (single acting) (double acting) motor operated valve ... direct connected with diaphragm seal, piped (inaccessible) note 1, 3
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