Symbols and Standards: Instrument Abbreviation


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PRESSURE
 P : PRESSURE
 PI : PRESSURE INDICATOR
 PG : PRESSURE GAUGE
 PCV : PRESSURE CONTROL VALVE
 PT : PRESSURE TRANSMITTER
 PIT : PRESSURE INDICATING TRANSMITTER
 PIC : PRESSURE INDICATING CONTROLLER
 PDT : PRESSURE DIFFERENTIAL TRANSMITTER
 PRV : PRESSURE REDUCING VALVE
 PSV : PRESSURE SAFETY VALVE
 PS : PRESSURE SWITCH
 PSH : PRESSURE SWITCH HIGH
 PSL : PRESSURE SWITCH LOW
 PSHH : PRESSURE SWITCH HIGH HIGH
 PSLL : PRESSURE SWITCH LOW LOW
 PDS : PRESSURE DIFFERENTIAL SWITCH
 PDSH : PRESSURE DIFFERENTIAL SWITCH HIGH
 PDSL : PRESSURE DIFFERENTIAL SWITCH LOW
 PA : PRESSURE ALARM

TEMPERATURE
 T : TEMPERATURE
 TI : TEMPERATURE INDICATOR
 TW : THERMOWELL
 TM : THERMOMETER
 TE : TEMPERATURE ELEMENT
 RTD : RESISTANCE TEMPERATURE DETECTOR
 T/C : THERMOCOUPLE
 TT : TEMPERATURE TRANSMITTER
 TIC : TEMPERATURE INDICATING CONTROLLER
 TRC : TEMPERATURE RECORDER CONTROLLER
 TCV : TEMPERATURE CONTROL VALVE
 TS : TEMPERATURE SWITCH
 TSH : TEMPERATURE SWITCH HIGH
 TSL : TEMPERATURE SWITCH LOW
 TA : TEMPERATURE ALARM

FLOW
 F : FLOW
 FI : FLOW INDICATOR
 FG : FLOW GLASS / FLOW GAUGE
 FE : FLOW ELEMENT
 FIT : FLOW INDICATING TRANSMITTER
 FCV : FLOW CONTROL VALVE
 FIC : FLOW INDICATING CONTROLLER
 FS : FLOW SWITCH
 FY : FLOW CONVERTER
 FA : FLOW ALARM
 FR : FLOW RECORDER
 FRC : FLOW RECORDING CONTROLLER
LEVEL
 L : LEVEL
 LI : LEVEL INDICATOR
 LG : LEVEL GAUGE
 LIT : LEVEL INDICATING TRANSMITTER
 LCV : LEVEL CONTROL VALVE
 LDT : LEVEL DISPLACER TRANSMITTER
 LIC : LEVEL INDICATING CONTROLLER
 LRC : LEVEL RECORDING CONTROLLER
 LS : LEVEL SWITCH
 LSH : LEVEL SWITCH HIGH
 LSL : LEVEL SWITCH LOW
 LA : LEVEL ALARM
 RLT : RADAR LEVEL TRANSMITTER