فشار
P: Pressure
PI: Pressure Indicator
PG: Pressure Gauge
PCV: Pressure Control Valve
PT: Pressure Transmitter
PIT: Pressure Indicator Transmitter
PIC: Pressure Indicator 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
دما
T: Temperature
TI: Temperature Indicator
TW: Thermowell
TM: Thermometter
TE: Temperature Element
RTD: Resistance Temperature Detector
T/C: Thermocouple
TT: Temperature Transmitter
TIC: Temperature Indocator Controller
TRC: Temperature Recorder Controller
TCV: Temperature Control Valve
TS: Temperature Switch
TSH: Temperature Switch High
TSL: Temperature Switch Low
TA: Temperature Alarm
جریان
F: Flow
FI: Flow Indicator
FG: Flow Gauge
FE: Flow Element
FIT: Flow Indicator Transmitter
FCV: Flow Control Valve
FIC: Flow Indicator Controller
FS: Flow Switch
FY: Flow Converter
FA: Flow Alarm
FR: Flow Recorder
FRC: Flow Recording Controller
سطح
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
علایم عمومی
DCS : DISTRIBUTED CONTROL SYSTEM
SCADA : SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM
PLC : PROGRAMMABLE LOGIC CONTROLLER
HART : HIGHWAY ADDRESSABLE REMOTE TRANSDUCER
HHT : HAND HELD TERMINAL
SFC : SMART FIELD CONFIGURATOR
ESD : EMERGENCY SHUT DOWN
AOV : AIR OPERATED VALVE
MOV : MOTOR OPERATED VALVE
SV : SOLENOID VALVE
XVE : VIBRATION PROXIMITOR
XVT : VIBRATION TRANSMITTER
AE : ANALYZER
JB : JUNCTION BOX
ILD : INSTRUMENT LOOP DIAGRAM
P&ID : PIPING AND INSTRUMENT DIAGRAM
IIS : INSTRUMENT INSTALLATION SCHEDULE
TDR : TIME DELAY RELAY
SP : SET POINT
NC : NORMALLY CLOSED
NO : NORMALLY OPEN
MCC : MOTOR CONTROL CENTRE
IAS : INSTRUMENT AIR SUPPLY
IGS : INSTRUMENT GAS SUPPLY
ACFO : AIR TO CLOSE FAIL OPEN
AOFC : AIR TO OPEN FAIL CLOSE
FFA : FLAME FAILURE ALARM
P/I – P to I : PNEUMATIC TO CURRENT CONVERTER
I/P – I to P : CURRENT TO PNEUMATIC CONVERTER
PB : PUSH BUTTON
PID : PROPORTIONAL, INTEGRAL AND DERIVATIVE
E/H : ELECTRO HYDRAULIC ACTUATOR
BOV : BLOW DOWN VALVE
A/M : AUTO / MANUAL – ۲ POSITION SWITCH
ZS : POSITION SWITCH
HS : HAND SWITCH
