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ISA codes for Process Instrumentation

ISA instrumentation codes and combinations

To understand instrumentation symbols appearing on process diagrams means understanding ANSI/ISAs S5.1-1984 (R 1992) Instrumentation symbols and identification standard.

Process Measurement

Element Type

Element

Transmitter

Indicator

Indicator controller

Controller

Ratio Controller

Recorder

  

Code

E

T

I

IC

C

FC

R

Analysis

A

AE

AT

AI

AIC

AC

AFC

AR

Conductivity

C

CE

CT

CI

CIC

CC

CFC

CR

Density

D

DE

DT

DI

DIC

DC

DFC

DR

Voltage

E

EE

ET

EI

EIC

EC

EFC

ER

Flow

F

FE

FT

FI

FIC

FC

FFC

FR

Dimension

G

GE

GT

GI

GIC

GC

GFC

GR

Hand

H

HE

HT

HI

HIC

HC

HFC

HR

Current

I

IE

IT

II

IIC

IC

IFC

IR

Time

K

KE

KT

KI

KIC

KC

KFC

KR

Level

L

LE

LT

LI

LIC

LC

LFC

LR

Humidity

M

ME

MT

MI

MIC

MC

MFC

MR

Power

N

NE

NT

NI

NIC

NC

NFC

NR

Pressure

P

PE

PT

PI

PIC

PC

PFC

PR

Delta Pressure

dP

dPE

dPT

dPI

dPIC

dPC

dPFC

dPR

Quantity

Q

QE

QT

OI

OIC

QC

QFC

QR

Radioactivity

R

RE

RT

RI

RIC

RC

RFC

RR

Speed

S

SE

ST

SI

SIC

SC

SFC

SR

Temperature

T

TE

TT

TI

TIC

TC

TFC

TR

Delta Temperature

dT

dTE

dTT

dTI

dTIC

dTC

dTFC

dTR

Viscosity

V

VE

VT

VI

VIC

VC

VFC

VR

Weight

W

WE

WT

WI

WIC

WC

WFC

WR

Vibration

Y

YE

YT

YI

YIC

YC

YFC

YR

Position

Z

ZE

ZT

ZI

ZIC

ZC

ZFC

ZR

Process Measurement

Element Type

Hand Switch

Hand Valve

Totalizer

Indicating Totalizer

Solenoid Valve

Calculation

Control Valve

  

Code

HS

HV

Q

IQ

XV

Y

V

Analysis

A

AHS

AHV

AQ

AIQ

AXV

AY

AV

Conductivity

C

CHS

CHV

CQ

CIQ

CXV

CY

CV

Density

D

DHS

DHV

DQ

DIQ

DXV

DY

DV

Voltage

E

EHS

EHV

EQ

EIQ

EXV

EY

EV

Flow

F

FHS

FHV

FQ

FIQ

FXV

FY

FV

Dimension

G

GHS

GHV

GQ

GIQ

GXV

GY

GV

Hand

H

HHS

HHV

HQ

HIQ

HXV

HY

HV

Current

I

IHS

IHV

IQ

IIQ

IXV

IY

IV

Time

K

KHS

KHV

KQ

KIQ

KXV

KY

KV

Level

L

LHS

LHV

LQ

LIQ

LXV

LY

LV

Humidity

M

MHS

MHV

MQ

MIQ

MXV

MY

MV

Power

N

NHS

NHV

NQ

NIQ

NXV

NY

NV

Pressure

P

PHS

PHV

PQ

PIQ

PXV

PY

PV

Delta Pressure

dP

dPHS

dPHV

dPQ

dPIQ

dPXV

dPY

dPV

Quantity

Q

QHS

QHV

QQ

QIQ

QXV

QY

QV

Radioactivity

R

RHS

RHV

RQ

RIQ

RXV

RY

RV

Speed

S

SHS

SHV

SQ

SIQ

SXV

SY

SV

Temperature

T

THS

THV

TQ

TIQ

TXV

TY

TV

Delta Temperature

dT

dTHS

dTHV

dTQ

dTIQ

dTXV

dTY

dTV

Viscosity

V

VHS

VHV

VQ

VIQ

VXV

VY

VV

Weight

W

WHS

WHV

WQ

WIQ

WXV

WY

WV

Vibration

Y

YHS

YHV

YQ

YIQ

YXV

YY

YV

Position

Z

ZHS

ZHV

ZQ

ZIQ

ZXV

ZY

ZV

 

Process Measurement

Element Type

Ratio Calculation

Switch Low

Switch High

Alarm Low

Alarm Low Low

Alarm High

Alarm High High

  

Code

FY

SL

SH

AL

ALL

AH

AHH

Analysis

A

AFY

ASL

ASH

AAL

AALL

AAH

AAHH

Conductivity

C

CFY

CSL

CSH

CAL

CALL

CAH

CAHH

Density

D

DFY

DSL

DSH

DAL

DALL

DAH

DAHH

Voltage

E

EFY

ESL

ESH

EAL

EALL

EAH

EAHH

Flow

F

FFY

FSL

FSH

FAL

FALL

FAH

FAHH

Dimension

G

GFY

GSL

GSH

GAL

GALL

GAH

GAHH

Hand

H

HFY

HSL

HSH

HAL

HALL

HAH

HAHH

Current

I

IFY

ISL

ISH

IAL

IALL

IAH

IAHH

Time

K

KFY

KSL

KSH

KAL

KALL

KAH

KAHH

Level

L

LFY

LSL

LSH

LAL

LALL

LAH

LAHH

Humidity

M

MFY

MSL

MSH

MAL

MALL

MAH

MAHH

Power

N

NFY

NSL

NSH

NAL

NALL

NAH

NAHH

Pressure

P

PFY

PSL

PSH

PAL

PALL

PAH

PAHH

Delta Pressure

dP

dPFY

dPSL

dPSH

dPAL

dPALL

dPAH

dPAHH

Quantity

Q

QFY

QSL

QSH

QAL

QALL

QAH

QAHH

Radioactivity

R

RFY

RSL

RSH

RAL

RALL

RAH

RAHH

Speed

S

SFY

SSL

SSH

SAL

SALL

SAH

SAHH

Temperature

T

TFY

TSL

TSH

TAL

TALL

TAH

TAHH

Delta Temperature

dT

dTFY

dTSL

dTSH

dTAL

dTALL

dTAH

dTAHH

Viscosity

V

VFY

VSL

VSH

VAL

VALL

VAH

VAHH

Weight

W

WFY

WSL

WSH

WAL

WALL

WAH

WAHH

Vibration

Y

YFY

YSL

YSH

YAL

YALL

YAH

YAHH

Position

Z

ZFY

ZSL

ZSH

ZAL

ZALL

ZAH

ZAHH

* source : http://www.engineeringtoolbox.com/isa-intrumentation-codes-d_415.html

   

출처: <http://sharpwork.pe.kr/bbs/board.php?folder=&bo_table=science&page=2&bbs_id=2018>

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