isa 5.1 symbols
TRANSCRIPT
28 ANSI/ISA-S5.1-1984 (R 1992)
6.2 Instrument line symbols
ALL LINES TO BE FINE IN RELATION TO PROCESS PIPING LINES.
ANSI/ISA-S5.1-1984 (R 1992) 29
6.3 General instrument or function symbols
30 ANSI/ISA-S5.1-1984 (R 1992)
6.3 General instrument or function symbols (contd.)
* It is not mandatory to show a common housing.
** These diamonds are approximately half the size of the larger ones.
*** For specific logic symbols, see ANI/ISA Standard S5.2.
13 14
19 20
16 17
15
18
21
6TE2584-23
INSTRUMENT WITHLONG TAG NUMBER
INSTRUMENTS SHARINGCOMMON HOUSING *
PILOTLIGHT
C12
PANEL MOUNTEDPATCHBOARD POINT 12
P
IR
**
*****
PURGE ORFLUSHING DEVICE
**
REST FORLATCH-TYPE ACTUATOR
DIAPHRAGMSEAL
UNDEFINEDINTERLOCK LOGIC
ANSI/ISA-S5.1-1984 (R 1992) 31
6.4 Control valve body symbols, damper symbols
1 2 3 4
8
1211
76
109
5
GENERAL SYMBOL ANGLE BUTTERFLY ROTARY VALVE
GLOBETHREE-WAY
DIAPHRAGM
FOUR-WAY
DAMPER OR LOUVER
Further information may be added adjacent to the body symbol either by note or code number.
32 ANSI/ISA-S5.1-1984 (R 1992)
6.5 Actuator symbols
ANSI/ISA-S5.1-1984 (R 1992) 33
6.5 Actuator symbols (contd.)
34 ANSI/ISA-S5.1-1984 (R 1992)
6.6 Symbols for self-actuated regulators, valves, and other devices
ANSI/ISA-S5.1-1984 (R 1992) 35
6.6 Symbols for self-actuated regulators, valves, and other devices (contd.)
36 ANSI/ISA-S5.1-1984 (R 1992)
6.6 Symbols for self-actuated regulators, valves, and other devices (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 37
6.7 Symbols for actuator action in event of actuat or power failure (shown typically for diaphragm-actuated control valve).
38 ANSI/ISA-S5.1-1984 (R 1992)
6.8 Primary element symbols
ANSI/ISA-S5.1-1984 (R 1992) 39
6.8 Primary element symbols (contd.)
40 ANSI/ISA-S5.1-1984 (R 1992)
6.8 Primary element symbols (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 41
6.8 Primary element symbols (contd.)
42 ANSI/ISA-S5.1-1984 (R 1992)
6.8 Primary element symbols (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 43
6.8 Primary element symbols (contd.)
44 ANSI/ISA-S5.1-1984 (R 1992)
6.8 Primary element symbols (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 45
6.8 Primary element symbols (contd.)
46 ANSI/ISA-S5.1-1984 (R 1992)
6.8 Primary element symbols (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 47
6.8 Primary element symbols (contd.)
48 ANSI/ISA-S5.1-1984 (R 1992)
6.9 Examples — functions
ANSI/ISA-S5.1-1984 (R 1992) 49
6.9 Examples — functions (contd.)
50 ANSI/ISA-S5.1-1984 (R 1992)
6.9 Examples — functions (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 51
6.9 Examples — functions (contd.)
52 ANSI/ISA-S5.1-1984 (R 1992)
6.9 Examples — functions (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 53
6.9 Examples — functions (contd.)
54 ANSI/ISA-S5.1-1984 (R 1992)
6.9 Examples — functions (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 55
6.9 Examples — functions (contd.)
56 ANSI/ISA-S5.1-1984 (R 1992)
6.10 Examples — miscellaneous combinations
FT400
PR500FY
FR401
TT300
PR500
HC300
FI402
FT
UU300
FC
FT
FIK403
M
LI
LIT
TSL301
TSL301
PSH501
PSH501
FIC404
FIC404
LT
1
PREFERRED METHODTO BE USED IF INTERLOCK IS
UNDEFINED OR COMPLEX. I-1 MAY BESUBSTITUTED FOR I TO REFER TO
INTERLOCK DETAIL NO. 1, TO BEDRAWN ELSEWHERE. THE OUTPUTS OFTSL-301 AND PSH-501 MAY ENTER THE
INTERLOCK BOX SEPARATELYIN
OPTIONAL METHODMAY BE USED IF RELAY EXISTS AND
ONE DESIRES TO SHOW IT
COMPLEX COMBUSTION CONTROL SYSTEM,UU-300, ADJUSTING
SET-POINT OF FLOW CONTROL SYSTEM
4 5
FLOW TRANSMITTER WITHEXTERNAL TEMPERATURE
COMPENSATION
FLOW RECORDER WITH PRESSUREPEN CONNECTED TO TAP OFDIFFERENTIAL-PRESSURE-
TYPE FLOW RECORDER
MANUAL LOADING STATIONWITHOUT OUTPUT GAGE AND
WITH FLOW RECEIVERINDICATOR
2 3
(UPSTREAMALTERNATIVE)
(DOWNSTREAMALTERNATIVE)
TANK
TANK
LEVEL TRANSMITTERWITH INTEGRAL
INDICATION
LEVEL TRANSMITTERWITH SEPARATE
INDICATION
SP
FLOW CONTROLLOOP THAT MAYBE BLOCKED BYINTERLOCK AC-
TUATED BYEITHER LOW TEM-
PERATURE ORHIGH PRESSURE
6
7
I
I
M
MFY
ANSI/ISA-S5.1-1984 (R 1992) 57
6.10 Examples — miscellaneous combinations (contd.)
58 ANSI/ISA-S5.1-1984 (R 1992)
6.10 Examples — miscellaneous combinations (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 59
6.10 Examples — miscellaneous combinations (contd.)
PR508
LSL602
LSL603
PSH511
HMS304
PR508
FRC407
FV407
PTPT508FT
FT
FRC407
27
ALTERNATIVE 1 ALTERNATIVE 2
28PR-507PEN 2
PR-508
PT-508
E EH H
FRC-407PEN 1
FV-407
FRC-407
29STOP
STANDBY ON-OFF
START STANDBY
LEAD-LAGLSHL605
LSHL604
LIMIT ON-OFF
TRIP
S S
S
PSHL510
PSH509
I-2
RESET
THE JUDICIOUS USE OF WORDS CAN CLARIFY DESIGN INTENT
INTERRELATED INSTRUMENTS WHOSE SYMBOLS ARE SCATTERED ON DIAGRAM. (A MULTI-POINT INSTRUMENT, SUCH AS A DATA LOGGER, THAT IS DESIGNATED WITH POINT
NUMBERS ON A DIAGRAM IS NOT EXPECTED TO HAVE THE SYMBOLS FOR THE VARIOUSPOINTS TIED OR REFERENCED TOGETHER). PEN ASSIGNMENTS NEED NOT BE SHOWN ON
A DIAGRAM IF IT IS THE USER'S PREFERENCE TO SHOW THEM IN AN INDEX.
60 ANSI/ISA-S5.1-1984 (R 1992)
6.10 Examples — miscellaneous combinations (contd.)
ZSL303
ZSL303
ZSL302
ZSL302
FQT411
FQT411
ZSL801
ZSL801
YIC1
YC1
YC1
YIC1
YC1
AIC
FI
103
410
30 31
32
ALTERNATIVE 1 ALTERNATIVE 2
33
SP
1:1
INDIVIDUAL INSTRUMENTS WITH INTEGRALFUNCTION BLOCKS: SQUARE ROOT
EXTRACTION, 1:1 FEED BOOST, FEEDFORWARD BIAS ON CONTROLLER OUTPUT,
SETPOINT OUTPUT SIGNAL
PROGRAMMABLE CONTROLLER SCHEME. ALTERNATIVE 2 ALLOWS MORE DEFINITION OFWHICH SIGNALS ARE ACCESSIBLE TO THE OPERATOR
ANSI/ISA-S5.1-1984 (R 1992) 61
6.11 Example — complex combinations
62 ANSI/ISA-S5.1-1984 (R 1992)
6.12 Example — degree of detail
1 TYPICAL SYMBOLISM FOR SIMPLIFIED DIAGRAMS
LC
A
HOT OIL
FC
F
A
PC
LC
FC
VACUUM
* SEE SECTION 4.4 FOR DISCUSSION
Simplified symbolism and abbreviated identification used to define theprincipal points of measurement and control interest.
ANSI/ISA-S5.1-1984 (R 1992) 63
6.12 Example — degree of detail (contd.)
2 TYPICAL SYMBOLISM FOR CONCEPTUAL DIAGRAMS
LT
ATAC
FT
F
V/F
X
f(t)
f(t)
X
FC
FT
ACI-Y
F/DD
F
AT
PT PC
V
F
V~BTU=KQ T∆
TDT
X
LC
FT
FT
FC
LC
B
FC
LT
HOT OIL
Q
D
VACUUM
* SEE SECTION 4.4 FOR DISCUSSION
D
Functionally oriented symbolism and abbreviated identification used todevelop control concepts without concern for specific hardware.
64 ANSI/ISA-S5.1-1984 (R 1992)
6.12 Example — degree of detail (contd.)
ANSI/ISA-S5.1-1984 (R 1992) 65
Index
Term Para. No.- A -
Accessibledefinition ..............................3graphic symbols ...................6.3
Actuatoractuator action...................... 6.7graphic symbols ...................6.5identification ......................... 5.1
Air Supplyidentification ......................... 6.2
Alarmdefinition............................... 3examples ..............................6.9identification ......................... 5.1
Analysisexamples ..............................6.8identification ......................... 5.1
Assignabledefinition............................... 3
Auto-Manual Station(Control Station)definition............................... 3identification ......................... 5.1
Auxiliary Locationgraphic symbol ..................... 6.3
Averaginggraphic symbol ..................... 5.4
- B -Balloon, Bubble
definition............................... 3graphic symbol ..................... 6.3
Behind-the-Paneldefinition............................... 3graphic symbol ..................... 6.3
Biasgraphic symbol ..................... 5.4
Term Para. No.Binary
definition...............................3graphic symbol .....................6.2
Board (Panel)definition...............................3identification .........................6.3
Burner, Combustionexample................................6.8identification .........................5.1
- C -Complex Combinations
example................................6.11Computer Function
graphic symbol .....................6.3Computing Device
definition...............................3example................................6.9function.................................5.4identification .........................5.1
Conceptual Diagramsexample................................6.12
Conductivity (see Analysis)example................................6.8
Configurabledefinition...............................3
Controllerdefinition...............................3
Controlexample................................6.9identification .........................5.1
Control Station(Auto-Manual Station)
definition...............................3example................................6.9identification .........................5.1
Control Valvedefinition...............................3