литература / Функциональные схемы автоматизации / ANSI_ISA 5.1 2009 - Instrumentation Symbols and Identification
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- 51 - |
ANSI/ISA-5.1-2009 |
Table 5.4.2 — Final control element actuator symbols
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.4
No |
Symbol |
Description |
(7)• Actuator with top-mounted handwheel.
12
(7)• Manual actuator.
13 |
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Hand actuator. |
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(7)• Electrohydraulic linear or rotary actuator.
14 |
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(7)• Actuator with manual actuated partial stroke test device.
15
(7)• Actuator with remote actuated partial stroke test device.
16 |
S |
(8)• Automatic reset on-off solenoid actuator.
17 |
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Non-latching on-off solenoid actuator. |
S |
(8)• Manual or remote reset on-off solenoid actuator.
18 |
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Latching on-off solenoid actuator. |
S |
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R |
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(8)• Manual and remote reset on-off solenoid actuator.
19 |
R |
S |
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Latching on-off solenoid actuator. |
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R |
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(9)• Spring or weight actuated relief or safety valve actuator.
20 |
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(9) |
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Pilot actuated relief or safety valve actuator. |
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21 |
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Pilot pressure sensing line deleted if sensing is internal. |
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//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
--`,,```,,,,````-`-`,,`,,`,`,,`---
Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
ANSI/ISA-5.1-2009 |
- 52 - |
Table 5.4.3 — Self-actuated final control element symbol
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.4.
No |
Symbol |
Description |
•Automatic flow regulator.
1 |
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XXX |
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XXX = FCV without indicator. |
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XXX = FICV with integral indicator. |
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(1) (2) |
FICV |
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Variable area flowmeter with integral manual adjusting valve. |
2 |
(a) |
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Instrument tag bubble required with (b). |
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(b) 
•Constant flow regulator.
3
FICV
•Flow sight glass.
4 |
FG |
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Type shall be noted if more than one type used. |
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•Generic flow restriction.
5 |
FO |
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Single stage orifice plate as shown. |
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Note required for multi-stage or capillary tube types. |
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Restriction orifice hole drilled in valve plug. |
6 |
FO |
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Tag number shall be omitted if valve is otherwise identified. |
•Level regulator.
7 |
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Ball float and mechanical linkage. |
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•Backpressure regulator.
8 |
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Internal pressure tap. |
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•Backpressure regulator.
9 |
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External pressure tap. |
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--`,,```,,,,````-`-`,,`,,`,`,,`---
Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
- 53 - |
ANSI/ISA-5.1-2009 |
Table 5.4.3 — Self-actuated final control element symbol
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.4.
---`,,`,,`,`,,`-`-`,,```,,,,````--
No |
Symbol |
Description |
•Pressure-reducing regulator.
10 |
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Internal pressure tap. |
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•Pressure-reducing regulator.
11 |
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External pressure tap. |
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•Differential pressure regulator.
12 |
• |
External pressure taps. |
•Differential pressure regulator.
13 |
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Internal pressure taps. |
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Pressure-reducing regulator w/ integral outlet pressure relief and pressure gauge. |
14 |
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PG |
Generic pressure safety valve. |
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15 |
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Pressure relief valve. |
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Generic vacuum safety valve. |
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16 |
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Vacuum relief valve. |
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Generic pressure - vacuum relief valve. |
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17 |
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Tank pressure - vacuum relief valve. |
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Pressure safety element. |
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18 |
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Pressure rupture disk. |
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Pressure relief. |
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Pressure safety element. |
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19 |
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Vacuum rupture disk. |
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Vacuum relief. |
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Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
ANSI/ISA-5.1-2009 |
- 54 - |
---`,,`,,`,`,,`-`-`,,```,,,,````--
Table 5.4.3 — Self-actuated final control element symbol
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.4.
No |
Symbol |
Description |
•Temperature regulator.
20 |
• |
Filled thermal system. |
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Thermal safety element. |
21 |
TANK |
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Fusible plug or disk. |
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TSE |
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•Generic moisture trap.
22 |
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Steam trap. |
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Note required for other trap types. |
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•Moisture trap with equalizing line.
23 |
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TANK |
T
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
- 55 - |
ANSI/ISA-5.1-2009 |
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\ |
---`,,`,,`,`,,`-`-`,,```,,,,````-- |
Table 5.4.4 — Control valve failure and de-energized position indications
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.4.
No |
Method A (1) (10) |
Method B (1) (10) |
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Definition |
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Fail to open position. |
1 |
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FO |
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Fail to closed position. |
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FC |
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Fail locked in last position. |
3 |
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FL |
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Fail at last position. |
4 |
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Drift open. |
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FL/DO |
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Fail at last position. |
5 |
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Drift closed. |
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FL/DC |
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Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
ANSI/ISA-5.1-2009 |
- 56 - |
Table 5.5 — Functional diagramming symbols
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.5.
No |
Symbol (1) (2) |
Description |
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Measuring, input, or readout device. |
1 |
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[*] |
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[*] = Instrument tag number. |
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Symbols from Table 5.2.1 may be used. |
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(3) (4) |
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Automatic single-mode controller. |
2 |
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(*) |
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(*) |
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(3) (4) |
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Automatic two-mode controller. |
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(*) |
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(*) |
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(*) |
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(3) (4) |
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Automatic three-mode controller. |
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(*) |
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(*) |
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(*) |
(*) |
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(3) (4) |
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Automatic signal processor. |
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(*) |
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(4)• Manual signal processor.
6 |
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(*) |
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(3) (4) |
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Final control element. |
7 |
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Control valve. |
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(*) |
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(3) (4) |
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Final control element with positioner. |
8 |
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Control valve with positioner. |
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(*) |
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--`,,```,,,,````-`-`,,`,,`,`,,`---
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
- 57 - |
ANSI/ISA-5.1-2009 |
Table 5.6 — Signal processing function block symbols
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.6.
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Function |
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Equation |
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Definition |
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No |
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Symbol (1) (2) |
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Graph |
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Summation |
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M = X1 + X2 …+ Xn |
• |
Output |
equals |
algebraic |
sum |
of |
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inputs. |
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Σ |
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Xn |
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Σ |
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X1 |
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Average |
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M = X1 + X2 …+ Xn /n |
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Output |
equals |
algebraic |
sum |
of |
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inputs divided by number of inputs. |
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Σ/n |
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Xn |
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t |
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Difference |
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M = X1 − X2 |
• |
Output |
equals |
algebraic |
differ- |
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ence of two inputs. |
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∆ |
X |
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X1 |
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∆ |
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Multiplication |
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M = X1 x X2 |
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Output |
equals |
product |
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inputs. |
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X1 |
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-- |
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-`-`,,```,,,,```` |
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X2 |
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---`,,`,,`,`,,` |
X |
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t1 |
t |
t1 |
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Copyright International Society of Automation |
|
Provided by IHS under license with ISA |
|
No reproduction or networking permitted without license from IHS |
Not for Resale |
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
ANSI/ISA-5.1-2009 |
- 58 - |
---`,,`,,`,`,,`-`-`,,```,,,,````--
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Table 5.6 — Signal processing function block symbols |
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Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.6. |
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No |
Function |
Equation |
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Definition |
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Symbol (1) (2) |
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Graph |
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Division |
M = X1 ÷ X2 |
• |
Output equals quotient |
of |
two |
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5 |
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inputs. |
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÷ |
X |
X1 |
M |
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X2 |
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÷ |
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t1 |
t |
t1 |
t |
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6 |
Exponential |
M = Xn |
• Output equals nth power of input. |
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Xn |
X |
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M |
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Xn |
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t |
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t |
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Root extraction |
M =n√X |
• Output equals nth root of input. |
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7 |
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• |
If ‘n’ omitted, square |
root |
is |
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assumed. |
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n√ |
X |
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M |
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n√ |
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t |
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Proportion |
M = KX or M = PX |
• Output proportional to input. |
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8 |
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• Replace ‘K’ or ‘P’ with ‘1:1’ for |
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(3) |
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volume boosters. |
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a) |
K |
b) |
P |
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• Replace ‘K’ or ‘P’ with ‘2:1’, ‘3:1’, |
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M |
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etc., for integer gains. |
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X |
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(3) |
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a) |
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K |
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b) |
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P |
t1 |
t |
t1 |
t |
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||||
Copyright International Society of Automation |
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Provided by IHS under license with ISA |
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No reproduction or networking permitted without license from IHS |
Not for Resale |
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
- 59 - |
ANSI/ISA-5.1-2009 |
Table 5.6 — Signal processing function block symbols
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.6.
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No |
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Function |
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Equation |
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Definition |
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Symbol (1) (2) |
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Graph |
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Reverse proportion |
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M = -KX or M = -PX |
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• |
Output |
inversely proportional to |
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9 |
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input. |
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(3) |
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• |
Replace ‘-K’ or ‘-P’ with ‘-1:1’ for |
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t1 |
t |
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volume boosters. |
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a) |
-K |
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b) |
-P |
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• |
Replace |
‘-K’ or ‘-P’ |
with |
‘-2:1’, |
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X |
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‘-3:1’, etc., for integer gains. |
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(3) |
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-K |
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a) |
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M |
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b) |
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-P |
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t1 |
t |
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Integral |
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M = (1/TI)ΙXdt |
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• |
Output varies with magnitude and |
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10 |
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time duration of input. |
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(3) |
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• |
Output |
proportional |
to |
time |
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a) |
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b) |
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integral of input. |
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∫ |
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I |
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• |
TI = Integral time constant. |
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X |
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M |
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(3) |
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a) |
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∫ |
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b) |
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I |
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t1 |
t2 |
t |
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t1 |
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t2 |
t |
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Derivative |
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M = TD (dx/dt) |
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• |
Output proportional to time rate of |
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11 |
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change of input. |
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(3) |
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• |
TD = derivative time constant. |
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b) |
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d/dt |
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D |
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X |
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M |
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(3) |
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a) |
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d/dt |
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∫ |
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b) |
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D |
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t1 |
t |
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t1 |
t |
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Unspecified function |
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M = ƒ(x) |
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• |
Output is a nonlinear or |
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12 |
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unspecified function of the input. |
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• |
Function defined in note or other |
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--`,,```,,,,````-`-`,,`,,`,`,,`--- |
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Copyright International Society of Automation |
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Provided by IHS under license with ISA |
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No reproduction or networking permitted without license from IHS |
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Not for Resale |
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//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\
ANSI/ISA-5.1-2009 |
- 60 - |
Table 5.6 — Signal processing function block symbols
Note: Numbers in parentheses refer to explanatory notes in Clause 5.3.6.
No |
Function |
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Equation |
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Definition |
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Symbol (1) (2) |
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Graph |
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Time function |
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M = Xƒ(t) |
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Output equals a nonlinear or |
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unspecified |
time function times |
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the input. |
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Output is a nonlinear or |
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unspecified time function. |
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Function defined in note or other |
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text. |
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ƒ(t) |
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t1 |
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14 |
Conversion |
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I = P, P = I, etc |
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Output signal type different from |
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output signal is on the right. |
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A = Analog H = Hydraulic |
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B = Binary |
I = Current |
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D = Digital |
O = Electromagnetic |
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E = Voltage |
P = Pneumatic |
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F = Frequency |
R = Resistance |
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High signal select |
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M = X1 for X1 >X2 |
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Output equals |
greater of 2 or |
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M = X2 for X1 ≤ X2 |
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more inputs. |
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> |
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X1 |
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X2 |
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t1 |
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t1 |
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M = X1 for X2 >X1 >X3 or X3 >X1 >X2 |
Output equals middle value of three or |
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16 |
Middle signal select |
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M = X2 for X1 >X2 >X3 or X3 >X2 >X1 |
more inputs. |
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M = X3 for X1 >X3 >X2 or X2 >X3 >X1 |
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X1 |
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X3 |
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Copyright International Society of Automation |
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Provided by IHS under license with ISA |
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No reproduction or networking permitted without license from IHS |
Not for Resale |
--`,,```,,,,````-`-`,,`,,`,`,,`---
//^:^^#^~^^"#@::"~^$:~@""#:$@^"*^~@~$"~~""^^:@^^:#^~~\\