552 |
CHAPTER 7. INSTRUMENTATION DOCUMENTS |
7.5.9Process equipment
Pressure vessels |
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Centrifugal |
Positive-displacement |
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pump |
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pump |
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Dual-stage |
Rotary |
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Single-stage |
reciprocating |
screw |
Motor-driven fan |
reciprocating |
compressor |
compressor |
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compressor |
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M |
Motor-driven |
Turbogenerator |
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Turbocompressor |
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axial compressor |
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G |
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Compressor |
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Turbine |
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Mixer |
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Shell-and-tube |
Jacketed vessel |
Conveyor belt |
heat exchanger |
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M |
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7.5. INSTRUMENT AND PROCESS EQUIPMENT SYMBOLS |
553 |
7.5.10Functional diagram symbols
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PID controllers |
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PI controller |
D-PI controller |
PD-I controller |
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D |
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P |
D |
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P |
I |
D |
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K |
òò |
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ddt |
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I |
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P |
I |
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Manual adjust Manual transfer |
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Control valve |
Characterized |
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control valve |
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A |
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FCV |
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Automatic |
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Manual |
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Control valve |
Indicator |
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function |
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w/ positioner |
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I |
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FCV |
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Transmitter |
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Time delay |
Summer Square root |
Characterizer |
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S |
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f(x) |
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Analog (variable) signal |
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Discrete (on/off) signal |
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554 |
CHAPTER 7. INSTRUMENTATION DOCUMENTS |
7.5.11Single-line electrical diagram symbols
Fuse |
Fuse |
Circuit breaker |
Circuit breaker |
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(600 V or less) |
(> 600 V) |
(600 V or less) |
(> 600 V) |
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Disconnect |
Overload |
Draw-out |
Draw-out |
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heater |
circuit breaker |
circuit breaker |
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(600 V or less) |
(> 600 V) |
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Lightning |
Contactor |
Generator |
Motor |
arrestor |
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Transformer |
Transformer |
Variable |
Variable |
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(alternate symbol) |
transformer |
transformer |
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(alternate symbol) |
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SCR |
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VFD |
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Rectifier |
Inverter |
DC motor drive |
AC motor drive |
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7.5. INSTRUMENT AND PROCESS EQUIPMENT SYMBOLS |
555 |
V A W
Voltmeter Ammeter Wattmeter
cos θ |
var |
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Phase meter |
VAR meter |
Lamp |
kvarh
Hz
Frequency meter
kWh
Kilowatt-hour meter
KiloVAR-hour meter |
Current |
Potential |
Synchronization |
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transformer |
transformer |
meter |
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(CT) |
(PT) |
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