process flow diagram (pfd) and piping and instrumentation diagram (p&id)
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PFD adalah penggambaran proses industri dalam bentuk diagram menggunakan simbol seperti garis, lingkaran, segiempat dsb untuk menggambarkan hubungan antara satu peralatan dengan peralatan lain dalam proses itu.
PFD menunjukkan hubungan antara komponen-komponen utama didalam sistem. PFD juga memberikan tabel harga disain proses untuk komponen-komponen yang beroperasi pada mode yang berbeda seperti, minimum, normal, dan maksimum
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Piping and Instrumentation Diagram - P&ID, merupakan ilustrasi skematik dari hubungan fungsi antara piping, instrumentation dan system equipment components.
P&ID menunjukkan semua piping termasuk sequence physic dari sambungan, reducers, valves, equipment, instrumentation dan control interlocks.
P&ID dipergunakan untuk mengoperasikan sistem proses.
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SIMBOL DALAM P&IDMEASURING INSTRUMENT
First letterSucceeding letter
FIC55 disebut tagno
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LETTER DESIGNATION for instrument only
FIRST LETTER A - Analysis B - Burner, combustion C - User's choice D - User's choice E - Voltage F - Flow rate G- User's choice H - Hand I - Current (electrical) J - Power K - Time, time schedule L - Level M- User's choice
N- User's choice O- User's choice P - Pressure, vacuum Q - Quantity R - Radiation S - Speed, frequency T - Temperature U - Multivariable V - Vibration, mechanical analyses W - Weight, force X - Unclassified Y - Event, state or presence Z - Position, dimension
PT4301
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LETTER DESIGNATION for instrument only
Succeeding letter A - Alarm B - User's choice C - ControlD - DifferentialE - Sensor (primary element)F - Ration (fractionG- Glass, viewing device H - HighI - Indication J – ScanK - Time rate of change, Control
Station L - Light , lowM – Momentary, medium
N- User's choice O- Orifice, restriction P - Point (test connection) Q - Integrate, totalizerR - Record N- User's choice S – Switch, Safety T - Transmit U - Multifunction V - Valve, damper, louver W - Well X – Unclassified, X-axis Y - Relay, compute, convert , Y-axis Z - Driver, actuator, Z-axis
PT4301
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LETTER DESIGNATIONexample
PT4321
FQI4311
FIC2301
TT2321
FI2371
LAL2371
PSH4321
LSH4321
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