Process Flow Diagram (PFD) and Piping and Instrumentation Diagram (P&ID)

PriyatmadiTeknik Elektro FT UGM

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What is a Process Flow Diagram?

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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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Apakah Piping and Instrumentation Diagram -

P&ID itu ?

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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&ID

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SIMBOL DALAM P&ID

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SIMBOL DALAM P&ID

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SIMBOL DALAM P&ID

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SIMBOL DALAM P&ID

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SIMBOL DALAM P&ID

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SIMBOL DALAM P&ID

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SIMBOL DALAM P&ID

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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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Standard Sinyal

• 3 – 15 psig

• 4 – 20 mA

• 1 – 5 V DC

• 0 – 10 V DC

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