Yogyakarta, 22 – 25 Juni 2010

Ir. Priyatmadi, MT

Process Flow Diagram (PID) dan

Piping & Instrumentation Diagram (P&ID)

PROCESS CONTROL PHILOSOPHY

PriyatmadiTeknik Elektro FT UGM

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What is a Process Flow Diagram?

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PFD adalah penggambaran proses industri dalam bentukdiagram menggunakan simbol seperti garis, lingkaran,segiempat dsb untuk menggambarkan hubungan antarasatu 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 sistemproses.

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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&ID

MEASURING INSTRUMENTFirst letter

Succeeding 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

PT

4301

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LETTER DESIGNATION

for instrument onlySucceeding letter

A - Alarm

B - User's choice

C - Control

D - Differential

E - Sensor (primary element)

F - Ration (fraction

G- Glass, viewing device

H - High

I - Indication

J – Scan

K - Time rate of change, Control

Station

L - Light , low

M – Momentary, medium

N- User's choice

O- Orifice, restriction

P - Point (test connection)

Q - Integrate, totalizer

R - 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

PT

4301

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LETTER DESIGNATION

example

PT

4321

FQI

4311

FIC

2301

TT

2321

FI

2371

LAL

2371

PSH

4321

LSH

4321

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Standard Sinyal

• 3 – 15 psig

• 4 – 20 mA

• 1 – 5 V DC

• 0 – 10 V DC

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