Priyatmadi
Teknik Elektro FT UGM
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
proses.
untuk
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mengoperasikan
sistem
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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 INSTRUMENT
First 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
PT
P - Pressure, vacuum
4301
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
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LETTER DESIGNATION
for instrument only
Succeeding 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
PT
R - Record
4301
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
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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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