1st letter Following letters
D : Density
E : Electric
F : Flow
L : Level
M ; Moisture
P : Pressure
S : Speed
T : Temperature
V : Viscosity
Z : Position
(ISO 3511/I-1977(E))
A : Alarm
D : Difference
E : Transducer
H : High
I : Indicating
L : Low
N : Closed
O : Open
S : Switching, shut down
T : Transmitter
X : Failure
C : Controlling
Z : Emergency/safety acting
The presence of a measuring device on a schematic dia-
gram does not necessarily indicate that the device is inclu-
ded in our scope of supply.
For each plant. The total extent of our supply will be stated
formally.
General
Specification of ID-no code for measuring signals/devices
1st digit 2nd digit
Refers to the main system to which the signal is related. Refers to the auxillary system to which the signal is rela-
ted.
1xxx : Engine x0xx : LT cooling water
2xxx : Gearbox x1xx : HT cooling water
3xxx : Propeller equipment x2xx : Oil systems (lub. oil, cooling oil, clutch oil, servo
oil)
4xxx : Automation equipment x3xx : Air systems (starting air, control air, charging air)
5xxx : Other equipment, not related to the propulsion
plant
x4xx : Fuel systems (fuel injection, fuel oil)
x5xx :
x6xx : Exhaust gas system
x7xx : Power control systems (start, stop, clutch, speed,
pitch)
x8xx : Sea water
x9xx : Miscellaneous (shaft, stern tube, sealing)
The last two digits are numeric ID for devices referring to the same main and aux. system.
Where dublicated measurements are carried out, i.e. multiple similar devices are measuring the same parameter,
the ID specification is followed by a letter (A, B, ...etc.), in order to be able to separate the signals from each other.
MAN Diesel & Turbo
I 00 25 0
Symbols for piping
1655279-1.1
Page 6 (10)
L27/38S, L16/24, L16/24S, L21/31, L21/31S, L23/30H, L23/30S, L23/30DF,
L28/32H, L28/32S, V28/32H, V28/32S, L27/38, L28/32DF
2015.11.17
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