The instruments and sensors are identified by a
position number which is made up of a combina-
tion of letters and an identification number.
Measured or indicating variables
First letters:
DS Density switch
DT Density transmitter
E Electrical component
FS Flow switch
FT Flow transmitter
GT Gauging transmitter, index/load transmitter
LI Level indication, local
LS Level switch
LT Level transmitter
PDI Pressure difference indication, local
PDS Pressure difference switch
PDT Pressure difference transmitter
PI Pressure indication, local
PS Pressure switch
PT Pressure transmitter
ST Speed transmitter
TC Thermo couple (NiCrNi)
TE Temperature element (Pt 100)
TI Temperature indication, local
TS Temperature switch
TT Temperature transmitter
VS Viscosity switch
VT Viscosity transmitter
WI Vibration indication, local
WS Vibration switch
WT Vibration transmitter
XC Unclassified control
XS Unclassified switch
XT Unclassified transmitter
ZS Position switch (limit switch)
ZT Position transmitter (proximity sensor)
ZV Position valve (solenoid valve)
Location of measuring point
Ident. number; first two digits indicate the meas-
urement point and xx the serial number:
11xx Manoeuvring system
12xx Hydraulic power supply system (HPS)
13xx Hydraulic control oil system, separate oil
to HPS
14xx Combustion pressure supervision
15xx Top bracing pressure, stand alone type
16xx Exhaust Gas Recirculation (EGR)
20xx ECS to/from safety system
21xx ECS to/from remote control system
22xx ECS to/from alarm system
24xx ME ECS outputs
29xx Power supply units to alarm system
30xx ECS miscellaneous input/output
40xx Tacho/crankshaft position system
41xx Engine cylinder components
50xx VOC, supply system
51xx VOC, sealing oil system
52xx VOC, control oil system
53xx VOC, other related systems
54xx VOC, engine related components
60xx GI-ECS to Fuel Gas Supply System (FGSS)
61xx GI-ECS to Sealing Oil System
62xx GI-ECS to Control Air System
63xx GI-ECS to other GI related systems
64xx GI engine related components
66xx Selective Catalytic Reduction (SCR) related
component. Stand alone
80xx Fuel oil system
81xx Lubricating oil system
82xx Cylinder lubricating oil system
83xx Stuffing box drain system
84xx Cooling water systems, e.g. central, sea
and jacket cooling water
85xx Compressed air supply systems, e.g.
control and starting air
86xx Scavenge air system
87xx Exhaust gas system
88xx Miscellaneous functions, e.g. axial
vibration
90xx Project specific functions
Table 18.07.01a: Identification of instruments
Identification of Instruments
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