Vega VEGAFLEX 81 User manual

Mounting instructions - Ship-
building
VEGAFLEX 81
Cargo tank (crude oil)
Waste oil tank
Service tanks (heavy oil, cooling water tank)
Ballast tanks (wing tanks)
Document ID: 39154

2
Contents
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Contents
1 General information
1.1 General instructions ......................................................................................................... 3
1.2 Type plate......................................................................................................................... 3
1.3 Measuring range .............................................................................................................. 5
2 Mounting, in general
2.1 Suitable housing versions ................................................................................................ 6
2.2 Installation on deck with protective cover ......................................................................... 6
2.3 Installation on deck without protective cover .................................................................... 7
3 Mounting - standard
3.1 Actuating variables........................................................................................................... 8
3.2 Distance to vessel installations....................................................................................... 11
3.3 Ways of fastening the probe ........................................................................................... 14
4 Mounting in a standpipe
4.1 Mounting - cable version ................................................................................................ 17
Editing status: 2013-06-11

3
1 General information
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
1 General information
1.1 General instructions
This mounting instructions manual provides the necessary guidelines
for correct mounting of level sensors VEGAFLEX 81 on ships.
The mounting instructions manual applies to the following sensors
with ship approval:
•VEGAFLEX 81 .CM…
•VEGAFLEX 81 .DM…
•VEGAFLEX 81 .XM…
Take note of the type label of the sensor. Only the abovementioned
versions meet the special requirements for use on ships. The type
label is located on the instrument housing.
To ensure proper functioning of the instrument, take careful note of all
the information in this mounting instructions manual.
Mount the VEGAFLEX 81 exactly according to the instructions in this
manual.
Read this manual before selecting the mounting position. Take note
of existing installations and discuss the mounting with the shipyard
technicians.
Make all necessary information on the mounting position and installa-
tion conditions available to the shipyard.
You can nd further information on technical data or setup in the
operating instructions of VEGAFLEX 81. This manual comes with the
instrument.
When using in hazardous areas take note of all relevant technical
data and special regulations of the Ex-specic safety instructions of
VEGAFLEX 81 as well as possible devices that supply power. The
approval documents are part of the scope of delivery for instruments
with Ex approval.
1.2 Type plate
The nameplate contains the most important data for identication and
use of the instrument:
Type plate

4
1 General information
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
2
1
13
14
15
16
12
11
5
3
6
4
7
8
9
10
Fig. 1: Layout of the type label (example)
1 Instrument type
2 Product code
3 Approvals
4 Power supply and signal output, electronics
5 Protection rating
6 Probe length
7 Process and ambient temperature, process pressure
8 Material, wetted parts
9 Hardware and software version
10 Order number
11 Serial number of the instrument
12 Symbol of the device protection class
13 ID numbers, instrument documentation
14 Reminder to observe the instrument documentation
15 NotiedauthorityforCEmarking
16 Approval directives

5
1 General information
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
1.3 Measuring range
2
4
5
3
2
4
5
3
11
Fig.2:Measuringranges-VEGAFLEX81
1 Reference plane
2 Probe length L
3 Measuring range (default setting refers to the measuring range in water)
4 Upper dead band (in this area no measurement is possible)
5 Lower dead band (in this area no measurement is possible)

6
2 Mounting, in general
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
2 Mounting, in general
2.1 Suitable housing versions
AB
C
Fig. 3: Areas on a ship - side view
A Ondeck
B Belowdeck
C Engineroom
Plastic housing Aluminium housing Stainless steel
housing (precision
casting)
On deck No No Ye s
Below
deck
Ye s No Ye s
Engine
room
Ye s No Ye s
Ta b.1:Suitablehousingsfordierentareasoftheship
2.2 Installation on deck with protective cover
Housing Protective cover
closed
Protective cover
vented
Plastic
Aluminium die-
casting
Stainless steel
housing 316L
(IP 68, 0.2 bar)
Cable gland for cable diameters of 7 … 12 mm. An additional seal for
cable diameters of 10 … 14 mm is attached.

7
2 Mounting, in general
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
2.3 Installation on deck without protective cover
132
Fig. 13: Adapter for protective hose
1 Installation by shipyard
2 Adapter for protective hose - M20 x 1.5 to M24 x 1.5
3 Housing stainless steel, precision casting 316L, 0.2 bar with adapter for
protective hose
M20 x 1,5
M24 x 1,5
Fig. 14: Adapter for protective hose - M20 x 1.5 to M24 x 1.5
Cable gland for cable diameters of 13 mm, additional seal for cable
diameters of 9 … 11 mm is attached.
Fig.15:Housingstainlesssteel,precisioncasting316LIP68,1barwithVEGA
cable outlet
Stainless steel housing IP 68, 1 bar with cable outlet (PUR) and capil-
laries for pressure transmitters.
Adapter for protective
hose
Stainless steel housing
IP 68, 1 bar

8
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
3 Mounting - standard
3.1 Actuating variables
General information
1
2
34
Fig.16:VEGAFLEX81-Mounting
1 Energyeld
2 Containerframe
3 Heating coil
4 Pump
High frequency microwave pulses are guided along a steel cable or
rod.
The microwave pulses generate an energy eld with a radius of ap-
proximately 300 mm (11.81 in) around the sensor cable.
Installations within this energy eld inuence the measurement.
Process tting
If possible, avoid vessel sockets. Mount the sensor ush to the vessel
ceiling.
If this is not possible, use short sockets with small diameter.

9
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
h
d
max level
max level
x
x
1
2
Fig. 17: Mounting options
1 Flush mounting
2 Socketmounting
x Upper dead band (no measurement possible in this area)
h Socketheight
d Socketdiameter
Keep in mind that a min. distance must be maintained below the refer-
ence plane - measurement is not possible here (dead band).
The value x states the max. upper value of the measuring range as
distance to the level. This value depends on the medium.
Medium x
Water 80 mm (3.15 in)
Oil, bitumen 150 mm (5.91 in)
Solvents 150 mm (5.91 in)
If a socket is required, you can nd the optimised dimensions d and h
in the following table.
d h
DN 50 … DN 150 150 mm (5.91 in)
DN 150 … DN 200 100 mm (3.94 in)

10
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Mounting details of the socket
<
10 mm
(0.39")
Fig.18:Mountingdetailsofthesocket

11
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Tank socket
<
100 mm
(3.94")
ø 300 - 600 mm
(11.81 - 23.62")
max level
x
1/3
1/21/2
2/3
Fig.19:Mountingonatanksocketø300…600mm(11.81…23.62in)
x Upper dead band (no measurement possible in this area)
3.2 Distance to vessel installations
Keep a min. distance to vessel installations or the vessel wall to avoid
adverse eects on the measurement. The probe must not touch
installations or the vessel wall during operation. If necessary, secure
the probe end.

12
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Distance to the vessel wall and to frame proles
≥ 300 mm
(11.81")
≥ 300 mm
(11.81") ≥ 300 mm (11.81")
Fig.20:Avoidinterferencefromthevesselwallandframeproles
1 Vessel wall
2 Frames,reinforcementproles,etc.

13
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Distances to cavities and lling streams
≥ 300 mm
(11.81")
≥ 300 mm
(11.81")
Fig.21:Avoidinterferencefromcavitiesandllingstreams
1 Cavity
2 Filling stream
Distances with strain relief
≥ 300 mm
(11.81")
1
2
3
Fig.22:Strainrelief-distancestoframeprolesonthevesselbottom
1 Frame
2 Sensor cable
3 Congurationofthestrainrelief,sideview
Keep a min. distance to heating coils in the vessel to avoid adverse
eects on the measurement.

14
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Distances to heating coils (top view)
≥ 300 mm
(11.81")
1
2
3
Fig. 23: Heating coils - top view
1 Heating coils
2 Bearing
3 Sensor cable
Distances to heating coils (side view)
≥ 300 mm
(11.81")
1
3
2
Fig. 24: Heating coils - side view
1 Heating coil
2 Sensor cable
3 Gravityweight
3.3 Ways of fastening the probe
The min. level min depends on the height of the mounting facility z
and the oset of the medium y.

15
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Strain relief - vertically
y
z
y
z
4
5
2
3
2
1
3
min level
min level
Fig. 25: Mounting versions vertically - gravity weight (left), cable loop (right)
1 Gravityweight
2 Spring
3 Tension bolt
4 Cableloop
5 Grommet
y Oset
z Height of the fastening arrangement
Strain relief - horizontal
zy
60 mm
(2.36")
1
23
456
min level
Fig. 26: Mounting version horizontal, side view
1 Pulley
2 Gravityweight
3 Tension bolt
4 Spring
5 Threaded rod for straining
6 Nut
y Oset
z Height of the fastening arrangement
Medium y
Water 10 mm (0.79 in)

16
3 Mounting - standard
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Medium y
Oil, bitumen 40 mm (3.15 in)
Solvents 40 mm (3.15 in)
Keep in mind that a min. distance must be maintained below the refer-
ence plane - measurement is not possible here (dead band).
The value y states the min. lower value of the measuring range. This
value depends on the medium.
Add the height of the mounting facility z and the oset of the medium
y, to calculate the total dead band.

17
4 Mounting in a standpipe
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
4 Mounting in a standpipe
4.1 Mounting - cable version
In narrow tanks or in case of a distance to vessel installations of less
than 300 mm (11.81 in), measurement in a standpipe is recom-
mended.
1 2 3
Fig. 27: Measurement in a standpipe
1 The sensor cable must not touch the vessel wall
2 Standpipe mounting with gravity weight and spring
3 Standpipemountingwithgravityweightandcenteringdisk
The sensor cable must be tightly stretched with a gravity weight or
spring. The measurement will not function if the sensor cable touches
the inner wall of the standpipe.

18
4 Mounting in a standpipe
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626
Mounting with gravity weight
ø 2 mm
(0.08")
ø 4 mm
(0.16")
ø 150 - 200 mm
(5.91 - 7.87")
zy
y
z
≥ 10 mm
(0.39")
3
A
B
1
27
4
5
6
min level
min level
Fig. 28: Mounting versions
1 Ventilation openings
2 Standpipe - vertically mounted - max. deviation 10 mm (0.4 in)
3 Gravityweight
4 Washer for centering and straining the sensor cable
5 Screw
6 Sensor cable - cannot be shortened
7 Washer for centering and straining the sensor cable
A Gravityweightwithsmallcenteringdisk
B Garvityweightwithbigcenteringdisk-cannotbeshortened
Medium y
Water 10 mm (0.79 in)
Oil, bitumen 40 mm (3.15 in)
Solvents 40 mm (3.15 in)
Keep in mind that a min. distance must be maintained below the refer-
ence plane - measurement is not possible here (dead band).
The value y states the min. lower value of the measuring range. This
value depends on the medium.
Add the height of the mounting facility z and the oset of the medium
y, to calculate the total range that cannot be measured.

19
Notes
VEGAFLEX 81 • Cargo tank (crude oil)
39154-EN-130626

Printing date:
VEGA Grieshaber KG
Am Hohenstein 113
77761 Schiltach
Germany
39154-EN-130626
All statements concerning scope of delivery, application, practical use and operat-
ing conditions of the sensors and processing systems correspond to the information
available at the time of printing.
Subject to change without prior notice
© VEGA Grieshaber KG, Schiltach/Germany 2013
Phone [phone]
Fax [phone]
E-mail: [email protected]
www.vega.com