20/05/2020
VACUUM LEAK DETECTOR
VLR ..
and
VLR .. MV
- 11 -
3.4 Field of Application
3.4.1 Pipelines/tubes
In factory or on-site construction
o
Suction lines: The alarm vacuum shall be at least 30 mbar higher
than the max underpressure in the inner pipe at the high point of
the interstitial space
o
Pressure lines with feed pressures of up to 5 bar: Version VLR 330
to VLR 570
o
Pressure lines with feed pressures of up to 25 bar:
Version VLR 330 to VLR 570, each with solenoid valve
o
Pressure lines with feed pressures of up to 90 bar:
Version VLR 330 to VLR 570 with solenoid valve and only in con-
junction with an additional pressure switch
o
In particular applications (single pipe, downward gradient to the
low point of the interstitial space to which the suction line is also
connected), version VLR 34 can also be used (no H
max
).
o
For Germany: with proof of usability from construction authority
Usage limits:
Density of the stored
product
[kg/dm
3
]
330 410 500 570
0.8
3.8 4.8 6.0 6.9
0.9
3.4 4.3 5.3 6.1
1.0
3.1 3.9 4.8 5.5
1.1
2.8 3.5 4.4 5.0
1.2
2.6 3.2 4.0 4.6
1.3
2.4 3.0 3.7 4.2
1.4
2.2 2.8 3.4 3.9
1.5
2.0 2.6 3.2 3.7
1.6
1.9 2.4 3.0 3.4
1.7
1.8 2.3 2.8 3.2
1.8
1.7 2.2 2.7 3.1
1.9
1.6 2.0 2.5 2.9
A minimum of
density 1
is needed for
underground
systems.
Technical Data