VACUUM LEAK DETECTOR
VLXE .. Ex M and VLXE .. Ex MMV
28/07/2020
- 12 -
e) Standing cylindrical tanks with double-layered floor made of metal
(e.g. according to DIN 4119)
- As above, but with leak protection lining (stiff or flexible)
- Vertical cylindrical tanks made of plastic with double-layered
floor
Usage limits:
None for density and diameter
f) Tanks according to a) to d) that operate with an inner overlay
pressure of up to 25 bar
Usage limits:
in line with the aforementioned points using a type
VLXE .. Ex MMV
3.5.2 Pipelines/tubes
In factory or on-site construction
Usage limits:
according to the Table in Chap. 3.5.1 under b) where
instead of the tank diameter the height between the low point of the
interstitial space and the node point is to be set.
- 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
- Pressure lines with feed pressure of up to 5 bar:
Version VLXE 230 Ex M to VLXE 570 Ex M
- Pressure lines with feed pressure of up to 25 bar:
Version VLXE 230 Ex MMV to VLXE 570 Ex MMV
- Pressure lines with feed pressure of up to 90 bar:
Version VLXE 230 Ex MMV to VLXE 570 Ex MMV, only in con-
junction with an additional pressure switch, combined with sole-
noid valve.
- In particular applications (single pipe, gradient to a point), the ver-
sion VLXE 34 Ex Mcan also be used.
- For Germany: with proof of usability from construction authority
3.5.3 Monitorable
fluids
Liquids hazardous to water with a flash point below 60°C (55°C for
Germany as per TRBS/TRGS), such as fuels. The following also ap-
plies:
- The materials used must be resistant to the liquids being moni-
tored.
- Water-polluting liquids, the (possible) explosive steam-air mixture
(also such ones that can arise through the stored/conveyed liquids
in contact with air, humidity, condensation or the materials used) of
which classes them in gas groups II A to II B and H
2
, as well as
temperature codes T1 to T4 such as gasoline, for example.
-
If different water-polluting liquids are transported in individual pipe-
lines and monitored with a leak detector these liquids or their mix-
ing must not have any hazardous effects on one another or cause
any chemical reactions.
Technical Data
Summary of Contents for VLXE Ex M Series
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