SGB VL 330 Installation and operating instructions

Leak detection technology
For a clean and protected environment
Sold by: SGB Sicherungsgerätebau GmbH Tel.: + 49 / (0) 271 / 48964-0
Hofstr. 10 D-57076 Siegen Fax: + 49 / (0) 271 / 48964-6
Postfach: 21 07 41 D-57031 Siegen http//www.sgb.de
E-mail:[email protected]
Underpressure leak detector VL 330
Leak detection system to detect and indicate
leaks in double-walled tanks.
Every leak in one of the walls will be indicated by
an optical and audible alarm before liquid enters
the environment.
(Class I-system in accordance to the European
standard EN 13 160)
Liquids to be monitored:
Water polluting liquids :
•with a flash point > 55° Celsius; e.g. Diesel,
heating oil)
•specific chemicals in accordance to chemical
resistance of the leak detector. Different materials
to realise chemical resistance are available.
Approved for the use together with:
•double-walled horizontal tanks (e.g. EN 12285)
•single-walled horizontal or rectangular tanks
equipped with a lining (e.g. DIN 6625 or similar)
•double-walled ball shaped tanks
•upright standing tanks (e.g. DIN 6618/2)
Approvals:
•Germany: Z -65.22 - 389
Technical data:
type alarm
underpressure operational underpressure
VL 330 >330 mbar
(> 4.79 psi) 450 mbar (6.53 psi)
VL 330 P in a protection box
Complete set including for all necessary
installation equipment
Installation kit
for the tank
triple condensate
trap
UK Distributor
t: [phone]
f: [phone]
[e-mail]
www.orangecounty.co.uk

Leak detection technology
For a clean and protected environment
Underpressure leak detector VL 330
Subject to changes. Photos and SGB Sicherungsgerätebau GmbH Tel.: + 49 / (0) 271 / 48964-0
dimensions ar not binding for the Hofstr. 10 D-57076 Siegen Fax: + 49 / (0) 271 / 48964-6
extend of delivery. Postfach: 21 07 41 D-57031 Siegen http//www.sgb.de
Germany E-mail: [email protected]
Monitoring principle:
The pump in the leak detector creates a
operational underpressure in the interstitial space.
Any minor unavoidable untightness is
compensated by the system automatically.
In case of a leak, air, groundwater or product is
sucked into the interstitial space.
If the volume flow of air entering the interstitial
space is higher than the limited volume flow of the
vacuum pump, the pressure will rise to the alarm
underpressure.
Groundwater or stored product is sucked into the
interstitial space. When the interstitial space is
filled up, the liquid enters the liquid stop valve,
which closes then. No further underpressure can
be produced. Some more liquid will be sucked
into the measuring line, causing a rise in pressure
to the alarm underpressure. The optical and
audible alarm is released.
Installation advice:
The leak detector shall not be installed in
potentionally explosive atmosphere.
Outside closed and dry rooms, the leak detector
VL 330 P will realise the required weather
protection.
Coloured, chemical resistant, flexible or rigid tubes
are to be used as a connection between leak
detector and interstitial space.
Condensate traps are to be installed in all low
points of the connection lines, if applicable.
Three way cocks in the suction- and measuring
line on the leak detector guarantee a quick and
easy function check.
Dry relay contacts for alarm transmitting are
included as standard.
When operating, installing and commissioning the
leak detector VL 330, the conditions laid down in
the approvals for the leak detector, tanks and
linings are to be observed.
All works shall be carried out by a qualified person.
VL 330 PM
P
VL 330
Double-walled
vertical steel tank
with suction line to
the low point
Condenate trap
Interstitial space with
underpressure
Double-walled steel tank
underground
Liquid stop valve
Suction line
Exhaust line
Measuring line