06/08/2020
PRESSURE LEAK DETECTOR
DLR-GS ..
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5.3 Selecting the Pressure Gas Bottle and the Pressure Reducer
(1) The pressure reducer must have an integrated overpressure
valve.
(2) The range of settings for the pressure reducer to be used must
be selected in correspondence with the application or the pres-
sure to be set. (see section 3.3).
(3) The maximum pressure setting on the pressure reducer should
not exceed the test pressure for the interstitial space
(SGB recommendation).
5.4 Setting up the Pressure Gas Bottle and Mounting the Pressure Reducer
(1) Set up and secure pressure gas bottle, e.g. using a bracket and
safety chain intended for this purpose.
(2) Close safety chain.
(3) Remove protective cover and mount pressure reducer to bottle.
(4) Close shut-off valve on the pressure reducer.
5.5 Pneumatic Connection Lines, Requirements
Pressure resistance of the metal (generally Cu) or plastic pipes
must at least correspond with the test pressure in the interstitial
space. Also applies to fittings and screwed connections. Note tem-
perature range, especially when using plastic.
Inside clearance
at least 4 mm with inert gas as leak detection medium
at least 6 mm with air as leak detection medium
50 m should not be significantly exceeded, but if this happens: In-
stall pipe with greater inside clearance using transition pieces.
The full cross section must be maintained. Do not push in or bend
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.
Install metal or plastic pipes underground or plastic pipes above-
ground outdoors in protective pipes.
Seal the protective pipe gas-tight and protect from moisture.
Avoid build-up of electrostatic charges (e.g. during pulling of lines).
5.6 Completing Pneumatic Connections
5.6.1 Between pressure reducer and leak detector
(1) Select suitable test equipment to connect the pressure re-
ducer to the leak detector. Recommendation: Use the test
equipment SGB item no.: 115520
(2) Mount the test equipment with pressure reducer at the pres-
sure gas bottle.
(3) Connect the test equipment to the leak detector.
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If necessary, install commercial fittings for plastic pipes (specified bending radii).
Mounting