SGB DLR-GS PMN Series, Документация

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OVERPRESSURE LEAK DETECTOR DLR-GS ..
10/09/2014
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(8) After functional testing has been carried out
– Close shut-off valve on the pressure reducer
– Close the canister shut-off valve.
– Remove the pressure reducer from the canister (attention: gas escapes until the pressure
reducer is depressurised).
– Fit the protection cap onto the canister.
4.7. Electrical connections
(1) Voltage supply: in accordance with the imprint on the
type plate.
(2) Hard-wired, i.e. no plug-in or switchable connections.
(3) The regulations of the electricity supply companies
must be satisfied
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.
(4) Terminal assignment: (see also SL-853 350)
1 / 2 Mains power supply
3 / 4 Not connected
5 / 6 External signal (in the event of an alarm, mains voltage is applied here - it is
switched off by pressing the "Acoustic alarm" button).
11 / 12 Potential-free contacts (open in the event of an alarm and in the event of a power
failure)
17 / 18 12 V is applied to these terminals if the pressure falls below the "Feed required"
point. Suitable for connecting a relay (12 V) for potential-free forwarding of this
signal.
21 / 22 Connected (to an internal sensor)
4.8. Example installation
Example installations are shown in the Appendix.
5. Commissioning / repairs
5.1. General notes
(1) Note the requirements in section 4.
(2) Flushing of the interstitial space with inert gas if the walls on the storage medium side allow
permeation.
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(3) If a leak detector is put into operation on a pipe (or fitting) which is already in operation,
then special protection measures need to be taken (e.g. checking that the leak detector
and/or interstitial space is free of gas). Further measures may be required depending upon
the local conditions and should be assessed by qualified personnel.
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For Germany: VDE regulations as well.
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For Germany: with double-walled pipes of this kind, DIBT requirements must also be met.