Technical details

Leak monitoring system

s

Positive pressure leak detector type DLR-G ...

Single-line system – horizontal and vertical layin

g

The necessary working pressure in the surveillance space is generated and maintained by pressure-regu-

lated topping-up from a stationary nitrogen pressure reservoir continuously connected to the surveillance

space (Operating mode C) or a mobile pressure reservoir which is only connected when putting into ope

-

ration or for function tests (Operating mode I). All permanently installed connections consist of 6 x 1 m

m

stainless steel piping or 8 x 1 mm PA hose with

flanged screw connections. A test valve must be installed at

one end of the single-line piping

.

The leak detectors must be adjusted to either Operating mode C or I, as well as for the differing transport

pressures of the medium pipes.

Laying: underground, surface and combined

LD

S

8.304

DLR-G ...

B

A

N

T

A

FT

Operating

mode C

V

N

P

K

PM

DM

VV

FAV

N2

Operating mode C

VN

screw connection top-up feed

VV

screw connection connection pipe

DM

pressure reducing valve (manufacturer BRUGG)

FAV

cut-off valve bottle

DS

pressure reservoir

AV

connection fitting

MA

measuring branch

PV

test valve

B

LED “Operation”, green

A

LED “Alarm”, red

N

LED “Top-up”, yellow

FT

fill button

TA

switch “acoustic alarm signals”

PK

test coupling

PM

test measuring gauge

Operating mode I

KN

coupling to top-up feed

DLR-G ..

.

P

V

AV

A

V

DS

M

A

B

A

N

TA

F

T

KN

PK

VV

Operating

mode I

D

M

FAV

D

S

N2

31.03.2026 Subject to technical changes. Page 21