SGB DL-4000 Series Operator's manual

Overpressure leak detector
DL – 4000
Z – 65.23 - 309
Documentation DL - 4000
SICHERUNGSGERÄTEBAU GMBH
Hofstraße 10
57076 Siegen
Art. no.: 603 402
Status: 11/2004

OVERPRESSURE LEAK DETECTOR DL - 4000
24/07/2003 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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Contents of the documentation
1 Technical description by SGB 13 pages
2. Drawings accompanying the technical description 4 pages
3. Technical data 1 page
4. Size of drying filter 1 page
5. dimension of the housing, measurement of the drill hole 1 page
6. Worksheet: pneumatic connections, AB - 820 500 2 pages
7. General Approval of the Building Inspection Authorities 5 pages

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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Table of contents Page
1 Object 2
2Type 2
3 Field of application 2
3.1 Tank 2
3.2 Material to be stored 2
3.3 Exclusions 2
4 Functional description 3
4.1 Minimum and maximum pressure values for the tanks 3
4.2 Switch values of the leak detector 3
4.3 Normal operation 3
4.4 Air or liquid leak 4
4.5 Drying of the air / drying filter 4
4.6 Overpressure valve 4
4.7 Number of tanks connected 4
5 Assembly instructions 5
5.1 Basic instructions 5
5.2 Personal protective equipment 5
5.3 Assembly of the leak detector 5
5.4 Assembly of the connecting pipes 5
5.5 Assembly of the drying filter 6
5.6 Electrical connection 6
5.7 Assembly examples 6
6 Putting into operation / service 6
7 Operating instructions 7
7.1 General instructions 7
7.2 Maintenance 8
7.3 Use for intended purpose 8
7.4 Functional test 8
7.5 Alarm 12
8 Dismantling 12
9 Marking 12
10 Abbreviations 13
Technical data TD-1
DRAWINGS
Assembly example for aboveground tanks M1 – 101 400-410
Assembly example for underground tanks M2 – 101 400-410
Circuit diagram DL-4000
(optional relay, wired in closed-circuit) SL – 851 400
Testing device DL-4000 P – 115 394

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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1. Object
Leak detector for double-wall tanks.
2. Type
DL-4000/500 for tanks with a testing pressure of 500 mbar in the interstitial space.
DL-4000/600 for tanks with a testing pressure of 600 mbar in the interstitial space.
3. Field of application
3.1. Tank (observe chapter 3.3)
3.1.1 Monitoring using Type DL-4000/600
•Underground and aboveground double-wall steel or plastic tanks without leak detection fluid
in the interstitial space, manufactured in plant or on site, the interstitial space of which is
suitable for connection to a DL-4000 according to the specifications in chapter 4.1.
•Underground and aboveground single-wall steel or plastic tanks fitted with pressure-
resistant leak-protection lining or leak-protection cladding, the interstitial space of which is
suitable for connection to a DL-4000 according to the specifications in chapter 4.1.
3.1.2 Monitoring using Type DL-4000/500
As described in 3.1.1, however only with underground tanks.
3.2. Material to be stored
Liquids hazardous to water
Any vapour-air mixtures produced through
•the stored liquid
•the stored liquid in connection with air / humidity or condensation
•the stored liquid in connection with components (materials) the liquid comes into con-
tact with
have to be able to be classified in explosion group IIA and II B and temperature class T1
to T3.
3.3. Exclusions
The leak detector must not be used if permeation into the interstitial space takes place on ac-
count of the material stored and the material composition of the inner tank wall, which can lead
to the formation of an explosive atmosphere in the interstitial space during normal operation.

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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4. Functional description
The overpressure leak detector DL-4000 monitors both walls of a tank for leaks. The monitoring
pressure is so high, that leaks below or above the liquid level (stored material and groundwater)
are indicated by a fall in pressure.
In order to build up pressure, external air is suctioned in by means of an integrated pump over a
drying filter and fed further to the interstitial spaces.
The drying filter dries the external air to a relative humidity of approx. 10%. This drying is nec-
essary to prevent the accumulation of humidity or condensation in the interstitial space. Used
drying filter fillings must be regenerated or replaced.
4.1. Minimum and maximum pressure values for the tanks
The following pressure values must be kept for the tanks.
Type Pressure of the material stored Pressure of the Testing pressure
on the base of the tank incl. groundwater on the of the interstitial
existing overlay pressure if app. base of the tank space
DL-4000/500 max. 300 mbar max. 300 mbar min. 500 mbar
(max. 4.35 psi) (max. 4.35 psi) (min. 7.25 psi)
DL-4000/600 max. 380 mbar max. 380 mbar min. 600 mbar
(max. 5.51 psi) (max. 5.51 psi) (min. 8.70 psi)
4.2. Switch values of the leak detector
The following pressure values have been pre-set in the factory:
Type Alarm Pump Overpr. safety device
ON OFF ON OFF OPEN1CL.
DL-4000/500 335+10/-5 mbar 365+25/-25 mbar 370+25/-25 mbar 400+10/-10 mbar 440+10/-25 mbar 395 mbar
(psi) (4.86+0.15/-0.07) (5.29+0.36/-0.35) (5.37+0.36/-0.36) (5.80+0.15/-0.15) (6.38+0.15/-0.36) (5.73)
DL-4000/600 415+10/-5 mbar 445+25/-25 mbar 470+25/-25 mbar 500+10/-10 mbar 540+10/-25 mbar 495 mbar
(psi) (6.02+0.15/-0.07) (6.45+0.36/-0.36) (6.82+0.36/-0.36) (7.25+0.15/-0.15) (7.83+0.15/-0.36) (7.18)
4.3. Normal operation
The overpressure leak detector is connected to the interstitial space (s) via the pressure and
measuring pipes. The overpressure produced is measured and controlled by a pressure switch.
When the operating pressure has been reached (Pump OFF) the pump is switched off. Due to
unavoidable leakages in the leak detector system the pressure slowly falls again. When the
switching value "Pump ON" is reached, the pump is switched back on and the operating pres-
sure built up again.
During normal operation the leak detector fluctuates between these two pressure values with
short running times and long standstill times depending on the degree of air-tightness and fluc-
tuations in temperature in the complete equipment.
1The value given is the reaction pressure, the opening pressure (blow-off pressure; measuring values
from chapter 7.4) is up to 30 mbar higher.

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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4.4. Air or liquid leak
If there is a leak below or above the level of the liquid or the groundwater, air escapes from the
interstitial space. The pressure falls until the overpressure pump is switched on to recreate the
operating pressure. If the flow volume of the air flowing through the leak is greater than the flow
capacity of the pump the pressure in the system will fall and the pump will work permanently.
An enlargement of the leak leads to a further fall in pressure until the alarm pressure has been
reached. The optical and acoustic systems are triggered.
4.5. Drying of the air / drying filter
The air pumped into the interstitial space is guided over a drying filter in the suction pipe. The
drying filter dries the air to approx. 10% relative humidity to prevent the accumulation of corro-
sion and condensation2in the interstitial space.
The drying filter has been designed for use for one year providing it is used for the intended
purpose and no additional fluctuations in temperature occur.
A used drying filter becomes colourless, having been orange at first. Regenerate or replace
used drying material.
4.6. Overpressure valve
The overpressure valve built into the pressure pipe protects the interstitial space from imper-
missibly high overpressure (test pressure being exceeded).
Impermissibly high overpressure can occur for example through:
•influences of temperature caused by environmental influences
•increases in temperature through hot filling (consult the manufacturer if appropriate)
4.7. Number of tanks connected (ONLY FOR UNDERGROUND TANKS)
The leak detector can be designed for the connection of several tanks due to the number of
exits on the distributor below the leak detector. The number of tanks to be connected depends
on the max. volume of the interstitial space. 4 m3must not be exceeded.
5. Assembly instructions
5.1. Basic instructions
(1) Assembly may only be carried out by a qualified company3.
2Accumulation of condensation in the interstitial space can lead to an impermissible increase in pressure
in the interstitial space.

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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(2) Heed relevant accident prevention regulations.
(3) Heed explosion protections measures.
5.2. Personal protective equipment
The parts listed here refer exclusively to safety during work on the equipment which could
cause an explosion.
If work is being carried out in areas where an explosive atmosphere is very likely, the following
pieces of equipment represent the minimum requirement:
•suitable clothing (danger of electro-static charge)
•suitable tools (according to EN 1127)
•a suitable gas warning device which has been calibrated for the steam-air mixture present
(work should only be carried out at a concentration 50% under the lowest explosion limit)4
5.3. Assembly of the leak detector
(1) Usually fitted on the wall with dowel plugs and screws.
(2) In a dry room or in a suitable protective box in the open.
(3) Assembly in the protective box: additional external signal or alarm forwarding via potential-
free contacts to a control room or similar.
(4) The leak detection unit must NOT be assembled in potentially explosive areas.
(5) The distance between the leak detector and the interstitial space must be kept as small as
possible.
5.4. Connecting pipes (between leak detector and tank)
(1) Metal (usually copper) or plastic pipes (hoses), pressure-resistant, weather and waterproof.
(2) At least 6 mm clearance, at least 1 mm wall thickness for pipes or 2 mm for hoses.
(3) Not longer than 50 m, if this is not possible then the cross-section of the pipe/hose must be
enlarged using appropriate transition pieces.
(4) Colour marking: Measuring line: red
Pressure line: white (or clear)
(5) The cross-section of the pipe must remain intact, indentation and bending5are not allowed.
(6) Plastic pipes/hoses laid underground or above ground outside must be in a protective outer
pipe.
3For Germany: Qualified company according to § 19l WHG, who has proved its qualification for the as-
sembly of leak detector systems incl. TRbF 180 / 280 no. 1.7.
4Other percentages could be valid depending on country-specific directives.
5If necessary, customary fittings (set bending radii) must be used for the plastic pipes

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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(7) Seal the protective pipe gastight.
(8) Avoid electrostatic charge (e.g. when introducing and pulling through pipes).
(9) For details about the connection technology refer to worksheet AB-820 500
5.5. Assembly of the drying filter
(1) As near to the leak detector as possible. If the leak detector is mounted in a protective box,
the drying filter can either be mounted in the protective case or outside.
(2) Horizontal or vertical with suction aperture downwards, using included assembly material.
(3) Connect the drying filter and the suction fitting of the leak detector using a PVC-hose (or
similar).
5.6. Electrical connection
(1) Voltage supply according to information on type plate
(2) Firmly laid i.e. no plug or switch connections.
(3) The regulations of the electric supply company must be heeded 6.
(4) Terminal connection: see Technical Data sheet
5.7. Assembly examples
Assembly examples are given in the appendix.
6. Putting into operation / service
(1) The instructions given in chapter 5 must also be heeded here.
(2) Should a leak detector be put into operation on a tank which has already been filled, spe-
cial protective measures must be taken (e.g. check there is no gas in the leak detector and
/ or interstitial space). Further measures can depend on local conditions and must be
evaluated by the operating staff.
(3) Once the pneumatic connection has been made, make the electrical connection.
(4) Make sure the "in operation" and "alarm" lamps are lit up and the acoustic alarm is working.
Then switch the "acoustic alarm" switch off.
(5) Connect test cock to the test measuring gauge in position "III".
(6) The operating pressure shown in the table on page 3 is to be applied to the leak detector
system. (Use the assembly pump with a sufficiently large drying filter! or nitrogen pressure
store)
6For Germany: also VDE regulations

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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Build up the pressure using the assembly pump via the pressure line, never via the test
cock of the leak detector.
Note: should the pressure not build up with the assembly pump connected, the leak must
be located and eliminated (if necessary check the assembly pump for feed capacity or
pressure reducer for the correct setting).
(7) Once the leak detector has reached operating pressure (pump in the leak detector switches
off), connect the pressure line again, set test cock to position "I", remove pressure meas-
uring gauge.
(8) Functional test according to chapter 7.4.
7. Operating instructions
7.1. General instructions
(1) If the leak detector system is assembled tightly and correctly then it can be assumed that
the leak detector is working in the range of control.
(2) If the pump switches itself on very often or permanently, this is an indication of a leakage
which must be eliminated within a reasonable period of time.
(3) In the case of an alarm there is always either a big leak or a fault. The cause must be es-
tablished quickly and the problem eliminated.
(4) The operator must check at regular intervals that the "in operation" lamp is working.
(5) If the filling in the filter changes colour from orange to colourless it must be replaced or re-
generated.
(6) The leak detector must be disconnected from the mains for any repair work.
(7) Current interruptions are indicated by the "in operation" lamp going out. The potential-free
relay contacts switch.
7.2. Maintenance
(1) Maintenance work and functional tests may only be carried out by qualified persons 7.
(2) The drying filter must be checked by the owner-operator at regular intervals8. If the colour
has changed from orange to colourless, the filling in the filter must be replaced or regener-
ated.
(3) The leak detector must be checked once every year for functional and operational safety.
(4) The extent of the annual tests is described in chapter 7.4.
(5) It must also be ensured that the conditions described in chapter 5 are being observed.
7For Germany: qualified knowledge in the area of assembly and service of leak detection systems or
under the responsibility of a qualified person, according to current regulations,
8An interval of at least 2 months is recommended.

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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7.3. Use for intended purpose
•Underground double-wall tanks, the side of the wall coming into contact with the stored ma-
terial must be impermeable to substances which could produce potentially explosive va-
pours.
•Depressurised tank or liquid and overlay pressure must not exceed the max. pressure on
the base of the tank
•Tank must be grounded according to valid regulations9
•Leak detector system must be airtight according to the table in chapter Fehler! Ver-
weisquelle konnte nicht gefunden werden. of this documentation
•Leak detector must be assembled outside the potentially explosive area
•Ducts for the pneumatic hoses must be sealed airtight.
•Leak detector (electric) must not be connected so that it can switch off.
7.4. Functional test
Test of the functional and operating safety must be carried out after
•every start up
•stipulations of chapter 7.2 in the time intervals given there10
•every case of trouble-shooting
7.4.1 Extent of the test
(1) If necessary, discuss the tasks to be carried out with the person responsible on-spot.
(2) Heed the safety instructions regarding contact with the stored goods present.
(3) Regenerate or replace the filling in the filter.
(4) Check the through connections in the interstitial space (chapter 7.4.2)
(5) Test the switching values using the testing device (chapter 7.4.3), alternatively no. (6)
(6) Test the switching values without using the testing device (chapter 7.4.4), alternatively no.
(5)
(7) Check the overpressure valve using the testing device (chapter 7.4.5), alternatively no. (8)
(8) Check the overpressure valve without using the testing device (chapter 7.4.6), alternatively
no. (7)
(9) Check air-tightness (chapter 7.4.7)
(10) Create operating conditions (chapter 7.4.8)
(11) A qualified person must fill out a test report confirming function and operational safety.
9For Germany: e.g. EN 1127
10 For Germany: regional-specific legal regulations must also be taken into account (e.g. VAwS)

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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7.4.2 Checking the through connections of the interstitial space
If several interstitial spaces are connected, each individual interstitial space must be checked
for through connections:
(1) If several tanks are connected via a distributor, close all the shut-off cocks on the distribu-
tors.
(2) Connect the measuring gauge to the test cock, set test cock to testing position "III" (see
M1-101 400-410)
(3) Open the Venting device 22.
(4) Open the shut-off cocks of the first (following) tanks (measuring and pressure line in pairs).
(5) Determine drop in pressure on the measuring gauge. In case there is no drop in pressure,
establish the cause and eliminate it.
(6) Close the shut-off cocks opened under item (4).
(7) Repeat items (5) to (7) with each further tank.
(8) Close the Venting device; test cock in position "I"; remove measuring gauge.
(9) Open all the shut-off cocks on the distributor which have a tank connected.
7.4.3 Testing the switching values using the testing device
(1) If several tanks are connected via a distributor, close all the shut-off cocks on the distribu-
tor.
(2) Connect the testing device: on the pressure side by screwing the Venting device apart
(close pressure line), on the measuring side on the test cock, position "III" (cf. P-115 394)
(3) Connect the test pressure gauge to the testing device
(4) Close the needle valve (testing device), the pressure is built up to operating pressure.
(5) Ventilation via needle valve, establish the switching values "Pump ON" and "Alarm ON"
(optical and acoustic alarm) and note the values.
(6) Close the needle valve and establish the switching values "Alarm OFF" and "Pump OFF".
(Sometimes it may be necessary to open the needle valve a little so that a slow increase in
pressure takes place.)
(7) Set test cock to position "I"; connect the pressure line to the leak detector; remove the test
pressure gauge.
(8) Open all the shut-off cocks on the distributor which have a tank connected.
7.4.4 Testing the switching values without a testing device
(1) If several tanks are connected via a distributor, close all the shut-off cocks on the distributor
except the cocks on the tank with the smallest volume.
(2) Connect test pressure gauge to the test cock, position "III".
(3) Ventilate using Venting device, establish the switching values "Pump ON" and "Alarm ON"
(with optical and acoustic alarm), note the values.

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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(4) Close the Venting device and establish the switching values "Alarm OFF" and "Pump OFF",
note the values.
(5) Test cock in position "I", remove the test pressure gauge.
(6) Open all the test cocks on the distributor which have a tank connected.
7.4.5 Checking the overpressure valve using the testing device
(1) If several tanks are connected via a distributor, close all the shut-off cocks on the distribu-
tor.
(2) Connect the test pressure gauge: on the pressure side by screwing the Venting device
apart (close pressure line to the tank), on the measuring side on the test cock, position "II".
(3) Open the needle valve until the pump starts to run.
(4) Set test cock to position "IV"
(5) Close the needle valve and establish the opening pressure11 of the overpressure valve,
note the value.
(6) Set test cock to position "III" (pump switches off).
(7) Establish the closing pressure of the overpressure valve (no further drop in pressure), note
the value.
(8) Set test cock to position "I"; screw the Venting device together below the leak detector;
remove the test pressure gauge.
(9) Open all the test cocks on the distributor which have a tank connected.
7.4.6 Checking the overpressure device without testing device
(1) If several tanks are connected via a distributor, close all the shut-off cocks on the distributor
except the cocks on the tank with the smallest volume.
(2) Set test cock to position "II", (pressure switch is ventilated). pump switches on and the
alarm is triggered.
(3) Connect the test pressure gauge to the test cock, then turn the test cock clockwise through
90° into the testing position "IV" (pressure switch is "blinded", i.e. pump is not switched off).
(4) Wait for the opening pressure11 of the overpressure valve (note the value), should the test
pressure of the interstitial space reach 500 mbar (DL-4000/500) or 600 mbar (DL-
4000/600) during this process, the test must be aborted immediately, the pressure
reduced and the overpressure valve replaced.
(5) After the opening pressure has been reached (no further increase in pressure), set the test
cock to position "III".
(6) The pump switches off, establish closing pressure of the overpressure valve12, note the
value.
11 In the switching values table the reaction pressure of the overpressure valve is given, the (measured)
opening pressure can be up to 30 mbar higher

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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(7) Set the test cock to position "I", remove the test pressure gauge.
(8) Open all the test cocks on the distributor which have a tank connected.
7.4.7 Testing the air-tightness
(1) Check that all the shut-off cocks with tanks connected are open.
(2) Connect the test pressure gauge to the test cock, position "III".
(3) Once the pressure has been equalised, the air-tightness test can begin. It is to be evalu-
ated as positive if the values remain within those given in the following table.
Volume of interstitial space in litres Max. 1 mbar (0.015 psi) fall in pres-
sure in
250 15 minutes
500 30 minutes
1000 1.0 hour
1500 1.5 hours
2000 2.0 hours
2500 2.5 hours
3000 3.0 hours
3500 3.5 hours
4000 4.0 hours
(4) To determine any leaks in the tanks or in the connecting lines it is recommended to subject
each separate interstitial space to a test for air-tightness. To do this, simply open only the
shut-off cocks of the tank concerned, closing all the others.
(5) Set test cock to position "I", remove the test pressure gauge.
7.4.8 Establishing the operating condition
(1) Seal the housing and the "acoustic alarm" switch.
(2) Shut-off cocks for every connected tank must be in the "open" position.
7.5. Alarm
(1) In case of alarm the red signal lamp 1 lights up red and the acoustic signal 69 sounds.
12 If the pump should switch on before the closing pressure is reached the cause must be determined and
eliminated.

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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(2) Remove the lead on the "acoustic alarm" switch, turn off the acoustic alarm and inform a
qualified company immediately.
(3) The expert from the qualified company or the operator must establish why the alarm was
triggered, eliminate the problem and then check that the leak detection system is function-
ing correctly as described in section 7.4.
8. Dismantling
Special attention must be paid to the following points when dismantling equipment which could
be potentially explosive:
•Check there is no gas around before and during work.
•Close openings through which an explosive atmosphere can escape absolutely gastight.
•Do not carry out dismantling work with tools which cause sparks (saw, parting-off grinder...).
If it should be unavoidable, pay particular attention to EN 1127.
•Avoid electro-static charge (e.g. caused by rubbing plastic components or wearing unsuit-
able working clothes).
•Dispose of contaminated components (possible gas evolution) properly.
9. Marking
•Electrical data
•Serial number
•Type description
•Date of manufacture (month / year)
•Manufacturer's mark
•Statutory marks
•Pressure and measuring lines can be connected to areas requiring category 3 (Group II (G))
devices.
10.Abbreviations
01 Signal lamp "alarm", red
02 Shut-off cock
09 Signal lamp "in operation", green
13 Pressure line
17 Overpressure pump
22 Venting device
30 Housing
41 Alarm switch in 54
42 Pump switch in 54
43 Measuring line
50 Test cock
54 Overpressure switch

OVERPRESSURE LEAK DETECTOR DL-4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
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59 Relay (optionally available)
61 Reflux barrier with filter
69 Buzzer
70 Overpressure valve
71 "Acoustic alarm" switch
72 Drying filter
73 Interstitial space
84 Test tank 1 litre
85 Test muff for pressure gauge

230 V / 50 Hz Ex
Ex
17 30 61
50
72
73
43
22
13
50 50 5050
54
69
71
70 01
09
I II III IV
06-11-2000
M1 - 101 400-410

Ex
Ex
Ex
73 73 73
230 V / 50 Hz
17 30
50
02
43
22
13
54
69
71
70 01
09
72
/
06-11-2000
M2 - 101 400-410
61

a13
4 5
2 3
b14
7 8
59
69
01
17
09
41 42
71
08-11-2000
SL - 851 400

22
84
10
10
85
50
85
22
52
98
98
50
0
Kl. 1,0
09-11-2000
P - 115 394

OVERPRESSURE LEAK DETECTOR DL – 4000
27/11/2001 Ihr Partner für Leckanzeigetechnik Sicherungsgerätebau GmbH, Siegen
- TD-1 -
Technical data
1. Electrical data (voltage version: see type plate!)
Electrical supply (without external signal) 230 V – 50 Hz – 60 W
115 V – 60 Hz – 60 W
24 V (=) - 25 W
12 V (=) - 25 W
Switch contact load, terminal strips AS max. 50 VA
Switch contact load, potential-free contacts max.: 230 V – 50 Hz – 8 A
min.: 5 V – 5mA
External fuse of the leak detector max. 10 A
Overvoltage category 2
1.1. Terminal assignment ~
2 Phase
3 Neutral
4 & 5 External signal (voltage in case of alarm)
7 & 8 Potential-free contacts, contact open in case of alarm (and power failure)
1.2. Terminal assignment =
2 Plus +
3 Minus -
4 & 5 External signal (voltage in case of alarm)
7 & 8 Potential-free contacts, contact open in case of alarm (and power failure)
2. Pneumatic data (requirements concerning the test measuring gauge)
Nominal size mind. 100
Accuracy class mind. 1.6
Scale end value 600 mbar