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OVERPRESSURE – LEAK DETECTOR   DL .. 

 

3.3  Air or liquid leak 

If a leak occurs below or above the liquid level or ground water, leak detection medium escapes 
from the interstitial space. Pressure falls until the pressure generator is switched on to restore 
the operating pressure. If the volume flow escaping out of the leak is greater than the refill 
intake from the pressure generator, then the pressure in the system falls although the pressure 
generator is activated. 

Enlargement of the leak causes a further loss in pressure until the alarm pressure is reached. 
The visual and audible alarm is triggered. 

3.4  Air drying / dry filter (DL . ONLY) 

The air fed to the interstitial space passes through a dry filter in the suction line. The dry filter 
dries the air to approx. 10% humidity to prevent corrosion and accumulation of condensation

1

 in 

the interstitial space. 

The dry filter is rated for twelve months as long as the system is used for its intended use and 
there are no additional fluctuations in temperature. 

A dry filter is orange when new and turns colourless

 (or green)

 when spent. Spent dry filters 

must be 

replaced or regenerated without delay. 

3.5 Overpressure 

valve 

The overpressure valve integrated in the pressure line protects the interstitial space from 
intolerably high overpressure (exceeding the test pressure). 
Intolerably high overpressure can be caused among others by: 

•

  increase in ambient temperature (e.g. direct sunshine) 

•

  increase in temperature from hot filling (possibly consult manufacturer) 

3.6  Description of the display and control elements 

3.6.1  Status of the display elements (LEDs) for type DL .. 

LEDs 

Operating status  Alarm status 

Alarm, audible alarm 
switched off 

Unit out of order 

OPERATION: 
green 

ON ON 

ON 

ON 

ALARM: 

red

 

OFF O

N

  FLASHES 

ON 

 

 

                                                           

1

 Accumulation of condensation in the interstitial space can cause an intolerable pressure increase. 

26/01/2006

 

4

7 von 49

Содержание DL 100

Страница 1: ...Overpressure leak detector DL and DLG Z 65 23 409 Documentation DL Art No 603 002 Issue 07 2006 SICHERUNGSGERÄTEBAU GMBH Hofstraße 10 57076 Siegen ...

Страница 2: ...x TD Technical Data 1 page 3 3 Appendix FC Dry Filter monitoring 1 page 3 4 Appendix TF Dry filter Size of dry filters 1 page 3 5 Appendix DP Evaluating the display for the function Tightness test 1 page 5 Dimension and Drilling Plastic housing 1 page 6 Dimension and Drilling Steel housing weather protected 1 page 7 Working sheet AB 820 500 pneumatic connections 2 pages 8 Approval Certificate of t...

Страница 3: ... to 450 mbars The leak detector s protected design is located in a weatherproof housing Leak detectors for alarm pressures of 590 mbars and higher are only available in this design The leak detector s economic leak control design functions as both a leak detector and a leak reading device whereby the leak detector is equipped with an integrated distribution for connecting up to 6 tanks This design...

Страница 4: ... detector 7 4 4 Installation of the connection lines 7 4 5 Installation of the dry filter DL ONLY 8 4 6 Choice of pressure reducer DLG ONLY 8 4 7 Pressure cylinder and pressure reducer DLG ONLY 8 4 8 Electrical connection 9 4 9 Installation examples 9 5 Start up servicing 9 6 Operating instructions 10 6 1 General 10 6 2 Maintenance 11 6 3 Intended use 11 6 4 Function test 11 6 5 Alarms 14 7 Remova...

Страница 5: ...he feasibility of monitoring the tightness of the interstitial space 2 2 Tanks interstitial space see chapter 2 4 Under and above ground double walled steel or plastic tanks without leak detection liquid in the interstitial space manufactured in the factory or on site whose interstitial space is suitable for the connection of a DL as per Annex B Under and above ground single walled steel or plasti...

Страница 6: ...tert gas to the interstitial space The leak detector has a display in the housing lid which shows the operating pressure in the interstitial space Values under 50 mbar or under 0 73 PSI are not shown Values between 50 and 999 mbar are shown in mbar without decimals Values from 1 bar are shown in bar with 2 decimal places and from 10 bar with 1 decimal place Values in PSI are shown with 1 or 2 deci...

Страница 7: ...nterstitial space The dry filter is rated for twelve months as long as the system is used for its intended use and there are no additional fluctuations in temperature A dry filter is orange when new and turns colourless or green when spent Spent dry filters must be replaced or regenerated without delay 3 5 Overpressure valve The overpressure valve integrated in the pressure line protects the inter...

Страница 8: ... through keys For DL and DLG Switch audible alarm off Press the button Audible alarm once briefly audible signal switches off red LED flashes Press again to switch the audible signal on This function is not available in normal operation and during malfunctions Testing the visual and audible alarm Press and hold the button Audible alarm approx 10 sec the alarm is triggered until the button is relea...

Страница 9: ...have completed at least 1 automatic refilling interval in normal operation i e without filling with an installation pump for a meaningful statement Checking the tightness of the monitored system Press and hold the button Audible alarm until the Alarm LED flashes quickly then release A value for tightness is shown when the Alarm LED lights up and is also shown in the display see chapter 6 4 5 10 se...

Страница 10: ...al control desk or similar device 4 NOT in potentially explosive areas 5 The distance between leak detector and interstitial space should be kept as short as possible 4 4 Installation of connection lines between leak detector and tank 1 Metal usually copper or plastic tubes with pressure resistance at least equal to the test pressure of the interstitial space the same applies to fittings and screw...

Страница 11: ...reducer star up function test DLG ONLY 1 After the pressure cylinder has been set up securely remove the protective cover 2 Fit the pressure reducer to the cylinder 3 Close the shut off cock on the pressure reducer 4 Install the connecting tube between leak detector and pressure reducer 5 Turn pressure control valve all the way back 6 Open bottle shut off cock poss leak test between pressure reduc...

Страница 12: ...illed tank e g check that there is no gas in leak detector and or interstitial space Other measures can depend on local conditions at the discretion of the staff 3 After completing the pneumatic connection proceed with the electrical connection 4 Check that the LEDs Operation and Alarm light up and that the audible alarm works Press the button Audible alarm 5 Three way valve 21 in position III con...

Страница 13: ...must be eliminated in an appropriate period of time 3 An alarm always indicates a major leak or defect Find and eliminate the cause quickly 4 The operator must regularly check that the Operation LED is working properly 5 Disconnect the leak detector from the power supply before performing and repair work 6 The operating lamp goes off when there is a circuit failure the dry relay contacts open 7 DL...

Страница 14: ...ive area Lead throughs for the pneumatic hoses are sealed gas tight Leak detector electric is connected so that it cannot be switched off 6 4 Function test Check functional and operational safety every time after start up on the basis of chapter 6 2 in the intervals stated there11 every time after troubleshooting 6 4 1 Test scope 1 Poss check the scope of work with the person responsible on site 2...

Страница 15: ...fold with connected tanks 6 4 3 Checking the switching values with test unit 1 Connect the test unit to the test port of three way valve 20 and 21 Both valves in setting II 2 Connect measuring gauge to the test unit 3 Close needle valve test unit pressure is built up to operating pressure 4 Vent using the needle valve ascertain switching values for Pump ON and Alarm ON visual and audible note valu...

Страница 16: ...te the values 5 Three way valve in setting I remove measuring gauge 6 4 6 Tightness test 1 Check that all shut off cocks with connected tank are open 2 Connect measuring gauge to three way valve 21 setting III 3 Begin with the leak test after pressure has compensated The tightness test is passed when the values in the following table are achieved Interstitial space volume in litres Max 1 mbar 0 01...

Страница 17: ...ways comply with the following points Check that no gas is present before and during work Any openings which could allow for entrainment of a potentially explosive atmosphere must be sealed gas tight Do not use spark producing electrical tools saws abrasive cutters If this is unavoidable comply with EN 1127 Avoid the build up of electrostatic charges e g through friction or wearing unsuitable clot...

Страница 18: ...24 2 Fine wire fuse 24 3 Fine wire fuse 25 Pressure cylinder shut off cock 29 Key Fill 30 Housing 43 Measuring line 61 Check valve with filter 69 Buzzer 70 Overpressure valve 71 Key Audible alarm 72 Dry filter 73 Interstitial space 76 Main PCB 77 Pressure control valve 102 Pressure sensor 103 Display 104 Operational pressure network air nitrogen 105 Control unit 106 Contacts for serial data transf...

Страница 19: ...I I II II III III IV IV 21 21 21 21 20 20 20 20 27 11 2002 P 060 000 Druckleitung Messleitung 19 von 49 ...

Страница 20: ...Ex Ex Ex 17 102 72 73 43 13 27 11 2002 M1 060 000 76 30 21 20 70 20 von 49 ...

Страница 21: ...Ex Ex Ex 73 73 73 230 V 50 Hz 21 02 43 20 13 72 27 11 2002 M2 060 000 71 69 01 09 21 von 49 ...

Страница 22: ...27 11 2002 M3 065 000 45 71 29 69 01 09 103 104 14 Ex Ex Ex 73 73 73 230 V 50 Hz 21 02 43 20 13 22 von 49 ...

Страница 23: ...76 30 70 44 27 11 2002 M4 065 000 Ex Ex Ex 102 73 43 13 21 20 14 05 77 25 19 bar 0 16 10 bar 0 100 200 300 23 von 49 ...

Страница 24: ...27 11 2002 SL 853 600 2 6 4 5 3 11 12 1 AC DC 105 106 102 71 01 69 24 1 59 09 76 17 60 Rp 24 von 49 ...

Страница 25: ...27 11 2002 SL 853 700 2 6 5 11 12 1 AC DC 3 4 21 22 105 106 102 103 44 71 29 01 45 76 69 24 1 24 3 24 2 59 09 25 von 49 ...

Страница 26: ...22 84 85 85 22 52 98 98 0 Kl 1 0 17 12 2002 P 115 392 21 21 20 20 90 90 26 von 49 ...

Страница 27: ...ure pAE switch value Alarm ON the alarm is triggered at the latest at this pressure pAA switch value Alarm OFF the alarm goes off on passing this value The switching value Alarm OFF is approx 15 mbar higher than the switch value Alarm ON for pressure stages 1000 and approx 100 mbar higher for pressure stages 1000 pAA pAE 15 mbar pressure stages 1000 100 mbar pressure stages 1000 pPA Switch value P...

Страница 28: ...ed at the latest at this pressure pAA switch value Alarm OFF the alarm goes off on passing this value The switch value Alarm OFF is approx 15 mbar higher than the switch value Alarm ON for pressure stages 1000 and approx 100 mbar higher for pressure stages 1000 pAA pAE 15 mbar pressure stages 1000 100 mbar pressure stages 1000 pPA Switch value Pump OFF nominal pressure pPE Switch value Pump ON The...

Страница 29: ...als AS 5 and 6 230 V 50 Hz 200 VA Switch contact load potential free contacts max 230 V 50 Hz 3 A Terminals 11 and 12 min 6 V 10 mA External fuse of the leak detector max 10 A Overvoltage category 2 2 Pneumatic data requirements for the test measuring gauge Nominal size mind 100 Class accuracy mind 1 6 Scale end value suitable 21 07 2005 TD 1 29 von 49 ...

Страница 30: ...ible signal can be acknowledged by pressing briefly once The visual and potential free indication remains The entire indication can be acknowledged by pressing and holding the button Acknowledge dry filter message until the lower LED flashes Next time the pump starts up or if this function is carried out while the pump is running after approx 30 s the indication is triggered again if the residual ...

Страница 31: ...or above ground tanks Max volume of the interstitial space with Type TF 180 TF 1 TF 2 TF 6 DL 50 DL 100 350 750 2100 4800 DL 290 DL 330 300 600 1600 3700 DL 400 DL 450 250 520 1500 3500 DL 590 DL 750 240 500 1350 3000 DL 1000 DL 1100 210 400 1150 2600 DL 1500 DL 2000 150 300 800 1850 DL 2300 DL 2500 130 250 700 1600 DL 3000 110 230 600 1400 21 07 2005 1 31 von 49 ...

Страница 32: ...detector to see directly whether there is any need to look for leaks After pressing the button this is confirmed by a brief audible signal which can be heard once followed by a flashing signal i e the Alarm LED flashes briefly to indicate the tightness as fol lows Number or flashes Evaluation of the tightness 0 Very tight 1 bis 3 Tight 4 bis 6 Sufficient tight 7 bis 8 Maintenace recommended 9 bis ...

Страница 33: ...18 11 2003 Dimension Drilling To remove the cover To open the cover 170 230 6 B x H x T 266 x 217 x 110 266 30 100 217 250 350 33 von 49 ...

Страница 34: ...28 06 2005 Drilling Dimension 200 300 260 220 T 140 8 34 von 49 ...

Страница 35: ...ead of the basic body 3 Olive threaded fitting for plastic and metal pipes 1 Insert the reinforcing sleeve into the end of the pipe 2 Knock in the reinforcing sleeve 3 Push the union nut and the olive over the end of the pipe 4 Screw the union nut by hand until you feel a stop 5 Press the pipe against the stop in the inner cone 6 Tighten the union nut by approx 1 5 revolutions pipe must not turn 7...

Страница 36: ...ound 3 Wire clip clamp tightly using pliers and push onto the joint Screw clip push the clip over the joint and tighten it using a screwdriver care must be taken that the clip is a smooth tight fit 6 Tube connections socket 4 and 6 mm for VACUUM For vacuum applications where there is no excess pressure on the connection lines even in the case of a leakage proceed as in item 5 but without clips For...

Страница 37: ...d tanks single walled tanks with pressure resistant jacketing and double walled sumps and containments with sufficient pressure resistance see section No 2 of the Technical Description dated 21 April 2004 3 4 Design The designation overpressure leak detector type DL DLG covers two types which differ according to how pressure is generated and with regard to the switching pressures The units consist...

Страница 38: ...ng gauge Overpressure valves to protect the interstitial space from excessive overpressure are an integral part of the leak detectors and installed in the pressure lines of the unit Overpressure valves to protect the type DLG units when connected to an external pressure accumulator must be connected externally between the leak detector and pressure accumulator as required Details of the design for...

Страница 39: ...oads The mechanical function tests and software test produced positive results Undefined measured values incorrect calibrations and failure of the system cycle triggered the alarm The function tests over 440 hours also produced positive test results Leak detector DL 400 fulfils the requirements made of it with regard to monitoring the overpressure generated in the interstitial space with an automa...

Страница 40: ...m The leak detector with type designation DLG is identical to the leak detector DLR G which was already certified with the approval certificate dated 14 May 2002 and approved with approval number Z 65 26 349 so that its suitability for the intended application was already verified in the approval process Suitability of the adequate capacity of the dry cartridges was already verified in the approva...

Страница 41: ... the interstitial space 4 The supply pressure for the leak detector DLG stated in the Technical Description for the pressure accumulator must be heeded because otherwise the re fill quantity of leak detector medium deviates from the tolerable value stated in the approval principles 5 Every leak detector must be marked indelibly and legibly with at least the following details Manufacturer or manufa...

Страница 42: ...m Overpressure leak detector type DL and type DLG as part of a leak detection system for double walled tanks tanks with leak detection lining or leak detection jacketing interstitial space of sumps and containments for the storage of water polluting liquids Validity period until 30 April 2010 The above approval item is herewith granted general building inspectorate approval This general building i...

Страница 43: ... legal areas e g 1st Ordinance on the Machine Safety Law Low Voltage Ordinance Law on Electromagnetic Compatibility of Machines EMC 11th Ordinance on the Machine Safety Law Explosion Protection Ordinance 1 5 With this general building inspectorate approval the approval item is not required to undergo specific water suitability testing and type approval as per Law 19 h of the Water Resources Act WH...

Страница 44: ...e following details type designation approval number 2 3 Compliance verification 2 3 1 General Confirmation that the leak detectors comply with the stipulations of this general building inspectorate approval must be provided for every production factory with the manufacturer s Declaration of Conformity on the basis of inhouse production controls and type testing of the leak detector by an acknowle...

Страница 45: ...n medium 3 2 The limits of operation of the leak detectors to ensure that the alarms are given are stated in Annex B of the Technical Description with reference to the maximum effective liquid pressure on the bottom of the tank static pressure of the stored liquid plus overlay pressure depending on the alarm switching value of the leak detector version 3 3 The leak detector must only be connected ...

Страница 46: ...g of the leak detector must only be contracted to such companies which are specialist companies for these activities in accordance with 19 I Water Resouces Act WHG 2 The activities as per 1 do not have to be carried out by specialist companies if they are featured under the exceptions for mandatory specialist companies according to the national regulations or the manufacturer of the approval item ...

Страница 47: ...oltage Directive EN 60 335 1 2002 EN 61 010 1 2001 EN 60 730 1 2000 89 106 EEC Construction Products Directive EN 13 160 1 2 Approved body TÜV Nord Hamburg 94 9 EEC Equipment in Potentially Explosive Atmospheres The leak detector with its pneumatic parts may be connected to spaces interstitial spaces of tanks pipelines fittings which are required for category 3 devices The following documents were...

Страница 48: ... 1 2001 EN 60 730 1 2000 89 106 EEC Construction Products Directive EN 13 160 1 2 Approved body TÜV Nord Hamburg 94 9 EEC Equipment in Potentially Explosive Atmospheres The leak detector with its pneumatic parts may be connected to spaces interstitial spaces of tanks pipelines fittings which are required for category 3 devices and also under specific conditions to spaces which are required for cat...

Страница 49: ... our date of sale Our warranty will be effective only if the customer submits to us the functional report or test report on initial putting into service prepared by a recognised company specialised in water and water protection systems including the serial number of the leak detector Our warranty shall not apply in the event of faulty or improper installation or improper operation or if modificati...

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