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SGB DL Series Manual

Overpressure leak detector
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Overpressure leak detector
DL and DLG
Z – 65.23 - 409
Art. No.: 603 002
Documentation DL
Issue:
07/2006
SICHERUNGSGERÄTEBAU GMBH
Hofstraße 10
57076 Siegen

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Summary of Contents for SGB DL Series

  • Page 1 Overpressure leak detector DL and DLG Z – 65.23 - 409 Art. No.: 603 002 Documentation DL Issue: 07/2006 SICHERUNGSGERÄTEBAU GMBH Hofstraße 10 57076 Siegen...
  • Page 2 OVERPRESSURE LEAK DETECTOR DL.. Content Overview of the various designs 1 page Technical description for the overpressure leak detector DL 15 pages Drawings to the technical description 8 pages Appendix to the technical description 6 pages Appendix B: Switch and pressure values 2 page Appendix TD: Technical Data 1 page...
  • Page 3 GI 1 OVERPRESSURE LEAK DETECTORS DL.. Overview of the various designs The different designs of overpressure leak detectors in the DL series are described more precisely by means of the attached letters. DL …. ELC (P) FC M The leak detector’s ‘manometer’ design is equipped with a digital pressure reading in the housing’s lid.

  • Page 4: Table Of Contents

    OVERPRESSURE – LEAK DETECTOR DL .. Contents Page Subject Field of application Requirements for interstitial space Tanks / interstitial space Stored products Exclusion Description of functions Switching and pressure values Normal operation Air or liquid leak Air drying / Dry filter (DL.. ONLY) Overpressure valve Description of the display and control elements Installation instructions...

  • Page 5: Subject

    OVERPRESSURE – LEAK DETECTOR DL .. 1 Subject Overpressure leak detector for double-walled tanks with pressure provided either by a pump or by a compressed gas supply. DL .. Overpressure leak detector with integrated pump. Dots stand for alarm pressure. DLG ..

  • Page 6: Exclusion

    OVERPRESSURE – LEAK DETECTOR DL .. Exclusion If permeation occurs in the interstitial space as a result of the stored product and the material structure of the inner tank wall (e.g. in double-walled GRP tanks) which can result in an explosive atmosphere in the interstitial space under normal operating condition, ONLY leak detector DLG ..

  • Page 7: Air Or Liquid Leak

    OVERPRESSURE – LEAK DETECTOR DL .. 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.
  • Page 8 OVERPRESSURE – LEAK DETECTOR DL .. 3.6.2 Status of the display elements (LEDs) for type DLG .. LEDs Operating Refilling Filling Alarm Alarm, audible Unit out status activated activated status alarm switched off of order OPERATION: green ALARM: red FLASHES FLASHES PRESSURE FLASHES...

  • Page 9: Installation Instructions

    OVERPRESSURE – LEAK DETECTOR DL .. DL .. DLG .. Zero point adjustment Filling the interstitial space with leak detection Three-way valve 21 in setting II (alarm triggered, medium pump running) Press and hold the "Filling" button for approx. 5 Press and hold the button "Audible alarm"...

  • Page 10: Personal Protective Equipment

    OVERPRESSURE – LEAK DETECTOR DL .. (7) If start up/operation takes place in enclosed rooms, ensure that there is adequate ventilation. Affix a warning sign. Personal Protective Equipment The items listed here refer in particular to safety when working on systems which may be subject to risk of explosion.

  • Page 11: Installation Of The Dry Filter (Dl

    OVERPRESSURE – LEAK DETECTOR DL .. (7) Seal conduits to be gas-tight with protection from penetration of liquids. (8) Avoid build-up of static electricity (e.g. when inserting and routing tubes). (9) Details for connecting systems, see worksheet AB-820 500 Installation of the dry filter (DL .. ONLY) (1) As close as possible to the leak detector.

  • Page 12: Electrical Connection

    OVERPRESSURE – LEAK DETECTOR DL .. Electric connection (1) Power supply: according to label (2) Permanent installation, i.e. no plugged or switched connections. (3) Comply with the regulations issued by the utility company. DL .. DLG .. (4) Terminal configuration: (see also SL-853 (4) Terminal configuration: (see also SL-853 600) 700)

  • Page 13: Operating Instructions

    OVERPRESSURE – LEAK DETECTOR DL .. connected installation pump, find and the connected pressure cylinder, find and eliminate the leak (poss. check correct setting of eliminate the leak (poss. check capacity of pressure reducer). CAUTION: Leak detector installation pump, check correct setting of display begins at 150 mbar pressure.

  • Page 14: Intended Use

    OVERPRESSURE – LEAK DETECTOR DL .. (1) Once a year to ensure functional and operational safety. (2) Scope of inspection as per chapter 6.4 (3) Also check compliance with the conditions in chapter 4.5 and 6.2. Intended use • Groups of interstitial space only for underground interstitial spaces. •...
  • Page 15 OVERPRESSURE – LEAK DETECTOR DL .. 6.4.2 Check the free passage of air (gas) in the interstitial space (1) If several interstitial spaces are manifolded together, check the free passage of each interstitial space on its own: (2) If several interstitial spaces are connected to a manifold with shut-off cocks in the pressure and measuring lines, close all shut-off devices at the distribution units.
  • Page 16 OVERPRESSURE – LEAK DETECTOR DL .. 6.4.5 Checking the overpressure valve Operating pressure must have been built up in the leak detector for this test. (1) Three-way valve 21 in setting "II" (pressure sensor is vented). The pump switches on and the alarm is triggered.

  • Page 17: Alarms

    OVERPRESSURE – LEAK DETECTOR DL .. Alarms DL .. DLG .. (1) Red and yellow LEDs light up, the audible (1) Red LED lights up, the audible signal can signal can be heard. be heard. (2) Stop the audible signal. (2) Stop the audible signal.
  • Page 18 OVERPRESSURE – LEAK DETECTOR DL .. LED "Operation", green Check valve with filter Pressure line Buzzer Pressure reducer Overpressure valve Overpressure pump Key "Audible alarm" Pressure cylinder Dry filter Three-way valve in pressure line Interstitial space Three-way valve in measuring line Main PCB 24.1 Fine-wire fuse...
  • Page 19 Druckleitung Messleitung 27-11-2002 P - 060 000 19 von 49...
  • Page 20 27-11-2002 M1 - 060 000 20 von 49...
  • Page 21 230 V / 50 Hz 27-11-2002 M2 - 060 000 21 von 49...
  • Page 22 230 V / 50 Hz 27-11-2002 M3 - 065 000 22 von 49...
  • Page 23 27-11-2002 M4 - 065 000 23 von 49...
  • Page 24 17/60 24.1 27-11-2002 SL - 853 600 24 von 49...
  • Page 25 24.2 24.1 24.3 27-11-2002 SL - 853 700 25 von 49...
  • Page 26 90° 90° Kl. 1,0 17-12-2002 P - 115 392 26 von 49...

  • Page 27: Annex: B B

    2950 > 3000 < 3400 Special switching values agreed between SGB and customer The following abbreviations are used in the table: maximum pressure at the low point of the tank, including overlay pressure switch value "Alarm ON", the alarm is triggered at the latest at this pressure switch value "Alarm OFF", the alarm goes off on passing this value.
  • Page 28 > 3000 < 3400 4200 Special switching values agreed between SGB and customer The following abbreviations are used in the table: maximum pressure at the low point of the tank, including overlay pressure switch value "Alarm ON", the alarm is triggered at the latest at this pressure switch value "Alarm OFF", the alarm goes off on passing this value.
  • Page 29 ANNEX OVERPRESSURE LEAK DETECTOR DL .. Technical data 1. Electrical data Power supply (without external signal) 230∼ V - 50 Hz - 50 W Switch contact load, terminals AS (5 and 6) 230∼ V - 50 Hz - 200 VA Switch contact load, potential-free contacts, max: 230∼...
  • Page 30 ANNEX FC OVERPRESSURE LEAK DETECTOR DL.. Dry filter monitoring (FC) Function A sensor is integrated in the suction line of the pump between pump and dry filter to measure the moisture of the air intake. The sensor registers the increase in relative humidity when the desiccant is spent. The optical and audible alarm is triggered together with the potential-free message when the drying capac- ity is insufficient.
  • Page 31 ANNEX TF OVERPRESSURE LEAK DETECTOR DL.. Dry filter Size of dry filter for underground tanks: TF 180 (the larger dry filters can also be used) Size of dry filters for above ground tanks: Max. volume of the interstitial space with Type TF 180 TF 1...
  • Page 32 ANNEX DP OVERPRESSURE LEAK DETECTOR DL.. Evaluating the display for the function "Tightness test" Chapter 3.6.3 described "Checking the tightness of the monitored system". This function can be used to obtain an indication of the tightness of the monitored system. This is only possible if the switching value "Alarm OFF"...
  • Page 33 To remove the cover To open the cover B x H x T = 266 x 217 x 110 18-11-2003 Dimension / Drilling 33 von 49...
  • Page 34 T = 140 28-06-2005 Drilling / Dimension 34 von 49...
  • Page 35 Work Sheet: AB-820 500 Pneumatic connections 1 Flare type fitting for flare type pipes 1. Lubricate the O-rings 2. Place the intermediate ring loosely in the threaded connection piece 3. Push the union nut and the thrust collar over the pipe 4.
  • Page 36 Work Sheet: AB-820 500 Pneumatic connections 5 Tube connections (socket 4 and 6 mm for EXCESS PRESSURE) 1. Push wire or screw clip over the tube 2. Push the tube onto the Cu pipe or the tube socket (if necessary heat or dampen PVC tube), tube must fit tightly all the way round 3.

  • Page 37: Hofstraße

    TÜV Nord / Systems 1 July 2005 2102Stb File: 3237DV01040 Order No.: 8100586804 A p p r o v a l C e r t i f i c a t e for the design of a leak detector as part of a leak detection system ================================================================ Subject Overpressure leak detector as part of a leak detection system function on the...
  • Page 38 The following unit variants are used: Overpressure leak detector DLG .. The leak detector can be operated with air as well as with inert gas as leak detection medium. The necessary operating pressure in the interstitial space is generated by pressure-controlled refilling from a stationary pressure accumulator connected to the interstitial space.
  • Page 39 Tests The sample version of the leak detector in the variant DL 400 was tested with reference to the Technical Description with design drawings and circuit diagrams as well as installation and operating instructions and software documentation, for compliance with the requirements of the approval principles for leak detection systems.
  • Page 40 Pump curve leak detector DL 400: The switching processes were adjusted to the upper temperature limit of +70°C and lower temperature limit of -25°C in such a way as to trigger an alarm within 5 minutes. Tests of the alarm signalling device also produced positive results. The audible alarm produces a sound level of >...
  • Page 41 selected so that the alarm switching pressure is always at least 30 mbar above the static pressure of the stored liquid, taking account of possible overlay pressure in the tank. In the case of a sump, the maximum liquid hight of the liquid being collected must be taken into consideration. The units are to be selected on the basis of the tables contained in Annex B of the Technical Description dated 21 April 2004.
  • Page 42 GERMAN INSTITUTE FOR BUILDING TECHNOLOG Public Law Institution 10829 Berlin, 5 April 2005 Kolonnenstraße 30 L Phone: +49(0) 30 78730-364 Fax: +49(0) 30 78730-320 Ref: III 14-1.65.23-9/05 General Building Inspectorate Approval Approval number: Z-65.23-409 Applicant: Sicherungsgerätebau GmbH Hofstraße 10 57076 Siegen Approval item: Overpressure leak detector type DL..
  • Page 43 Page 3 of the General Building Inspectorate Approval No. Z-65.23-409 dated 5 April 2005 II. SPECIAL REGULATIONS Approval item and scope of application The subject of this general building inspectorate approval is an overpressure leak detector type designations DL.. (with integrated pump) and DLG.. (with integrated compressed gas supply) with the design variants for alarm pressure switching values of >...
  • Page 44 Page 4 of the General Building Inspectorate Approval No. Z-65.23-409 dated 5 April 2005 2.1.4 Verification of safe functioning of the approval item was provided according to the "Approval principles for leak detection systems for tanks (ZG-LAGB)" of the German Institute for Building Technology dated August 1994. Production and marking 2.2.1 Production The leak detectors must only be produced in the applicant's factory.
  • Page 45 Page 5 of the General Building Inspectorate Approval No. Z-65.23-409 dated 5 April 2005 The records are to be kept for at least five years. They are to be submitted to the German Institute for Building Technology and the highest building supervisory authorities on demand.
  • Page 46 Page 6 of the General Building Inspectorate Approval No. Z-65.23-409 dated 5 April 2005 if residual pressure monitoring of the pressure cylinder with alarm function is installed for operation with a permanently connected pressure cylinder (stationary a pressure cylinder). Refilling according to Annex B of DIN EN 13160-1 with air or inert gas as leak detection medium (monitoring medium) is considered not to be safeguarded if there is no residual pressure monitoring of the pressure cylinder with alarm function for operation with the permanently connected pressure cylinder...
  • Page 47 EC DECLARATION OF CONFORMITY Sicherungsgerätebau GmbH Hofstraße 10 D- 57076 Siegen hereby declare in sole responsibility that the leakage probes DL.., DLR-P.. comply with the essential requirements of the EC directives listed below. This declaration shall lose its validity if the device is modified without consulting us. Number / short title Satisfied regulations 2004/108/EC...
  • Page 48 EC DECLARATION OF CONFORMITY Sicherungsgerätebau GmbH Hofstraße 10 D- 57076 Siegen hereby declare in sole responsibility that the leak detectors DLG ..; DLR-G.. comply with the essential requirements of the EC directives listed below. This declaration shall lose its validity if the device is modified without consulting us. Number / short title Satisfied regulations 2004/108/EC...
  • Page 49 Warranty Dear customer, You have purchased a high-quality leak detector from our company. All of our leak detectors undergo a 100% quality control examination. The type plate with the serial number is only affixed after all test criteria have been complied with. The warranty period for our leak detectors is 24 months, beginning on the date of installation on site.

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