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SGB VL-H9 Manual

Underpressure leak detector
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Underpressure leak detector
VL – H9
Z – 65.22 - 110
Art. No.: 601 602
Documentation VL-H9
Status:
01/2005
SICHERUNGSGERÄTEBAU GMBH
Hofstraße 10
57076 Siegen

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  • Page 1 Underpressure leak detector VL – H9 Z – 65.22 - 110 Art. No.: 601 602 Documentation VL-H9 Status: 01/2005 SICHERUNGSGERÄTEBAU GMBH Hofstraße 10 57076 Siegen...
  • Page 2 Table of Contents for Documentation of the Vacuum Leak Detector VL - H9 1. Safety Instructions 4 pages 2. Technical Description of SGB 30 pages 3. Technical Data 1 page 4. Worksheet AB-820 500 Installation of Screwed Connections 2 pages 5.

  • Page 3: Safety Instructions

    (e.g. installation of a roof to protect against sunlight). If the leak detector VL-H9/Ex is operated with an alarm horn in the explosion area, the operator must ensure that a 70% duty cycle is not exceeded, i.e. the acoustic alarm must be switched off within 45 minutes.
  • Page 4 SAFETY INSTRUCTIONS - P - 2 - VACUUM LEAK DETECTOR VL – H9 3. To section 6.3 “Installation of the Pneumatic Connecting Lines” Section (5) has been rewritten, sections (10) and (11) have been deleted and section 6.3.1 “Installation of the Exhaust Line” has been added. (5) Strong, metallic pipes must be used for the connecting lines (e.g.
  • Page 5 6. To section 8.1 “General Notes” (3) to (5) has been added to this section: (3) To clean the leak detector VL-H9/Ex or the working unit VL-H9/A-..-Ex, use a moist cloth. (4) For exchange or repair-work take care that the venting-measures are given (Distance between housing and flange plate >2.5 mm)
  • Page 6 SAFETY INSTRUCTIONS - P - 4 - VACUUM LEAK DETECTOR VL – H9 8. Section 8.6.3 “Operation” has been added to the documentation as follows: After the test work is carried out, ensure again that the 3-way-cocks are in the shown position. 9.

  • Page 7: Table Of Contents

    Installation instructions General instructions Place of installation of the leak detector 6.2.1 Installation of the leak detector VL-H9-Ex and of the operation unit VL-H9/A-...-Ex 6.2.2 Installation of the (central) signalling unit VL-H9/ZME, VL-H9/ME-... Installation of the pneumatic connection lines Electrical connection...
  • Page 8 Fig. 2 : Tank with VL-H9/A-Ex and VL-H9/ME Fig. 3 : Several tanks with VL-H9/A-Ex and VL-H9/ZME Fig. 4 : Tank with VL-H9/A-MV-Ex and VL-H9/ME-MV Fig. 5 : Tank with VL-H9/A-MV-Ex , VL-H9/ME-MV-LS and leakage probe FDL30 Vacuum Leak Detector Date: Feb. 98 Sicherungsgerätebau...

  • Page 9: Vacuum Leak Detector Vl-H9

    • tanks assembled either at the manufacturer's works or on site, with a mark of conformity or general approval issued by the competent building inspection authorities, which confirms that the suitability of the interstitial space for connection of a leak detector VL-H9 has been checked.

  • Page 10: Tanks With Excess Pressure

    Double-walled tanks with interstitial spaces as per 3.1.2 operated at a max. excess pressure of 25 bar, assembled either at the manufacturer's works or on site, for which the suitability of the interstitial space for connection of a leak detector VL-H9 has been confirmed. Liquids to be stored •...

  • Page 11: Flat-Bottom Tanks

    1,05 1,22 1,53 Density [kg/dm³] Diagram 1: Tank height / tank diameter as a function of the density For tanks installed above ground, the actual density may be taken whereas for underground tanks, a min. density p = 1kg/dm³ has generally to be assumed. 3.4.2 Flat-bottom tanks Tanks to DIN 4119, with a suction line reaching to the deepest point of the interstitial space.

  • Page 12: Calculation For Utilisation Of An Acoustic Alarm For Tanks With A Suction Line To The Bottom

    3.4.4 Calculation for utilisation of an acoustic alarm for tanks with a suction line to the bottom For all other tanks with a suction line to the bottom, the acoustic alarm can be utilised as follows: The volume of the interstitial space will be reduced as follows by incoming liquid = Trip pressure Pump Off in Pa ...
  • Page 13 Application Leak detector type Leak detector for tanks to 3.1 and 3.4.1 – 3.4.4 VL-H9-Ex completely installed in potentially explosive locations VL-H9-Ex Network Application Leak detector type Leak detector for tanks to 3.1 and 3.4.1 – 3.4.4 consisting VL-H9/A-Ex with...
  • Page 14 VL-H9/A-Ex VL-H9/A-Ex VL-H9/ZME Network Application Leak detector type Leak detector for tanks to 3.1 and 3.4.1 – 3.4.4 consisting of: VL-H9/A-MV-Ex with operation unit installed in potentially explosive locations VL-H9/ME-MV signalling unit installed outside potentially explosive locations VL-H9/A-MV-Ex VL-H9/ME-MV Network Vacuum Leak Detector Date: Feb.
  • Page 15 Application Leak detector type Leak detector for tanks to 3.1 and 3.4.1 – 3.4.4 consisting of: VL-H9/A-MV-Ex with operation unit installed in potentially explosive locations VL-H9/ME-MV-LS signalling unit installed outside potentially explosive locations leakage probe FDL30 leakage probe VL-H9/A-MV-Ex VL-H9/ME-MV-LS...

  • Page 16: Functional Description

    Functional description General (1) The vacuum leak detector VL-H9 indicates any leakage in the leak detector device by pressure rise (leak detector, connection lines with fittings and interstitial space). (2) The vacuum pump installed in the leak detector generates a vacuum via the suction line. Such vacuum is controlled via the measuring line by a pressure switch which is also installed in the leak detector.

  • Page 17: Functional Description Of Type Vl-H9

    Functional description of type VL-H9/...-MV-... (design with solenoid valve) This version of the leak detector VL-H9 is equipped with an additional solenoid valve in the suction line. When an alarm is activated, the solenoid valve is closed, and the pump is switched off. For the purpose of commissioning, the solenoid valve can be opened and the pump switched on by means of a commissioning switch installed in the leak detector.

  • Page 18: Installation Instructions

    (1) The leak detector should be installed in the close vicinity of the tank. It can be installed in zone 1, zone 2 or out of potentially explosive locations. (2) The leak detector VL-H9-Ex can be installed outdoors. In this case, it should be shielded from direct sunlight.

  • Page 19: Installation Of The Pneumatic Connection Lines

    Installation of the pneumatic connection lines (1) Attention: The connection lines and all fittings must have a min. compressive strength of PN10. (2) Detonation protections are installed directly on the tank connections. (3) A liquid barrier is installed in the suction line (vertical installation). (4) Stop valves are installed in the suction and measuring line on the tank side.

  • Page 20: Electrical Connection

    (4) The instructions of the local electric supply company are to be observed. (5) It is possible either to connect an external alarm signal to the central signalling unit VL-H9/ZME and to the leak detector VL-H9-Ex or to transmit the alarm by using potential free contacts.

  • Page 21: Installation Of The Electrical Connection Line Between Operation Unit And (Central) Signalling Unit

    (8) The vacuum pump is protected by the fine-wire fuse F1 (1A quick-acting or semi time-delay). For replacing the fuses, power to the leak detector must be switched off. The fuses in the leak detector VL-H9-Ex shall only be replaced by the manufacturer. Installation of the electrical connection line between operation unit and (central) signalling...

  • Page 22: Connection Of Another Sgb Leak Detector To The Central Signalling Unit

    (1) It is possible to connect other leak detectors that are not explosion-proof to the central signalling unit VL-H9/ZME, in order to obtain a central alarm and pump running indication. (2) Such connection presupposes that the leak detector has a potential free contact that opens in the case of an alarm.

  • Page 23: Installation Of The Connection Line Between Leakage Probe Fdl30 And Signalling Unit Vl-H9/Me-Mv-Ls

    No. in the leak detector Designation in ZME Meaning Potential free contact 1 A1 Alarm contact Potential free contact 2 A2 Alarm contact Mains N Voltage supply Mains L 4 L1 Voltage supply 5 PE Earth conductor Table 4: Connection leak detector (7) Each channel occupied by a leak detector must be activated via the relevant coding bridge in the central signalling unit (compare 6.5 no.

  • Page 24: Additional Instructions For Underground Tanks

    600 mbar must be continued until no further leak detection liquid is taken up. The suction must be greater than 600 mbar. (5) When using leak detector type VL-H9, at least the following quantities of leak detection liquid must be extracted from the interstitial spaces of the tanks: Tank size [m³]...

  • Page 25: Installation Examples

    DS1 not required with exhaust outdoors and interstitial space zone 1 DS2 not required with interstitial space zone 1. Leakage containment DIN 4119 Fig. 1 : Tank with VL-H9-Ex Vacuum Leak Detector Date: Feb. 98 Sicherungsgerätebau VL - H9 GmbH...
  • Page 26 Arbeitsgerät PTB Nr: xxxxxxxxxxxx II B T3 Achtung: Das Arbeitsgerät darf nur zusammen mit der Meldeeinheit VL-H9/ME oder der zentralen Meldeeinheit VL-H9/ZME betrieben werden. Wartung: Der Leckanzeiger muß einmal jährlich vom Sachkundigen eines Fachbetriebes oder des Betreibers auf Funktionsfähigkeit und Betriebssicherheit geprüft werden.
  • Page 27 Arbeitsgerät PTB Nr: xxxxxxxxxxxx II B T3 Arbeitsgerät Achtung: Das Arbeitsgerät darf nur zusammen mit der Meldeeinheit VL-H9/ME Achtung: Das Arbeitsgerät darf nur zusammen mit der Meldeeinheit VL-H9/ME Achtung: Das Arbeitsgerät darf nur zusammen mit der Meldeeinheit VL-H9/ME oder der zentralen Meldeeinheit VL-H9/ZME betrieben werden.
  • Page 28 DS1 not required with exhaust outdoors and interstitial space zone 1 DS2 not required with Excess pressure interstitial space zone 1. Zone 1 Fig. 4 : Tank with VL-H9/A-MV-Ex and VL-H9/ME-MV Vacuum Leak Detector Date: Feb. 98 Sicherungsgerätebau VL - H9 GmbH...
  • Page 29 DS1 DS2 DS1 not required with exhaust outdoors and interstitial space zone 1 Leakage 2 EEx [ib] probe Fig. 5 : Tank with VL-H9/A-MV-Ex , VL-H9/ME-MV-LS and leakage probe FDL30 Vacuum Leak Detector Date: Feb. 98 Sicherungsgerätebau VL - H9 GmbH...

  • Page 30: Commissioning Of The Leak Detector Device

    Exhaust Suction 1000 mbar 1000 mbar VL-H9-Ex and VL-H9/A-Ex VL-H9/A-MV-Ex Suction line Liquid stop valve The auxiliary pump is connected to the suction line socket on the tank.(Never connect it to the testing socket of the leak detector). A pressure gauge is connected to the measuring line of the testing socket.

  • Page 31: Operating Instructions

    (this will lead to collapse of the leakage protection lining). Maintenance (1) Once a year, the leak detector VL-H9 should be checked for functional safety by an expert from a specialist company or by the tank user's expert.

  • Page 32: Emptying Of The Condensate Traps

    Suction Measuring Exhaust Suction VL-H9-Ex und VL-H9/A-Ex VL-H9/A-MV-Ex If the pneumatic connecting lines are equipped with condensate traps, these boxes must be emptied. Proceed as follows: close the stop valves on the tank and bleed the suction and measuring lines on the leak detector. Now the connecting lines are at atmospheric pressure, and the condensate traps can be emptied.

  • Page 33: Checking Of The Trip Values Of The Pressure Switch

    1 can be checked. In the case of the operation unit VL-H9/A-MV-Ex, the pump must switch off when the alarm point is reached. In order to continue the test, the starting switch inside the signalling unit must be put into the starting position.

  • Page 34: Short-Duration Test With Intermediate Receptacle

    Make sure that the pressure changes slowly in order to allow for an exact reading of the trip values. In the case of the operation unit VL-H9/A-MV-Ex, the pump must switch off when the alarm point is reached. In order to continue the test, the starting switch inside the signalling unit must be put into the starting position.

  • Page 35: Checking Of The Pump Suction Head

    The interstitial space remains separated. Now, the maximum pump suction head can be checked. It must be > 580 mbar. In the case of the operation unit VL-H9/ME-MV-..., the starting switch must be in the starting position.

  • Page 36: Operation

    The stop valves in the measuring line and in the suction line must be lead sealed in the open position. In the signalling unit VL-H9/ME-MV-..., the starting switch must be reset into the operating position, the status indication lamps for operation and mains must be on. The 'Alarm stop' switch must be lead sealed and the indication lamp 'Alarm Stop' must be off.

  • Page 37: Appendix Technical Data

    Pump fuse F1 (quick-acting or semi time-delay) External signal fuse F2 2.5 A (max. 3 A) External signal fuse F2 (ONLY VL-H9/Ex) 0,125 A (quick-acting) Solenoid valve fuse F3 0.1 A (semi time-delay) External fusing of the leak detector max. 10 A...
  • Page 38 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 39 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 40 Page 1 of the notice dated April 26, 2002, about the modification and extension of the period of validity of the General Approval of the Building Inspection Authorities no. Z-65.22-110 dated April 17, 1997 D E U T S C H E S I N S T I T U T F Ü R B A U T E C H N I K Anstalt des öffentlichen Rechts (German Institute for Constructional Engineering) 10829 Berlin, April 26, 2002...
  • Page 41 The subject of this general approval is an underpressure leak detector of the type designation VL-H9 with a pressure-switch controlled evacuating pump for an alarm pressure of ≥ 330 mbar. The leak detectors may be connected to double-wall tanks according to section (2). Leaks in the walls of the interstitial space are registered by means of falls in pressure and then indicated optically and acoustically (for the design of the leak display units see Appendix 1).
  • Page 42 Composition 2.1.1 The subject of approval consists of various versions of the vacuum leak detector type VL-H9 comprising at least the following components: indicator and control elements, vacuum pump, pressure switch and electrical and/or electronic components for output signal processing: Type VL-H9 Ex (Zone 1 and 2;...
  • Page 43 Manufacture and marking 2.2.1 Manufacture The leak detectors shall be manufactured only in the applicant’s manufacturing shops. The leakage probes shall be manufactured only in manufacturing plants that are qualified to provide them with the certificate of conformity, in accordance with the relevant codes of the different states. Design, dimensions and materials of leak detectors and leakage probes shall be in accordance with the specifications described in appendix 2 of the present general approval.
  • Page 44 Conditions relating to the design of leak detectors For tanks to DIN 6608-2 , DIN 6616 shape A , DIN 6618-2 , DIN 6619-2 , DIN 6623-2 and DIN 6624- , liquids should have the following maximum densities: DIN 6608-2 , DIN 6616 shape A and DIN 6624-2 Tank diameter 2.90 m...
  • Page 45 When connecting the leak detector VL-H9/ME-MV LS to a tank with internal operating pressure, the leak detector including its connecting line to the interstitial space shall be subject to a leak test in which 1.1 times the max.
  • Page 46 * By SGB limited to T3 46 von 50...
  • Page 47 47 von 50...
  • Page 48 48 von 50...
  • Page 49 (as a component by the means of the EU directive 94/9EEC) made by Sicherungsgerätebau GmbH Hofstraße 10 D- 57076 Siegen With this declaration, SGB verifies With this declaration, SGB certifies With this declaration, SGB certifies that the above mentioned leak...
  • Page 50 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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