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Leak Detection Systems Overview
Operating Principles of Leak Detection Systems
Container Design
Liquid / Gas Medium

   General Design Permit (DIBT) No. Z-65.22-399 (container)
   and Z-65.25-400 (pipeline) - Tested by TÜV Nord, Hamburg

Print Version

  • The leak detector with an explosion protected housing bottom can be used on double-walled tanks according to DIN EN 12285-1 (DIN 6608 Part 2), DIN EN 12285-2 (DIN 6616 Form A), DIN 6618 part 2/4, DIN 6619, Part 2, DIN 6623 Part 2 and DIN 6624 part 2 as well as on flat bottom tanks according to DIN 4119.
  • For connection to double-walled plant or site-made containers, trays or sumps with a general building inspection approval or a laboratory certificate.
  • The leak detector can also be used to monitor single-walled tanks with a leak protection lining, if this is approved for the values noted below.
  • DIN 6608 Part 2 containers that were previously monitored by liquid leakage can be monitored with this vacuum leak detector after extracting a specified volume of leakage fluid.
  • To monitor double-walled, pressure-operated pipelines.
  • For monitoring of water-polluting liquids and flammable liquids with a flash point < 55°C, the explosion group IIA (IIB as an option) and the temperature class T4 are assigned.
  • The storage medium may only have the density allowed for the container type.

The leak detector must be mounted outside the hazardous area (ex-zone)!

  • Partially explosion protected leak detector on the vacuum principle, with integrated vacuum pump, consisting of:
  • Combined with a housing upper part (SK) and bottom (AK). Within the cluster housing, the Ex-zone separation was made, so that the leak detector is suitable for the control of flammable liquids.
  • With built-in potential-free relay.
  • In the lower part of the housing a detonation fuse is fitted in the intake and exhaust pipe by standard.

Operating vacuum:
in the interstitial space
max. -450 mbar +/- 15 mbar

Switching values: relative pressure 
Alarm ON PAE = -325 mbar +0/-30 mbar
Pump OFF PPA = -450 mbar +/-15 mbar

For further data please see the data sheet of the V90 H leak detector.

Operating Conditions
  • Compliance with the relevant explosion protection guidelines for liquids with flash point < 55°C
  • The leak detector must be mounted outside the hazardous area (ex-zone)!

  • Mounting Kits (MBS) for connection to tanks and/or pipelines.
  • For the extended field of application, these leak detectors are built alternatively in stainless steel.

Mounting Examples

Please click on the picture for a larger view!

Picture a Picture b
Picture c
Product Images

Leak Detector Type V90 H - Vacuum Principle

Leak Detector Type V90 H - Vacuum Principle

Installation and Operation Manual V90 Variante HInstallation and Operation Manual V90 Variante H
Data Sheet V90 HData Sheet V90 Variante H
General Design Permit (DIBT) V90 Variante HGeneral Design Permit (DIBT) V90 Variante H
V90 Version H Accessories & Assembly KitsV90 Variante H Accessories & Assembly Kits


Print Version

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