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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-65.22-217
   EC-Type Examination Certificate PTB 99 ATEX 2037 X

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  • To monitor double-walled tanks with a suction line to the vessel bottom.
  • For monitoring single-walled tanks with leak protection lining.
  • 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:
  • Instrument panel (AK) to be installed in Ex zone 1 or 2.
  • Switch box (SK) or multiple switch box (M-SK). The switch box must be mounted outside the hazardous zone.
  • With built-in potential-free relay.

Operating vacuum:
in the interstitial space
max. -80 mbar +/- 5 mbar

Switching values: relative pressure 
Alarm ON PAE = -34 +0/-10 mbar
Pump OFF PPA = -80 +/-5 mbar

For further data please see the data sheet of the V80 Ex N leak detector.

Operating Conditions
  • Approved leak protection lining with a general building approval (certificate earlier).
  • Compliance with the relevant explosion protection guidelines for liquids with flash point < 55°C

The control unit must not be mounted in an hazardous area (ex-zone)!

  • Mounting Kits (MBS) for connection to tanks.
  • For the extended field of application, these leak detectors are built alternatively in stainless steel.
  • The instrument panel can be supplied with an explosion proof heater.
  • Special system design possible: for example, several AK's together with the controller M-SK 2/5.

Mounting Examples

Please click on the picture for a larger view!

Picture a Picture b
Picture c
Product Images

Leak Detector Type V80Ex N - Vacuum Principle

Leak Detector Type V80Ex N - Vacuum Principle

Installation and Operation Manual V80ExNInstallation and Operation Manual V80Ex N
Data Sheet V80 Ex NData Sheet V80 Ex N
General Design Permit (DIBT) V80Ex Variante NGeneral Design Permit (DIBT) V80Ex N
EC-Type Examination Certificate V80Ex NEC-Type Examination Certificate V80Ex N
V80 Version N Accessories & Assembly KitsV80Ex N Accessories & Assembly Kits


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