More Info



  • 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)!


V90ExHOperating 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.



  • 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.


V90ExH-2Operating 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.


Mounting Examples

Please click on the picture for a larger view!




ASF pdfInstallation and Operation Manual V90 Variante H

ASF pdfData Sheet V90 Variante H

ASF pdfV90 Variante H Accessories & Assembly Kits