ASF Leak Detector Type D29 - Pressure Principle

Application

The leak detector is used to monitor non-pressurized underground/aboveground double-walled pipelines.
For monitoring of water-polluting liquids, and flammable liquids having a flash point of < 55°C.
The interstitial space of the double-walled pipeline must be suited for the connection and operation of this leak detector.
The leak detector can be used for monitoring of several underground pipelines utilizing a manifold.

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

Product images

Operating Conditions

The double-walled pipelines must be depressurized.
Leak detection fluid may not be present in the interstitial space of the container.
Appropriate manifolds together with a D29 leak detector may only be used for monitoring underground pipelines.

Accessories

Dryer / Drying Beads

LTR

By default, with V = 180 cm³

Selection of the air dryer for aboveground applications can be found in the technical description.

Function

Leak detector according to the principle of positive pressure with integrated pump and pressure relief.
The outside air is sucked through a vessel with dry beads (air dryer), which dries the air down to a relative humidity of <10%.
The saturation of the dry beads, depending on the humidity, is reached in about 12-15 months, identifiable by the color change, - initially orange - colorless at saturation.

Switching Values:

Alarm On P_AE = 1,1 bar

Pump Off P_PA = 1,5 bar

Overpressure Protection

Pressure relief valve of the pump opens at

P_SV = 1,65 bar

For further data please see the data sheet of the D29 leak detector.

Mounting Examples

Please click on the picture for a larger view!