DL 330 - overpressure leak detector with integrated pump within plastic housing for the monitoring several underground tank or one aboveground tank.
Type with alarmpressure in mbar:
DL 330
Tanks:
double walled cylindrical laying tanks with a non permeable inner wall and a test pressure of the interstitial space of 500 mbar, e.g. DIN 6608, 6616 or EN 12285 or other approved tanks