超压检漏仪DL .. resp. DLG .. 监测罐体两侧的罐壁有泄漏情况。由于监测压力很高，只要有高于或者低于液位（仓储物和地下水位）的任何泄露都会被检测为压力的下降。 Overpressure leak detector DLG .. PM Overpressure leak detector operating with inert gas (nitrogen) as leak detection media in the interstitial space. With weatherproof design (P) and digital pressure indication (M). Especially designed for monitoring of: - liquids, which react sensitive when in contact with air (e.g. cosmetics, foods) - liquids, which are highly explosive Also for tanks with a permeable inner tank wall to store liquids with a flash point below 55°C. A nitrogen based system like the DLG … PM avoids the risk of permanent explosive vapours in the interstice. Every leak in one of the walls will be indicated by an optical and audible alarm before product enters the environment. (Class I-system in accordance to the European standard EN 13 160) Approved for the use together with: • double-walled tanks (e.g. DIN 6608, 6616) • single-walled tanks with an approved leak detection lining