FIELD: oil industry. SUBSTANCE: invention is meant to determine mass of oil product placed into transportation vessel under high pressure up to 16 105 Pa. Gear includes additional vessel in the form of two U-shaped tubes, height of sag of one tube being fixed and that of the other tube being unspecified. One pair of ends of tubes is connected to pair of inlets of hydrostatic pressure meter whose outlet are fitted with drainage valves. The other pair of ends is linked to valves of container-tank: end of tube of unspecified height of sag is joined to level-measuring and drainage valve and end of tube of fixed height of sag is linked to discharge valve. At highest point tubes are interconnected by means of equalizing valve. EFFECT: simplified and compact design of gear that makes it possible to be included in set of equipment to attend to operation of container-tank. 1 dwg
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