FIELD: sampling of liquids from pipe-lines. SUBSTANCE: given device has sample intake tube which diameter and length are chosen from relationship 1: (12-30). Tube is installed in pipeline perpendicular to movement of flow and has inlet of slit shape on side of movement of flow. Profile of hole is chosen from condition of coming of liquid under positive pressure and pipe-line proportional to its flow rate in each elementary horizontal section of pipe-line with same proportionality factor and with average speed at inlet to sample intake tube equal to average speed of flow in pipe-line. EFFECT: enhanced reliability and simplified design of device. 2 dwg, 1 tbl
