Abstract: The object of the invention is to so design a flow-meter system for milk-collecting vehicles, that a pump, a pulse-controlled sampling device, an air separator and a flow-meter with pulse generator and display are in series in the operational direction, where a computer is provided in the display for analysis, in that independently of the particular quantity delivered, Automatically always the same amount of sample shall be withdrawn, whereby an adepquate amount of sample shall be available for analysis even for small quantities delivered, and where addiional containers are not needed for large quantities delivered, and where overrunning is avoided.

Abstract: Apparatus for removing liquid samples, especially milk samples, from a flow facility wherein a feed pump, an electromagnetically actuated and normally closed metering valve physically located at a higher level than said feed pump, an air eliminator and a volume meter are sequentially arrayed downstream. The metering valve (7) is connected to flow line (6) by a short connecting pipe (15) sealed by closing element (11), the drain tube (8) of this valve leads to a sample container located above closing element (11) and defined by channel (14) traversed by valve shaft (13), which leaves annular gap (29) between the outer surface of the valve shaft (13) and the wall of channel (14) and which is large enough as to just suffice in cross-section to pass the amount of liquid sample to be removed.

Abstract: An improvement in the apparatus for flow metering liquids, especially milk, when the liquids are delivered from tank trucks to stationary tanks having a first centrifugal pump, an air eliminator and a volume meter sequentially arranged in that order downstream of the tank truck. The improvement involves locating a second centrifugal pump downstream of the air eliminator which acts as a quantity control pump.