Abstract: A device for indicating the interval for the flow of a predetermined volume of fluid. The fluid flow measurement device includes a housing having a cavity therein for being interposed along a fluid line. A flexible diaphragm having a convolution therein is included within the cavity for dividing the cavity into a first and second chamber. The flexible diaphragm prevents the flow of the fluid between the first and second chambers. A fluid port connects the second chamber to the fluid flow line. A fluid outlet connects the first chamber to the fluid flow line. The apparatus also includes a bypass for diverting the fluid flow from the fluid port of the second chamber through a fluid inlet into the second chamber, whereby the fluid flowing into the second chamber will displace the flexible diaphragm into the first chamber thereby expelling the predetermined volume of fluid from the first chamber.

Abstract: A sample fraction collector for sequentially collecting a plurality of samples of uniform volume despite variations in sample flow rate and/or viscosity comprises means defining a sample chamber, an outlet conduit means having a rotatable valve means therein, rack means for sequentially positioning a plurality of individual receptacles beneath a dispensing outlet of said outlet conduit means, a generally U-shaped tube for holding an electrolytic solution with first and second electrode means positioned in one leg and a pressure tube communicating between the other leg and the sample chamber. A control system is actuated by the electrolytic solution contacting both electrode means to energize the rack means to the next position and then to rotate the valve means to the open position for a period of time to drain the sample chamber.

Abstract: A device for metering by weight the delivery of liquids, comprising a container for the liquid fed through an electrovalve and having a delivery aperture and a spillway; a metering body immersed in said liquid and anchored in rest position by anchoring means; a mechanical-electric transducer inserted between the metering body and the container for the liquid, and connected to a first, to a second, and to a third comparator, in order to drive the first comparator and the third comparator, which through a first flip flop and an amplifier control the closure and the aperture of the electrovalve, respectively, as well as the second comparator, also driven by the transducer in order to control through a second flip flop a timer and a voltmetric digital indicator driven in turn by the transducer; an external generator controlling through a push switch both said flip flops.

Abstract: The invention relates to a device for measuring the quantity of a flow of fluid from fluid storage means such as liquefied gas. The device comprises a capacitor partially immersed in the stored fluid which includes a chamber being partially filled with the fluid. As fluid is drained from the capacitor, the timing and variations in capacitance are measured which is used to calculate quantity of flow.