Dosatron International

Pomagalski

Gregory Lucas

Christophe Charriere

David Vacher

Matthieu Darbois

Dominique Berton

Gilbert Barras

Jean-Claude Laurent

Mathieu Lefort

Alexandre Hardoin

Disclosed is a monitored proportional metering device including a liquid metering pump having an inlet, an outlet, a suction nozzle, and a mechanism for adjusting the flow in the nozzle. The metering device is also includes a detection assembly, the assembly including at least a unit for detecting the pressure variation in the nozzle, which unit is arranged between the first suction valve and the mixing chamber, a water meter at the inlet, a probe for measuring the level in the container of material to be suctioned, a unit for determining the position of the mechanism for adjusting the volume to be suctioned, and a man/machine interface for processing, recording, and displaying the data from the detection unit. Also disclosed are methods for monitoring a metering pump implementing the proportional metering device.

Supervised proportional metering device and methods for monitoring a metering pump

A device () for monitoring the operation of a dosage dispenser () which includes a suction pipe () suitable for being plunged into the liquid additive () contained in a container (), the monitoring device including elements for detecting the suction of liquid additive and elements for displaying operating parameters of the dosage dispenser; the detection elements include a tube (), separate from the suction pipe (), one end () of which is configured to be plunged into the container of liquid additive, and the other end () is kept stationary relative to the suction pipe in order to be located outside the container, the other end () being closed and provided with a sensor of the air pressure inside the tube, the sensor outputting an electrical signal, and elements for using the signal from the sensor, connected to the outlet of the sensor, to provide information on the operation.

Device for monitoring the operation of a dosage dispenser of a liquid additive in a main liquid, and dosage dispenser provided with such a device

A liquid metering pump includes an intake nozzle () provided with an intake valve () communicating with a working chamber () in which a piston () can be moved in an alternating translation movement, suction being produced, with the intake valve open, when the piston moves away from the nozzle, and delivery being produced, with the intake valve closed and liquid emerging through an outlet valve, when the piston moves towards the nozzle. The pump includes, between the intake valve () and the working chamber (), a device (D) for detecting the variation in pressure, the device (D) including a duct (), which is connected at one end to the working chamber () and is provided at its other end with the intake valve (), and an element () which is sensitive to the pressure in the duct, the element () being mounted in the wall of the duct.

Liquid metering pump, and device for detecting the variation in pressure for such a pump

A method for tensioning a cable uses a tensioning installation comprising a pulley over which the cable passes, a support trolley for the mobile pulley, on a guide rail and one or several linear actuators to move the trolley. The method allows for coupling an actuator, in a first position between a first support point fixed relative to the rail and a second support point fixed relative to the trolley such that the trolley moves on a first segment of the rail and the actuator is controlled as a function of the set tension of the cable decoupling the actuator from its first position; and coupling an actuator, in a second position between a third support point fixed relative to the rail and a fourth support point fixed relative to the trolley, at least one of the third support point or the fourth support point being distinct from the first support point and the second support point such that the trolley moves on a second segment of the rail and the actuator is controlled as a function of the set tension of the cable. A cable tensioning installation and a cable transport installation are described.

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Saint-Loubes, France

Gregory Lucas