Avl List Gmbh

Michael Buchner

Heribert Kammerstetter

Andre Steinhoefler

Martin Duerrwaechter

Michael Tauch

David Bischof

Thomas Rothlaender

Georg Lichtenegger

Patrick Tinauer

Jaime Diaz Fernandez

Vedran Burazer

Various embodiments of the present disclosure are directed to measuring methods for determining a flow rate of a process gas, contained in a gas pressure vessel charged with overpressure, escaping from the gas pressure vessel. In one example embodiment, the method includes: exerting a vessel weight force from the gas pressure vessel together with the contained process gas; compensating for the vessel weight force by means of a counterweight force exerted by a counterweight, or the counterweight force by means of the vessel weight force exerted by the counterweight, at least partially to a resultant measured weight force; determining the measured weight force at at least two points in time; and determining the flow rate of the process gas using the measured weight force determined at the at least two points in time.

Measuring method and measuring apparatus for determining a flow rate of a process gas

A measuring system for measuring a mass flow rate, a density, a temperature and/or a flow rate. The measuring system includes a main conduit which leads from a supply unit to a consumer, a measuring unit, a computing unit, and an outlet pressure controller. The measuring unit has a first Coriolis meter arranged in the main conduit, a second Coriolis meter arranged in series with the first Coriolis meter in the main conduit, a bypass conduit via which the second Coriolis meter is bypassable, and a valve which opens depending on a pressure arranged in the bypass conduit. The second Coriolis meter has a smaller maximum flow rate than the first Coriolis meter. The computing unit is connected to each of the first Coriolis meter and the second Coriolis meter. The outlet pressure controller is arranged in the main conduit downstream of the measuring unit.

Measuring system for measuring flow including two coriolis flow meters connected in series in a main conduit

A measuring system for measuring a mass flow rate, a density, a temperature or a flow velocity. The measuring system includes a main line, a first Coriolis measuring device arranged in the main line, a second Coriolis measuring device arranged in series with the first Coriolis measuring device in the main line, a bypass line which bypasses the second Coriolis measuring device, a first valve arranged in the bypass line, and a computing unit which is connected to the first Coriolis measuring device and to the second Coriolis measuring device. The first valve opens depending on a pressure. The first Coriolis measuring device is designed for a higher maximum flow rate than the second Coriolis measuring device.

Wide range flow measuring device having two Coriolis meters arranged in series and a bypass line to bypass the second Coriolis meter

The invention relates to a method and to a device for calibrating a pump () provided in a pump line (), the device comprising an actuator () for setting the pumping capacity of the pump (), and a control unit (). The device comprises a flow monitor () in the fuel line (). The control unit () is designed to substantially steadily vary the controlled variable of the actuator (), when starting the pump (), up to the switch point (SP) of the flow monitor (), and to ascertain and store a controlled variable associated with the respective switch point (SP), to ascertain a controlled variable difference value (&#x394;f) between a reference controlled variable (fR) stored for the pump () and the flow monitor () and a calibration controlled variable (fK) ascertained during the calibration, and to calibrate the controlled variable of the actuator () of the pump () based on the controlled variable difference value (&#x394;f).

Method and device for operating a pump

A fuel consumption-measuring system includes a feed line, a first pump which pumps fuel from a tank via the feed line to a consumer, a fuel consumption-measuring device in the feed line, a first return line which branches off at the consumer and opens into the feed line between the fuel consumption-measuring device and the consumer, a second return line which branches off from the feed line between the first pump and the fuel consumption-measuring device which opens into the tank, a branch which leads from the feed line into the second return line, a heat exchanger, and a flow device arranged in the first and second return lines. The flow device provides an equal volume flow at an opening of the first return line into the feed line and at the branch leading from the feed line into the second return line.

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Graz, Austria

Michael Buchner