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Device and method for identifying and correcting erroneous volume flow measurements

A technology of volume flowmeter and flow rate, which is applied in the direction of volume flow measurement device, mass flow measurement device, test/calibration volume flow, etc., and can solve problems such as unreliability and pressure difference

Pending Publication Date: 2022-04-15
ENDRESS HAUSER FLOWTEC AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has become apparent that this pressure difference can also be unreliable

Method used

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  • Device and method for identifying and correcting erroneous volume flow measurements
  • Device and method for identifying and correcting erroneous volume flow measurements
  • Device and method for identifying and correcting erroneous volume flow measurements

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Embodiment Construction

[0043] figure 1 A device 1 according to the invention is shown with a Coriolis measuring device 20 having a measuring tube 21 arranged in a pipeline 10 . The inlet 21.1 of the measuring tube 21 is connected in the upstream part 11 of the pipe and the outlet 21.2 is connected to the downstream part 12 of the pipe. Coriolis measuring devices can also have more than one measuring tube; the illustrations chosen here are only meant to be explained as examples and not as a limitation. The first pressure sensor 31 and the first monitor sensor 41 are arranged at the inlet side portion of the pipe 11 , and the second pressure sensor 32 and the second monitor sensor 42 are arranged at the outlet side portion of the pipe 12 . Alternatively and / or in addition to the pressure sensor, a differential pressure sensor 33 can also be provided, as schematically illustrated here. The positioning of the sensors 31 , 32 , 33 , 41 , 42 relative to each other is merely exemplary. For example, sens...

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PUM

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Abstract

The invention relates to a device (1) comprising: a conduit (10); a Coriolis volume flow meter (20) for measuring the mass flow rate of the medium flowing through the conduit; wherein the first pressure sensor (31) is attached in or on the inlet side portion of the pipe, and the second pressure sensor (32) is attached in or on the outlet side portion of the pipe, and / or wherein the first pressure sensor (31) is attached in or on the inlet side portion of the pipe, and the second pressure sensor (32) is attached in or on the outlet side portion of the pipe. A pressure difference sensor (33) configured to detect a pressure difference between the inlet-side portion of the pipe and the outlet-side portion of the pipe, where the pressure sensor and / or the pressure difference sensor are configured to measure a pressure of the medium and to determine a volumetric flow rate of the medium through the pipe for each determination of the pressure difference; wherein a first monitoring sensor (41) is attached in or on an inlet-side portion of the pipe and a second monitoring sensor (42) is attached in or on an outlet-side portion of the pipe, and wherein the monitoring sensors are configured to monitor a measurement variable different from a pressure of the medium in order to identify a static state of the medium.

Description

technical field [0001] The present invention relates to devices and methods for identifying and correcting erroneous volume flow measurements in Coriolis volume flow meters. Background technique [0002] As shown, for example, in DE 10 2015 120 087 A1, in the case of liquids with gas inclusions or entrained gases, Coriolis volumetric flowmeters have a reduced measurement accuracy. This can be compensated by measuring the pressure difference between the inlet and the outlet of the measuring tube of the Coriolis measuring device, since in the case of low flow rates a better specification of the flow rate can be made on the basis of this pressure difference. However, it has become apparent that this pressure difference can also be unreliable. Contents of the invention [0003] It is therefore the object of the present invention to propose a device and a method for reliable volume flow measurement. [0004] This object is achieved by a device according to independent claim 1...

Claims

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Application Information

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IPC IPC(8): G01F1/36G01F1/74G01F1/84G01F7/00G01F25/10
CPCG01F1/84G01F1/36G01F7/005G01F1/74G01F25/10
Inventor 阿尔弗雷德·里德朱浩沃尔夫冈·德拉赫姆安德烈亚斯·居特勒
Owner ENDRESS HAUSER FLOWTEC AG