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Ultrasonic flow meter

A flow measurement device, ultrasonic technology, applied in the direction of measurement device, flow measurement/mass flow, liquid/fluid solid measurement, etc. The effect of braking, small size, low manufacturing cost

Inactive Publication Date: 2013-08-28
ENDRESS HAUSER FLOWTEC AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the reduced sound opening that can be blocked in the case of fluids with solid parts, this device leads to a weakening of the desired signal and, in the case of use in liquids, to possible air entrapment, which likewise adversely affects all required signal strength

Method used

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Examples

Experimental program
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Embodiment Construction

[0025] figure 1 An ultrasonic flow measuring device according to the invention is shown comprising an ultrasonic transducer 5 in a bore 4 of a measuring tube 2 . The ultrasound transducer 5 has an ultrasound window 6 . In this case, the first guide vane 7 is inserted into the bore 4 of the measuring tube 2 in front of the ultrasound window 6 and perpendicularly to the ultrasound window 6 of the ultrasound transducer 5 . The ultrasonic flow measuring device is an in-pipe ultrasonic flow measuring device, which includes a measuring tube 2 . The ultrasound window 6 is also called active area. Via this ultrasound window 6 , ultrasound signals are decoupled from the ultrasound transducer 5 or coupled into the ultrasound transducer 5 .

[0026]The hole 4 of the measuring tube 2 , or rather the hole 4 in the wall 3 of the measuring tube 2 in which the ultrasonic transducer 5 and the first guide vane 7 are inserted, has a longitudinal axis (not shown). For the differential travel ...

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PUM

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Abstract

The invention relates to an ultrasonic flow meter, comprising an ultrasonic transducer (5) in a bore hole (4) of a measuring tube (2), wherein said ultrasonic transducer (5) comprises an ultrasonic window (6), wherein a baffle plate (7) is inserted in the bore hole (4) of the measuring tube in front of the ultrasonic window (6) and perpendicularly to the ultrasonic window (6) of the ultrasonic transducer (5).

Description

technical field [0001] The invention relates to an ultrasonic flow measuring device comprising an ultrasonic transducer in a bore of a measuring tube, wherein the ultrasonic transducer has an ultrasonic radiating surface, referred to herein as an ultrasonic window. Background technique [0002] Ultrasonic flow measuring devices are often used in process and automation technology. They allow simple determination of volume flow and / or mass flow in pipes. [0003] Known ultrasonic flow measuring devices generally work according to the Doppler principle or according to the transit time difference principle. In the travel time difference principle, the different travel times of ultrasonic pulses are evaluated depending on the flow direction of the liquid. For this reason, ultrasonic pulses are sent at a certain angle relative to the tube axis in the flow direction and in the opposite direction to the flow direction. By means of the travel time difference, the flow velocity and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/66
CPCG01F1/662
Inventor 奥利弗·贝尔贝里戈
Owner ENDRESS HAUSER FLOWTEC AG