Title:
DEVICE FOR DETERMINING AND/OR MONITORING THE VOLUME AND/OR MASS FLOW RATE OF A MEDIUM
Document Type and Number:
WIPO Patent Application WO2004083784
Kind Code:
A3
Abstract:
The invention relates to an ultrasonic flow measuring device (1) comprising at least one ultrasonic sensor (5: 6) and a control/evaluation unit (11) which is embodied in such a manner that it sends, receives and evaluates ultrasonic measuring signals at least in a first frequency range and in a second frequency range. The first frequency range is activated or can be activated when said medium (4) is a gaseous medium and the second frequency range is activated or can be activated when said medium is a liquid medium.
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Inventors:
FROEHLICH THOMAS (CH)
BERGER ANDREAS (CH)
BUSSINGER KLAUS (CH)
BERGER ANDREAS (CH)
BUSSINGER KLAUS (CH)
Application Number:
PCT/EP2004/002746
Publication Date:
November 11, 2004
Filing Date:
March 16, 2004
Export Citation:
Assignee:
FLOWTEC AG (CH)
FROEHLICH THOMAS (CH)
BERGER ANDREAS (CH)
BUSSINGER KLAUS (CH)
FROEHLICH THOMAS (CH)
BERGER ANDREAS (CH)
BUSSINGER KLAUS (CH)
International Classes:
G01F1/66; (IPC1-7): G01F1/66
Foreign References:
| DE1094471B | 1960-12-08 | |||
| US6354146B1 | 2002-03-12 | |||
| EP0446023A1 | 1991-09-11 | |||
| DE19617961A1 | 1997-11-13 | |||
| US4312238A | 1982-01-26 |
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