Method for measuring in a fluid with the aid of sing-around technique
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United States of America Patent
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Aug 18, 1998
Grant Date -
N/A
app pub date -
Oct 23, 1995
filing date -
Oct 24, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
During sing-around-type measurement in a fluid, a transmitter repeatedly transmits sound pulses in the fluid, and these sound pulses are received by a receiver, which acoustically is disposed opposite to the transmitter. The detection of the reception of a sound pulse at the receiver triggers the transmission of a subsequent sound pulse by the transmitter. In order to avoid any interference from multiple-reflected sound pulses, a delay is produced with the aid of the frequency of the received sound pulse, and the transmission of the subsequent sound pulse by the transmitter is triggered with this delay.
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