SUPMEA SUP-2100H Series, Руководство пользователя

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Chapter 2 Starting Measurement
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2.8.5 N-method Installation
Rarely used method.
2.9 lnstallation Checkup
Through the checkup of the installation, one can: check the receiving signal
strength, the signal quality Q value, the traveling time difference of the signals, the
estimated liquid speed, the measured traveling time of the signals and the
calculated traveling time ratio. Therefore, optimum measurement result and longer
running time of the instrument can be achieved.
2.9.1 signal strength
signal strength indicates the amplitude of receiving ultrasonic signals by a 3-digit
number. [000] means there is no signal detected, and [999] refers to the maximum
signal strength that can be received.
Although the instrument works well if the signal strength ranges from 500 to 999,
stronger signal strength should be pursued, because a stronger signal means a
better result. The following methods are recommended to obtain stronger signals:
(1) Relocate a more favorable location, if the current location is not good enough
for a stable and reliable flow reading, or if the signal strength is lower than 700.
(2) Try to polish the outer surface of the pipe, and apply more coupler to increase
the signal strength.
(3) Adjust the transducers both vertically and horizontally while checking the
varying signal strength, stop at the highest position, and then check the
transducers spacing to make sure the transducers spacing is the same as what the
M25 shows.