Chapter 5 Operating instructions
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(5) method has been selected properly, the pipe is not worn-out, and the liner is
not too thick. Make sure there is indeed fluid in the pipe or the transducer is
not too close to a valve or elbow, and there are not too many air bubbles in
the fluid, etc. With the exception of these reasons, if there is still no signal
detected, the measurement site has to be changed.
(6) Make sure that the flowmeter is able to run properly with high reliability. The
stronger the signal strength displayed, the higher the Q value reached. The
longer the flowmeter runs accurately, the higher the reliability of the flow rates
displayed. If there is interference from ambient electromagnetic waves or the
signal detected is too poor, the flow value displayed is not reliable;
consequently, the capability for reliable operation is reduced.
(7) After the installation is complete, power on the instrument and check the
result accordingly.
Chapter 5 Operating instructions
5.1. System normal indentification
Press the
keys. If the letter "*R" displays on the screen, it
indicates system normal.
If the letter "G" is displayed, it indicates that system is adjusting the signal gain
prior to the measurement. Also, it means system normal. Only when the
adjustment takes too long without stopping, can system be identified as abnormal.
Letter "I" indicates no signal is being detected. Check the transducer wiring
connections are correct, the transducers are installed firmly, etc.
5.2. Zero set calibration
Once zero flow occurs, a zero point may indicate on each measuring instrument,
but the displayed measuring value is not equal to "0", this value indicates "Zero".
To any measuring instrument, the smaller the "Zero" is, the better the quality is.
Conversely, if the Zero is too big, that indicates the quality of the instrument is
poor.
If the zero set point is not at true zero flow, a measurement difference may occur.
The smaller the physical measurement capacity is, the larger the measurement
