LRF-3000S Ultrasonic Transit-time Flow meter
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M04
Status
Display the Signal strength, the Upstream
signal strength and Downstream signal
strength.
Signal quality Q is indicated by 00 ~ 99.
Therefore, 00 indicates the poorest signal
while 99 indicates the best signal. Normally,
signal quality Q value should be better than
60
Display the measured fluid sound velocity.
Normally this value should be approximately
equal to the entered value in Window M12.
If the difference is too large, it probably
results from an incorrect value entered in
Window M12 or improper installation of the
transducers.
Display the ratio between the actual
measured transmit
time and the calculated transmit time
according to customer’s requirement.
Normally the ratio should be 100±3
％
. If the
difference is too large, the user should check
that the parameters are entered correctly,
especially the sound velocity of the fluid and
the installation of the transducers.
This data is of no use before the system is
ready.
Display the measured ultrasonic average
time (unit: us) and delta time of the upstream
and downstream (unit: ns) time. The velocity
calculation in the flow meter is based on the
two readings. The delta time is the best
indication that the instrument is running
steadily. Normally the fluctuation in the ratio
of the delta time should be lower than 20%.
If it is not, it is necessary to check if the
transducers are installed properly or if the
parameters have been entered correctly.
Q
85
Up
Dn
80.0
80.1
M04
Status
*R
Signal
Sound
Time
Vel.
Ratio
*R
Signal
Sound
Time
M04
Status
1482
100%
E+0
m
3
M04
Status
*R
Signal
Sound
Time
Total
185.0
Delta
30.5
us
ns
OD
108.0
mm
M10
Pipe settings
*R
Size
M.
thk
4.0
mm
