Product Manual

Wall Mounted Ultrasonic Flowmeter---User Manual
15
different with that in the flash memory, the system will store your current parameters into
the flash memory and then boot again. By doing so, the parameters will always get lost,
even when both the power supply and the backup battery are removed.
M27
Entry to store to or restore from the internal Flash memory, as many as 9 different pipe
parameter configurations
To save or load the current setup parameter, use the going up or going down keys to
change the address number, press ‘ENT’ key, and use going down or going up keys to
select to save to or lo
a
d from the memor
y
.
M28
Entry to determine whether or not to hold (or to keep) the last good value when poor signal
condition occurs. YES is the default setu
p
.
M29
Entry to setup empty signal threshold. When the signal is less than this threshold, the pipe
is regarded as empty pipe, and the flow meter will not totalize flow.
This is based on the fact that, for most occasions, when pipe is empty, the transducer
would still receive signal, just smaller than normal, As a result, The flow meter would
show normal operation, which is not correct.
Make sure that the entered value must be less than the normal signal strength.
When much noisy signals are received, to make sure the flow meter will not incorrectly
totalize flow, there is also a ‘Q’ threshold should
b
e entered in M.5
M30
Window for selecting unit system. The conversion English to Metric or vice versa will not
affect the unit for totalizers.
M31
Window for selecting flow rate unit system.
Flow rate can be in
0. Cubic meter short for (m
3
)
1. Liter (l)
2. USA gallon (gal)
3. Imperial Gallon (igl)
4. Million USA gallon (mgl)
5. Cubic feet (cf)
6. USA liquid barrel (bal)
7. Oil barrel (ob)
The flow unit in terms of time can be per day, per hour, per minute or per second. So there
are 32 different flow rate units in total for selection.
M32 Window for selecting the totalizers unit. Available units are the same as those in M31
M33
Window for setting the totalizer multiplying factor
The multi
p
l
y
in
g
factor ran
g
es from 0.001 to 10000. Factor
y
default is 1
M34 Turn on or turn off the NET totalize
r
M35 Turn on or turn off the POS
(p
ositive
)
totalizer
M36 Turn on or turn off the NEG
(
ne
g
ative
)
totalizer
M37
(1) Totalizer reset
(2) Restore the factory default settings parameters. Press the dot key followed by the
backspace key. Attention, It is recommended to make note on the parameters before doing
the restoration
M38
Manual totalizer used for easier calibration. Press a key to start and press a key to stop the
manual totalizer.
M39 Interface Lan
g
ua
g
e selection.