Chapter 3 How to use
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3.7 How to zero the flow accumulator
Use M37 to select the accumulator to be zeroed.
3.8 How to restore factory settings
When "Select operation" is displayed in window 37, press and then press
to
restore the parameters entered by the user. The parameters entered by the user
are restored to the original factory settings.
3.9 How to use the damper to stabilize the flow display
The function of the damper is to stabilize the flow display, which is essentially a
section filter. Enter "0" in the window M40 to indicate no damping. Of course, the
larger the value of the flowmeter display the more stable the instantaneous flow, it
is generally recommended that the user enter a value of about 30 seconds, the size
of this value will not have any effect on the cumulative flow.
3.10 How to use zero cut to avoid invalid accumulation
The data in window 41 is called the low flow rate cut-off value. The flowmeter treats
flow rates below this value as "0" in absolute terms. This parameter can be set to
avoid a false accumulation of measurement errors generated by the meter when
the true flow rate is "0". In general, set this parameter to 0.03m / s.
When the actual flow rate of the pipeline fluid is greater than the low flow rate
cut-off value, the low flow rate cut-off value and the measurement results are
irrelevant, never affect the measurement results.
3.11 How to statically calibrate the zero point
When the flow in the pipe completely stopped, the flowmeter will not show "0", but
a small "zero value", then you can set the zero point to achieve the purpose of
accurate measurement.
Unify through the M42 window to complete this function.
The requirement is to recognize the liquid flow in the pipe must be completely
stopped after the flow, enter the M42 window, press
to start.
3.12 How to modify the meter coefficient (scale factor) calibration calibration
The scale factor is the ratio of the "true flow" to the flow measured by the meter.
The scale factor can be obtained from the real flow test of the calibration device.
