Document No LM0670 Issue A Rev 2 November 2017 Page 4 of 15
FLOW PULSATION:
The VFF series meters can be affected by pulsing flow rate particularly if there are severe flow rate
variations in terms of the nominal flow. Sometimes a damping value can be utilized in the electronics to
provide a smoother displayed value of flow rate.
Positive displacement meters ‘follow’ the flow rate changes and therefore may appear to give an unstable
reading. A correctly chosen filter value in the instrumentation may be used to stabilise the meter reading
and/or output.
COMMISSIONING and START-UP:
Before commissioning and start up Litre Meter recommend that this entire manual is
read. Pay attention to these sections:
Mechanical Installation and
FAT Issues.
Understanding the VFF flowmeter, previous customer experience and its operating
parameters will greatly improve any Factory Acceptance Test but also ease
commissioning and initial start-up.
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