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D-546-9-E
You can effectively get around the problem of erratic pulse generation attributable to noises of pipeline
oscillation, pulsating flows, etc. with no flow by selecting a higher TLV pot position.
The trigger level is factory adjusted to 160mV p-p before shipment.
① With increasing trigger level, the flow sensitivity decreases relative to that ratio of trigger level (sensitivity
ratio).
Example: When a trigger level 160mV p-p is increased to 350mV p-p, the resultant sensitivity declines by a
factor 160/350 ≒ 1/2.2 (sensitivity ratio).
② When sensitivity is changed, the resultant minimum flowrate (measurable low limit flowrate) is
approximately the default minimum flowrate multiplied by 1/(Sensitivity ratio).
Example: When a trigger level 160mV p-p is increased to 350mV p-p, the resultant minimum flowrate is
approximately 350/160 ≒ 1.48 times the minimum flowrate.
