Low Cut Off

inaccuracy, would be one consideration.

does that help?

Indicated flow is zero flow below low flow cutoff point.

Low flow cutoff may well be a software thing.

You would need to say what type of flow meter you have and what type of control system to get a meaningful answer.

Low Flow Cutoff is a paramater that can be used to FORCE the output signal of the transmitter to the zero flow signal (4mA, 1V, 0Hz.....) even when there might be either some flow or error that looks like flow. Usually, initially, invented for D.P. Transmitters configured for square root extraction where the high gain part of the square root curve is at the low end of the flow curve. This means a 1% error near 100% flow is not much of problem, but down at 3% flow can be a 5%-10% error, which is a problem. One usually sets a low cutoff at around 5% so that any flow under 5% will be forced to read 0%. Also useful for nullifying nuisance negative flows and almost zero flow creep on totalisers.

Rok