|Flow Switches
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What length of straight piping is required on the IN side of a PF□ series digital flow switch?
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In order to maintain specification accuracy, a section of straight piping is required on the IN side. The required lengths are described below. Be sure to avoid using piping that suddenly changes the piping size on the IN side.
PF2A, PF2W, and PF2D series: Straight piping with a length of at least 8 times the piping port size
LFE series: Straight piping with a length of at least 5 times the piping port size PFMB, PFMC, and PF3W704/720/740/504/520/540 series: Straight piping with a length of 8 cm or longer
PF3W711/511 series: Straight PVC piping with a length of 11 cm or longer
PF3W721/521 series: Straight piping with a length of 2 cm or longer
