voomaht maksimaalse ja minimaalse voo vahel, milles voomaht on jagatud kaheks, st ülemiseks ja alumiseks tsooniks, kusjuures iga tsoon omab oma MPE karakteristikut, flow rate occurring between the maximum and minimum flow rates at which the flow rate range is divided into two zones, the upper zone and the lower zone, each zone having a characteristic MPE, flow rate which occurs between the maximum flow rate Qmax and the minimum flow rate Qmin that divides the flow rate range into two zones, the “upper zone” and the “lower zone”, each characterizedby its own maximum permissible error, flow rate between the permanent flow rate and the minimum flow rate that divides the flow raterange into two zones, the upper flow rate zone and the lower flow rate zone, each characterizedby its own maximum permissible errors, püsivoomahu ja väikseima voomahu vaheline voomaht, mis jaotab voomahu vahemiku kaheks tsooniks, ülemise voomahu tsooniks ja alumiseks voomahu tsooniks, millest igaüks omab oma lubatavat mõõtehälvet, flow rate occurring between the maximum and minimum flow rates at which the flow rate range is divided into two zones, the "upper zone" and the "lower zone"