The rotameter flowmeter ndi mita yoyenda mosiyanasiyana yomwe imagwira ntchito molingana ndi mfundo yoyezera malo oyandama. / ^
Pamene madzi akuyenda kudzera mu flowmeter, kutuluka kwa madzi kumakhudza rotor ndi kupanga mphamvu pa iyo, kukula kwake komwe kumasiyana ndi kuthamanga kwa kayendedwe kake. Panthawiyi,
utali wa malo a rotor ndi wofanana ndi kuthamanga kwa madzimadzi, ndipo kuthamanga kumawonetsedwa kudzera mu chizindikiro.
