Uluhlu lwe-JEF-300 lwe-electromagnetic flowmeter lubandakanya inzwa kunye nesiguquli.Isekelwe kumthetho kaFaraday wokufakelwa kwe-electromagnetic, esetyenziselwa ukulinganisa ukuhamba kwevolumu yolwelo oluqhubayo kunye ne-conductivity enkulu kune-5μs / cm.Yimitha ye-inductive yokulinganisa ukuhamba komthamo we-conductive medium.