YOKOGAWA 2-Wire Dual Channel Transmitter/Analyzer FLXA21Overview 2 Wire Dual Channel Transmitter Analyzer FLXA21 The FLXA21 is 2 wire module type liquid analyzer that can be connected to up to two detectors from pH ORP meters, conductivity meters, inductive conductivity meters, and dissolved oxygen meters. By connecting two detectors of the same type, a more reliable system can be constructed as a high precision duplex system. And the impedance, asymmetric potential, slope, etc. of the detector are