ipH 200 of online pH electrode, adopt electrode measuring method, and realizes the automatic temperature compensation in the interior of the electrodes, Automatic identification of a standard solution. Electrode adopts imported composite electrodes, high precision, good stability, long lifetime, rapid response, low maintenance cost, real-time online measurement characters etc. The electrode using standard Modbus RTU (485) communication protocol, 12~24V DC power supply, four-wire mode can very co