ZBL-C310A is a specialized apparatus; it is designed according to the electrochemical testing method (natural potential method) of ¡°construction testing technical standard¡±. By using the electrode polarization theory, C310A tests the potential of concrete surfaces through a Cu/CuSO4 reference electrode, and determines the level of rebar corrosion with the commonly used natural potential method. Feature: ¡ñ Data transfer to usb-thumb drive is available, very convenient for field work; ¡ñ The device generates rebar distribution maps and rebars corrosion potential contour graphs; ¡ñ Powerful professional analysis-process software facilitates the generation of test reports automatically.