Jiangong Tianjin Huayin Instrument Technology Co., Ltd. the ZBL-C310 steel corrosion detector structural concrete rebar rust to make reinforced effective cross-sectional area decreases, the volume increases, resulting in concrete expansion, peeling, reinforced concrete bond strength and carrying capacity to reduce the direct impact on the safety and durability of the concrete structure. Therefore, the detection of the extent of corrosion of internal reinforcement of concrete structures is an important part of the structural safety assessment of existing buildings identified. The ZBL-C310 steel corrosion detector developed special instruments in accordance with the technical standards of the building structure detection in electrochemical measurement method (natural potential method). Using the the polarized electrodes principle, copper / sulfur the suan copper reference electrode to measure the concrete surface potential and take advantage of the natural potential of the common law to determine the degree of reinforcement corrosion. 1, the application field of the extent of corrosion of reinforced structural concrete nondestructive testing, in advance before the rust and cause a major accident. 2, according to the standard "building structure detection technology standard ----------------GB/T50344-2004 3, the performance characteristics of easy operation, the test results are displayed in numeric or graphical way; measuring point fast, stable readings, changes in potential readings does not exceed 2mv; scientific classification decision result more realistic and reliable; degree of reinforcement corrosion graphical display gray-scale or color grade 9 and potential range corresponding to draw potential contour map, contour the line difference can be set (50mv ~ 100mv); powerful professional analysis software can automatically generate a test report. 4, the name of the technical parameters name technical indicators technical indicators measuring potential ± 1000mV power supply 9V DC (6 AA batteries), working time> 30 hours measurement accuracy 1mV display 160 × 128 the reflective LCD data storage 70 sets of measurements data host size 225mm × 180mm × 80 dot pitch set 1 ~ 60cm the optional electrode size φ30mm × 180mm measurement area of ??84.24 square meters (measured point spacing 60cm) host weight 600g