Corrosion rate measuring instrument of the utility model belongs to a measuring instrument, including the MCU main control unit, constant voltage unit and a three electrode sensor, the sensor is connected to the three electrode potentiostat unit, constant potential unit connected to the DC signal measuring unit and the AC signal measuring unit, DC signal measuring unit and the AC signal measuring unit are connected to the main control unit of MCU MCU, the main control unit is respectively connected to DC and AC applying unit applying unit, main control unit, MCU unit and AC DC applied applying unit is coupled to a constant potential unit. This instrument by AC impedance technology, high frequency sinusoidal signal on the corrosion system, high frequency signal through the electrochemical formed between the metal and the corrosion medium, double layer capacitance, so the high frequency signal is applied to the whole role in the medium resistance, medium resistance Rs which can get the accurate measurement of the corrosion system. The actual polarization resistance is obtained by subtracting the dielectric resistance from the polarization resistance measured by the linear polarization, and thus the corrosion rate is accurately obtained.
【技术实现步骤摘要】
腐蚀速度测量仪
本技术属于测量测试仪器,特别涉及一种腐蚀速度测量仪。
技术介绍
随着经济和工业化的发展,对金属材料的应用不断增长,从经济效益和社会效益方面考虑,迫切希望把金属腐蚀的破坏及损失降低到最低,使金属材料设备能够长期、安全的使用。目前,传统的监检测金属腐蚀的方法有挂片试验法、化学分析法、超声波法、电阻探针法、电化学方法等。之前的金属腐蚀监检测设备使用这些方法,有的检测周期长,有的测量精度低,有的不方便户外现场使用,都难以满足实际的应用需求。
技术实现思路
本技术的目的是为了克服现有技术的不足,提供一种金属腐蚀测量仪,该仪器操作简单,测量速度快,测量数据精度高,成本低。本技术的金属腐蚀测量仪,包括MCU主控单元、恒电位单元和三电极传感器,所述的三电极传感器的输出端联接至恒电位单元,恒电位单元的输出端分别联接至直流信号测量单元和交流信号测量单元,直流信号测量单元和交流信号测量单元的输出端均联接至MCU主控单元,MCU主控单元的输出端分别联接至直流施加单元和交流施加单元,MCU主控单元、直流施加单元和交流施加单元的输出端均联接至恒电位单元。作为本技术的进一步改进,所述的MCU主控单元与USB通讯单元通讯联接。作为本技术的进一步改进,所述直流施加单元包括数模转换器、差分放大器和运算放大器。数模转换器叠与比例放大器组成正负5V的直流电压输出,经过驱动器输出给恒电位单元。作为本技术的进一步改进,所述交流施加单元包括DDS信号发生器和电压跟随器。DDS信号发生器受MCU控制,产生交流信号,经过电压跟随器输出给恒电位单元。作为本技术的进一步改进,所述恒电位单元包括:比 ...
【技术保护点】
腐蚀速度测量仪,包括MCU主控单元、恒电位单元和三电极传感器,其特征在于三电极传感器的输出端联接至恒电位单元,恒电位单元的输出端分别联接至直流信号测量单元和交流信号测量单元,直流信号测量单元和交流信号测量单元的输出端均联接至MCU主控单元,MCU主控单元的输出端分别联接至直流施加单元和交流施加单元,MCU主控单元、直流施加单元和交流施加单元的输出端均联接至恒电位单元。
【技术特征摘要】
1.腐蚀速度测量仪,包括MCU主控单元、恒电位单元和三电极传感器,其特征在于三电极传感器的输出端联接至恒电位单元,恒电位单元的输出端分别联接至直流信号测量单元和交流信号测量单元,直流信号测量单元和交流信号测量单元的输出端均联接至MCU主控单元,MCU主控单元的输出端分别联接至直流施加单元和交流施加单元,MCU主控单元、直流施加单元和交流施加单元的输出端均联接至恒电位单元。2.如权利要求1所述的腐蚀速度测量仪,其特征在于MCU主控单元与USB通讯单元通讯联接。3.如权利要求1或2所述的腐蚀速...
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