TK-R72 Concrete resistivity and steel corrosion tester. It has steel corrosion meter and concrete resistivity. It can simultaneously use the concrete resistivity method and the half-cell potential method to detect the corrosion degree of the steel bars in the concrete. It has multiple functions. And the test results of the two methods can be mutually verified to determine whether rust occurs in the concrete.

1. <Technical standard for building structure inspection GB/T50344-2004>
2. <Technical specification for steel bar detection in concrete JGJ/T 152-2008>
3. <Regulations for testing and evaluating highway bridge bearing capacity JTGT J21-2011>

1. Two test methods are used to test the corrosion degree of the steel bars inside the concrete. The half-cell potential method and the resistivity method are suitable for different test sites, and the two test results can be mutually verified to further determine the degree of corrosion inside the concrete.
2. The corrosion test uses a permanent reference electrode. The saturated copper sulfate solution is sealed in the reference electrode, no need to replace the solution before and after the test, the operation process is simple, clean, and pollution-free.
3. The corrosion test automatically detects the ambient temperature. The instrument contains an automatic temperature measurement module, which can automatically test, record, and display the ambient temperature on site without the need for an additional thermometer, which is convenient and quick.
4. The resistivity test method is simple. Using the traditional four-electrode method (Winner quadrupole method), the sponge plug sensor ensures good electrical contact, and it can be tested on the surface without breaking or drilling concrete;
5. Including standard blocks. There is a standard test block to ensure the reliability of the measurement results;
6. The instrument can set the test date. Data saving test date, convenient for user data management;
7. Powerful professional windows data analysis and processing software. Express the test results in the form of graphic images (spectrograms, contours, etc.), you can directly generate Word test reports or import data into Excel, which is convenient and quick

1. Measuring range 0~300 kΩcm；0~3000 kΩcm
2. Test accuracy ±1 kΩcm
3. Resolution 0.1 kΩcm
4. LCD 160*128

1. Measuring range ±2000mV
2. Test accuracy ±1mV
3. Measuring point spacing 1～99cm Can be set
4. Working environment requirements Ambient temperature: -10℃～＋40℃, Avoid direct exposure to the sun for a long time；
5. Relative humidity: <90%RH；
6. Electromagnetic interference: No strong alternating electromagnetic field；
7. 6 AA alkaline batteries, power supply time is more than 30 hours

The external software has powerful data analysis and processing functions: the real USB port transmission of data; the data can be imported into Word and Excel, which is convenient for the user's later data processing, and the data can be saved and printed.