The PE4332 Pulse Eddy Current Flaw Detector allows us to plot the C-scan

To visualize the results of thickness measurements of the object, we use a C-scan diagram, which is essentially a color map of surface thicknesses.

The PE4332 Pulse Eddy Current Flaw Detector allows us to plot the C-scan in two different ways. The first option is to take measurements on a grid.

We can draw the grid on the pipe using a chalk or, which is much easier, we can use a ready-made grid on a self-adhesive film.

Then, let’s set the parameters of the grid cells and the color palette in the device settings
and take measurements by positioning the sensor in the nodes one by one. The sensor has a display that shows the current coordinate and the measured thickness and control buttons, so the C-scan is plotted quickly.

For measuring long pipe sections when the cable length is not enough, the device can be carried by using a harness, which is included in the scope of the device supply.

The second option of plotting the C-scan is useful when the required grid is unavailable and you have not time or possibility to chalk it out. A special wheel can be attached to the sensor. Using this wheel, you can carry out the test with lines. The wheel encoder will measure the horizontal coordinate of the sensor, and the operator shall take measurements at equal intervals.
With both options, we will get the same color scheme of the pipe section and the boundaries of the thickness difference are clearly visible on the plotted C-scans; the red zone with a wall thickness of less than 5 mm is especially noticeable. The plotted C-scans are saved in system memory and can be later downloaded to the PC in both graphical and tabular form as well as a report on the test results can be generated in customized application EM-Viewer.