Measure the surface shape of a plate that turned red at a high temperature of 1000℃.
Until now, they had been using lasers for measurements, but they had the following problems.

1．It costs too much.
2．Some cloudy laser monitor lens causes errors.
3．Reflection on the tapered surface is weakened, creating areas that cannot be measured.
4．It cannot withstand too high a temperature.

We recommended our capacitive gap sensor to them.They were able to trace the surface shape of the plate because they were able to control the XY stage so that the gap sensor always had the same output (for example, 1V), keeping the distance between the electrode and the plate constant.