Capacitance Thickness Gauge / Displacement Gauge Frequently Asked Questions

The VE series gap detector performs calibration on a flat surface, so errors may occur when measuring curved surfaces, such as the sides of an axis.

For example, when the axis is rotated from an initial position of 1200 μm and a fluctuation of 400 μm is measured, the error as a fluctuation range is 0.8%/FS for an axis with a diameter of 20 mm and 0.2%/FS for an axis with a diameter of 100 mm. However, since the displacement error changes almost linearly, it is possible to correct it to some extent after measurement.

Example of error when using VE-1520 sensor
(Measurement range: 150 to 1500μm)