The bowling hole is compatible with a diameter of φ86, allowing installation even with narrow diameters. The installation process has been simplified, and the release wire disengagement step is no longer necessary.

The current KLC-50A was installed with the initial position fixed and released with a release wire.
However, it was not possible to confirm whether the fixation was released, and there was a possibility that it remained fixed.
This time, the fixing mechanism was eliminated and the method was changed to adjust the initial position while pulling up the main body of the KLC.
After installation, the sensor's movable part and the grout were completely disconnected to ensure that the ground behavior could be accurately captured.