What are Displacement Sensors (Displacement Gauges) and Dimension Measurement Systems?

ItemNon-contact typeContact type
Optical typeEddy current typeUltrasonic typeLaser focus method
Detection targetsMost targetsMetalMost targetsMost targetsSolid
Measurement distanceNormalShortLongShortShort
AccuracyHighHighLowHighHigh
Response speedFastFastSlowNormalSlow
Dust, water, oil, etc.PoorStrongNormalNormalStrong
Measurement surfaceSmallNormalLargeSmallSmall