kontaktimittauksin

Kontaktimittauksin is a Finnish term used in measurement science to indicate that data are collected by direct physical contact between a measuring probe and the object being studied. It describes a class of methods in which the sensor maintains contact during the measurement, in contrast to non-contact techniques such as optical, acoustic, or electromagnetic sensing. The term is common in Finnish technical literature and documentation, including profilometry, coordinate measuring technology, and materials testing.

In practice, kontaktimittauksin covers methods such as stylus profilometry, where a diamond tip traces a surface to determine roughness and topography, and touch-probe coordinate measuring machines (CMMs), where the probe touches reference features to determine geometry. It can also include tactile sensors and contact-based measurements that rely on physical contact to acquire a signal. The choice of kontaktimittauksin depends on factors like surface properties, required resolution, measurement speed, and potential damage to the sample.

Advantages include high spatial resolution and direct interaction with the surface, minimal reliance on clear line-of-sight, and compatibility with reflective or opaque materials. Limitations include the risk of scratching or deforming soft surfaces, probe wear, slower measurement speeds, and the need for precise force control to avoid deformation. The method is routinely contrasted with non-contact approaches whenever surface integrity and direct surface interaction are central to the measurement objective.