Werth Messtechnik Measuring in unstable temperature conditions

Editor: Briggette Jaya

Germany – The machine, the operator, the object to be measured and environmental conditions are factors that influence the result in measuring.

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Werth's coordinate measuring machines with temperature correction.
Werth's coordinate measuring machines with temperature correction.
(Source: Werth Messtechnik)

The temperature has a substantial influence on measurement uncertainty. For correct measurement, both the measuring machine and the workpiece must ideally maintain a temperature of around 20 °C and it should remain constant over time and space. Such optimal measurement conditions are often not available. Therefore, correcting temperature-induced measurement deviations is critical for many users.

Automatic correction of measurement deviations resulting from differences between the ambient temperature and the reference temperature of 20°C is standard for all Werth coordinate measuring machines.

According to the company, its coordinate-measuring machines with temperature correction can determine and correct the effects on the behavior of the measuring machine itself, for example, the expansion of the scale. The thermal expansion coefficient of the measuring object is treated as 11 µm / K m, which is the value for steel. This means that measuring objects and standards made of steel and materials with similar thermal expansion coefficients can be measured at a very low measurement uncertainty despite temperature deviation.

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