Temperature Influences

Invisible to the naked eye

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Temperature fluctuations are barely perceptible. You can't see or hear them, and even detecting small changes can be difficult. We'll show you exactly why temperature plays such a key role in measuring technology.

Temperature – the invisible factor

There are different factors that affect the precision of your measurement results. These include the strategy, the operator, the measuring system as well as the measuring environment and the workpiece. Humidity, vibrations and the ambient temperature are all important factors in the measuring environment, while the material, the surface and the temperature of the workpiece also play a crucial role.

The effect of the ambient temperature

Exact measurements require a precise measuring system, but coordinate measuring machines (CMMs) only achieve maximum precision if the temperature, temperature gradients and humidity are within the set limit values. Thus measuring system manufacturers have stringent requirements for the measuring environment and generally stipulate an ambient temperature in the measuring lab of 20°C.

All-round monitoring of the measuring environment

TEMPAR® from ZEISS

In the measuring lab, the temperature, temperature gradients and humidity must remain within set limit values. ZEISS TEMPAR automatically captures and records all ambient values necessary for precision. We recently launched TEMPAR wireless as well. It features the same functionalities as TEMPAR, but the sensors are connected wirelessly, eliminating the need for cables. Since the sensors are solar powered, not even power cords are necessary. This makes it easy for you to install TEMPAR and use it with your particular setup.

The impact of the workpiece temperature

DIN EN ISO 1 stipulates a reference temperature of 20°C for workpieces as well. Even small deviations can have major consequences: depending on the material, an increase in temperature can cause workpieces to expand. Given these changes generally occur in the micrometer range, they aren't visible to the naked eye. Yet just like in our graphic, whether or not your component is 0.131 mm bigger or smaller, it makes a big difference in the world of measuring technology.

Expertise on temperature influences
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The most important thing is to observe temperature limits – that's what many users think, anyway. But to avoid incorrect measurement results, a bit more care is required. Download the white paper and learn why the effects of temperature fluctuations are often underestimated and what you can do to prevent measurement errors.