Preventing 3 Errors in Signal Conditioning to Reach Accurate Test Results

The more precisely measurands can be acquired, the fewer rejects are generated, which leads to more economical processes. High-precision sensors and amplifiers are important because of this, especially in industrial production and test benches, where they represent an opportunity to achieve significant gains in productivity with modest investments. In this article, we show you which factors can negatively affect the accuracy of industrial amplifiers, what impact this has on your measurement results, and how you can avoid these errors.

It should be clear to all machine operators that the entire measurement chain is only as precise as its weakest link. Often, however, high-quality sensors (for example with an accuracy class of 0.02) are used with less precise amplifiers (for example with an accuracy class of 0.1). The resulting overall accuracy will then be greater than 0.1.

What affects the measurement accuracy of industrial amplifiers?

ClipX from HBM has an accuracy class of 0.01 and an integrated calibration certificate. Together with modern sensors (such as HBM’s S9), an optimum measurement chain is formed, since the accuracy of the sensors can be fully used, and at very economical costs!

But how is this high accuracy achieved and what factors affect it? High accuracy can only be achieved if the latest electronic components such as analog-to-digital converters are used and all the individual rated outputs of the amplifier are finely adjusted to each other. Less is more in this case: The number of analog electronic components is reduced and consistently digitized.

The following error groups are distinguished for amplifiers used to measure electrical signals based on physical quantities such as force, pressure, torque, temperature, voltage and current [...]

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