Why is signal conditioning necessary

Signal conditioning and calibration

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2018 | OriginalPaper | Book chapter

Sensors convert the physical quantity to be measured into an electrical signal. There are three points to consider: 1. The sensor signal is usually very small. It must therefore be amplified to a standard level so that it can be processed by a controller. 2. Influences of disturbance variables must be taken into account (e.g. influence of temperature on the characteristic curve of a humidity sensor). 3. Characteristic curves have to be filtered and filtered very often can be linearized. Temperature measurement has a special position here. There are measuring elements with an undisturbed and linear character (e.g. PT100 and thermocouple). These elements can often be connected directly to special inputs on controllers. In this sense, they form their own signal standard.

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About this chapter
title
Signal conditioning and calibration
DOI
https://doi.org/10.1007/978-3-658-12562-2_15
Authors:
Prof. Dr. Ekbert Hering
Dr. Gert Schönfelder