There is no “ideal” sensor principle. Of particularly great importance and widespread use are resistive sensor technologies, due to their reliability. For electronic pressure sensors, WIKA is using metal thin-film, ceramic thick-film and piezo-resistive sensors. Each of the three resistive sensor principle has its specific advantages and drawbacks in terms of the possible measuring ranges, the overpressure behaviour or the performance under the influence of temperature changes.
Careful analysis of the requirements of each application is required to exclude unsuitable principles. The wetted materials and their compatibility with certain media also play an important role in selecting the best sensor. In a ceramic sensor, it is, for example, impossible to avoid an additional sealing between the sensor and the housing. This is why this type of sensor, depending on the sealing material used, has only limited suitability for universal use. In WIKA's electronic pressure sensors, the best fitting sensor principles are selected and used exactly tailored to each application. For special applications, our Customer Support offers competent support regarding the selection.