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Thick-film ceramic measuring cell

Principle of thick-film ceramic measuring cell

Unlike the thin-film strain gauge method, the Wheatstone bridge is bonded directly to a ceramic diaphragm in this case. Flexure of the diaphragm as the result of the external pressure causes a change in the resistances of this Wheatstone bridge, which is converted to a pressure-proportional signal.
Using ceramics achieves a higher chemical resistance to aggressive media. The measuring range is higher than with the thin-film strain gauge method; measuring accuracy is not as high, however.