About membrane

Dec 14, 2011 1:09:33 PM

Circular elastic membrane sensor. When both sides of the diaphragm under different pressure (or force) the role, the low pressure side of the diaphragm response to the move to center of pressure difference to produce a certain relationship with the displacement. Diaphragm in the form of mainly flat diaphragm, the diaphragm and the corrugated diaphragm vertical chain three. Whether they can be around the flat diaphragm fixed support, the center hole and the patch area is the force distribution, etc. are divided into different forms, one of the most commonly used by around a fixed circular cross-section consisting of flat sheet membrane slice. Hanging by a chain near the edge of the diaphragm slot of the circular plate structure, the elastic strain occurs mainly at the edge of the annular groove, compressive strain diaphragm used this column to achieve the piezometer tube or purpose. Vertical chain of hard-central part of the diaphragm moves closer to the pressure pan, so for the capacitive sensor or a piezoelectric sensor is better. Corrugated diaphragm with circular concentric ripple voltage. In order to increase the displacement of the diaphragm center can be made ​​of the two diaphragm capsule welded together or further to a number of film series box set of bellows.

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