| 摘要 |
A pressure transfer device comprises a pressure transfer device body and an isolating diaphragm, wherein, between the surface of the body of the pressure transmitting device and the isolating diaphragm, a pressure chamber is formed, whose volume is dependent on the position of the isolating diaphragm. The isolating diaphragm has a material thickness and a deflectable working region with an area A, wherein the isolating diaphragm has a reference position, in which the pressure chamber contains a reference volume Vref, and the isolating diaphragm is deflectable from the reference position at least so far in two directions, that the volume of the pressure chamber varies between values of up to Vref+/−&Dgr;Vdesired, wherein associated with a volume change &Dgr;V is a dimensionless deflection measure w, with w(&Dgr;V):=(3·&Dgr;V)/(A·h), wherein &Dgr;Vdesired is dimensioned in such a way, that |w(&Dgr;Vdesired)|≧2.5; wherein, in the case of all w(&Dgr;V), for which |w(&Dgr;V)|≦̸|w′(&Dgr;V)|, wherein |w′(&Dgr;V)|≧0.5·|w(&Dgr;Vdesired)|, the isolating diaphragm has a non-axisymmetric deflection mode, which is superimposed on the axisymmetric deflection of w(&Dgr;V), and wherein the deflection of the non-axisymmetric deflection mode, in the case of |w(&Dgr;V)|=0.4·|w(&Dgr;Vdesired)|, amounts to at least 0.3 times the maximal deflection of the non-axisymmetric deflection mode. |
