| 摘要 |
<p>A voltage is applied between electrically isolated components to provide an electric field within a cavity of the mold (24) of a molding machine. The resulting capacitance is measured for a time while material is introduced into the mold cavity (34). As material is introduced, the effective dielectric constant of the cavity changes such that the measured capacitance changes. If the changing capacitance falls outside pre-defined bounds, a fault condition is determined.</p> |
