| 摘要 |
An inductive proximity switch has at least two reception coils (E1,E2) consisting of at least one annular or elliptical winding, and the transmitting coil (S) is peripherally surrounded by the first receiving coil (E1) and this on its side is surrounded peripherally by the second receiving coil (E2). The first receiving coil is surrounded by the second receiving coil, so that with parallel vertical projection onto the coils, the coil surfaces of all the other coils are completely overlapped. |
