Device for measuring e.g. density of electrically activated gas in industry, has probe comprising symmetrical element that is active in passage for converting electrical unsymmetrical signals into symmetrical signals

摘要

The device has a probe shaft (5) connected with a signal generator for electrical coupling of a high frequency signal in a probe head (2). The probe head comprises a probe core (8) that is surrounded by a plastic casing (7) or tube. A probe (1) comprises a symmetrical element (9), which is active in transition between the probe head and an electrical unsymmetrical high frequency signal delivery unit (6) i.e. coaxial line, for converting electrical unsymmetrical signals into symmetrical signals. The probe is designed as a multi-layer circuitry based on sintered ceramic carriers.