| 摘要 |
PCT No. PCT/EP95/03553 Sec. 371 Date Jun. 10, 1997 Sec. 102(e) Date Jun. 10, 1997 PCT Filed Sep. 9, 1995 PCT Pub. No. WO96/19720 PCT Pub. Date Jun. 27, 1996A penning type gauge head with an electrode system comprising an anode and a cathode disposed in the magnetic field of a permanent magnet, including an ignition aid for the electrode system. In order to provide rapid and reliable ignition, the ignition aid consists of a least one metal strip attached on the anode, and the free end of the ignition aid extends in the direction toward the cathode.
|
