| 摘要 |
The capsule comprises partly a lower formation of a thermo-plastic tube (14) with an elastomer casing (13), e.g. silicon rubber, an upper capsule with a wall of at least two layers (1,2), of which the inner layer (1) comprises thermo-plastic highly resistive material, e.g. polyethylene. The outer layer (2) comprises a low-resistive thermoplastic material e.g. polyethylene with carbon admixture. - Between two gable walls (4) of the upper capsule through a magnetic field monitoring component (3), which has earth potential, extends a tubular component (6), comprising mainly thermoplastic material. The upper capsule comprises a three layer tube, formed with a funnel-shaped part (11), which extends coaxially between the thermo-plastic tube (14), comprising the lower capsule, and an earthed tube (15) extending from the magnetic field monitoring component (3). |
