Metallic protective pipe, has soldering ring with inner diameter of specific milli meter and outer diameter of specific value, and cover that is adapted to be connected with counter bore by laser weld

摘要

The pipe (6) has a set of temperature-resistant integrated optical windows for providing immersion protection to fiber-optic probes. A round cover (2) has an axial-symmetrical opening (4) with diameter, where the cover closes an end of the pipe. A flat active soldering ring (5) with thickness of 50 micro meter is applied on a section formed on an axial-symmetrical counter bore (3), where inner diameter of the ring is in specific milli meter and outer diameter of the ring is in a specific value. The cover is adapted to be connected with a counter bore (7) by a laser weld (8).