| 摘要 |
A new design for and an improved process of manufacturing a detecting unit (12) for a type I electrolytic cell (10) with thin film electrodes. In the first step of the process, a long, narrow, transparent, hollow glass tube (98) is provided having an inside surface, an outside surface, and an end with a rim. A thin, noble metal film (120) is deposited on the inside surface of the hollow glass tube. Then, a beam (130) from a light source (140) is directed through the hollow glass tube to remove a first portion of the noble metal film from the inside surface of the hollow glass tube and create a first spacer area (122). The beam also removes a second portion of the noble metal film from the inside surface of the hollow glass tube and creates a second spacer area. Consequently, two, separate electrode wires (46, 48) are created. Finally, an hygroscopic film is deposited on the entire inside surface of the hollow glass tube, covering completely the first and second electrode wires, and the spacer areas.
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