ダイバーズウオッチに係る諸問題

概要

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Diving technique is entering into the next new stage, and is being developed with the aims of "more deeply, safely and efficiently with higher technique". To accomplish these aims, consideratioh for diver's outfit under the hypressure helium environment and diver's environment is required. JAMSTEC has studied diver's watch as a part of diver's outfit, and has found some problems about diver's watch as follows. (l) Wet suit is shrunk by the pressure under the water and it makes some space between a band and a wet suit and the band becomes loose. According to our experiment it becomes more than 20mm so that the band of diver's watch should be flexible to cover this looseness. (2) Crown operation under the pressure is necessary thing for saturetion diving but it becomes almost impossible at the depth of between 30m and 300m, therefore using QUARTZ OSCILLATOR which makes less error is better for saturation diving. (3) As helium gas gets into a diver's watch and internal pressure becomes more than 12 Kg/cm2 in some cases when it is saturation diving, the pressure test of internal part is very important. In addition to that, as the extarnal pressure at decompression time, it is necessary to have anti internal pressure capability.
社団法人日本時計学会の論文
1982-06-25