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    User name jpchen

    Log entry time 00:26:38 on September 29, 2009

    Entry number 292131

    This entry is a followup to: 292083

    keyword=pressure drops due to temperature decreasing

    The hydrogen loop connected to a large tank outside the hall. When temperature changes (day-night), pressure will change accordingly. It is more obvious today due to large temperature change (low~50F, high ~80F). The 24-hour pressure change follows the temperature change well.