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English Translations » 【仪表自控交流圈】 » Questions regarding vacuum gauges and vacuum zero point

Questions regarding vacuum gauges and vacuum zero point

2021-09-07View Original

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Dear sea friends, does the vacuum level of 5E-5pa mean -0.00005pa? If so, may I ask where does the zero point for -0.00005 originate from? Atmospheric pressure? Absolute zero pressure? Is there any precise instrument that can be used for measurement?
Reply #22021-09-07
It is of course one atmosphere; in reality, there is no absolute zero pressure – at most, it can only approach it infinitely
Reply #32021-09-07
Is 101.3 kPa atmospheric pressure the zero point?
Reply #42021-09-07
Which section was this sent to?

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Translated at 2026-07-23 18:52:33

Original: https://bbs.hcbbs.com/thread-3252566-1-1.html

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