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What are the typical Pressure Units used in leak and flow testing?

April 26, 2017flow leak pressure Testing units Used

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What are the typical Pressure Units used in leak and flow testing?

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Gauge Pressure: pressure relative to atmospheric condition (psig, Kpa-gauge). Gage pressure units should be marked as psig or Kpa-gage. Many analog gages are not marked that way. Note: If you show “0” pressure on your supply pressure gage, the measurement units are gage pressure. Absolute Pressure: pressure relative to 0 pressure or absolute vacuum (psia, Kpa-abs). The relation between the two pressure measurement units. Absolute Pressure = Gage pressure + Your Barometric Pressure (Standard Barometric Pressure is 14.695 psia). Gage Pressure = Absolute Pressure – Your Barometric Pressure (Standard Barometric Pressure is 14.695 psia).