In my pressure vessel, I filled half with DI water. Then reset my pressure sensor to 0 at room temperature. After, I heated the vessel to increase the temperature. It increased the pressure in the pressure sensor by increasing the temperature. When the temperature was around 100 °C, the pressure was 1 bar.
My first confusion is how I should report the gauge pressure (0 bar at RT and 1 bar at 100 °C) to my report.
Please, I will highly appreciate your advice or suggestions.
Thanks.
If you're reporting gauge pressure you should include the barometric pressure at the location and time of the experiment. You can acquire an instrument or get the value from a local weather station. If you use information from a weather station, be aware that they often report STP and SLP (i.e., actual station pressure and "corrected" to sea level). Don't use the "corrected to sea level" value (SLP).
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