Convert pressure unit Kpa to mmHg
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How is the unit of pressure derived from the unit of …? Besides, does it have to be done on the DCS screen?
Multiplying by a coefficient: 10,000/13.6/98 = 7.503; in other words, 1 KPa = 7.503 mmHg. I’m not sure if this is correct, but it’s provided for reference
This post was last edited by ylb913 on 2016-1-28 06:34. 1kPa=7.051mmHg.
mmHg stands for millimeters of mercury. 1 standard atmosphere equals 760 mm of mercury, which is equivalent to 1.01325×10^5 Pa or 10.336 meters of water column. 1 standard atmosphere = 101325 N/㎡. (In calculations, it is usually 1 standard atmosphere = 1.01×10^5 N/㎡).
1kPa=0.2953inHg
P = pgh, where the density of mercury is 13.6 g/cm3 and the acceleration due to gravity is 9.8 N/kg. The height in mercury columns is given by h = P/g; when P = 1 kPa, h = 1000/(13.6*9.8) = 7.503 mm. In other words, 1 kPa is equivalent to 7.503 mmHg. However, whether this value is accurate depends on the values used for the density of mercury and the acceleration due to gravity. . .