The two measurement units are not comparable so any attempt to convert from one to the other is fundamentally flawed.
500 mm water column is equivalent to approximately 0.05 bar pressure.
10.20 meters in depth
1000 m. of pure water = 100 bar plus atmospheric pressure at say 1 bar = 101 bar. Seawater will be more because the density is higher.
In water, every 10 meters you go down, the pressure increases by 1 bar, approximately. To this you must add the air pressure, which is also approximately 1 bar (depending on whether you want gauge pressure or absolute pressure).
Water pressure increases by approximately 1 bar for every 10 meters of depth in freshwater. At a depth of 10 meters, the water pressure would be about 1 bar, in addition to the atmospheric pressure at the surface, which is roughly 1 bar as well. Therefore, the total pressure at 10 meters depth would be about 2 bars.
A depth of approximately 10 meters is required in sea water for 1 bar pressure. This is because each meter of water depth exerts a pressure of approximately 0.1 bar due to the weight of the water above it.
The recommended water pressure is 0.5 to 1 bar
A depth of about 33 feet (10 meters) in sea water is required for the pressure to reach 1 bar. This is because each meter of water exerts a pressure of approximately 0.1 bar.
None! A tank at atmospheric pressure already has an absolute pressure of 1.013 bar.
Pressure at a given depth of water can be calculated using a formula like, "#1 #1kgf/cm2." Therefore, water pressure at 2000 meters below sea level will be around 1.2 bar.
P = ( h ) ( d ) ( g )P = ( 5 m ) ( 1000 kg/m^3 ) ( 9.807 m/s^2 ) = 49035 N/m^2 = 49035 PaP = ( 49035 Pa ) ( 1.01325 bar / 101325 Pa )P = 0.4904 bar
1 meter of water exerts a pressure of approximately 0.1 atmospheres or 10 kilopascals.