The value of hydrostatic pressure for a fixed height column of fluid is directly proportional to the gravitational strength at a particular geographical location.
Generally if the height above sea level is increased the hydrostatic pressure will decrease. Also since the world is wider at the equator than the poles the gravitational pull will increase as you move closer to either the north or south pole.
For example, the acceleration due to gravity in Bangkok, Thailand is 9.783 m/s², whereas in London, England it is 9.812m/s². This represents a difference of approx 0.3%, therefore a column of water that has a hydrostatic pressure of 1000 mmWG in Bangkok will measure 1003 mmH20 in London, England even though the water level has not changed between the two locations.
In order to standardise the measurement of hydrostatic pressure the universal value for Earth’s gravity of 9.80665 m/s² is used.
This local gravity calculator will provide you with a good approximation of the local gravity at your location.
Featured hydrostatic pressure measurement products
DPT200 Pressurised Tank Level Differential Pressure Transmitter - Pressurised tank liquid level differential pressure cell transmitter for process plant storage.
3m range 4-20mA output submersible hot water tank level sensor - This submersible level sensor is suitable for use in hot water tanks. It features a 4-20mA output, 0-3m measurement range, and high-temperature resistance up to 125°C (257°F).
Related Help Guides
- Difference between vented and non-vented water level measurement
- Measuring liquid level in a sealed tank with a hydrostatic pressure sensor
- Determining water tank volume using hydrostatic pressure
- Measuring the volume of liquid in a horizontal cylinder tank
- How do you measure the volume of a liquid using pressure
- Measuring liquid level in a tank using a dp sensor
Related Technical Terms
- cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
- ftH2O – Feet of Water Column at 4 deg C Pressure Unit
- Hydrostatic Pressure
- mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
- mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
- Specific Gravity
Related Online Tools
- Liquid Level to Hydrostatic Pressure Calculator
- Fluid Depth, Density, Gravity, and Pressure Calculator
- Pressure to Liquid Level Calculator
