![]() ![]() You can find metric conversion tables for SI units, as wellĪs English units, currency, and other data. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.Ĭonversion calculator for all types of measurement units. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. By contrast, psia measures pressure relative to a vacuum (such as that in space). Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. ![]() head in feet of water (ft h2o).You can do the reverse unit conversion fromįoot of head to psig, or enter any two units below: Enter two units to convert From: Head Pressure in pounds per square inch (psi) vs. Pumps and Fans - Energy Equation and Head Rise The energy equation can be used to calculate the head rise in pumps and fans.Pumping Water - Required Horsepower Horsepower required to pump water.head units - like lb/in 2, atm, inches mercury, bars, Pa and more. Pressure Units - Online Converter Convert between pressure units like Pa, bar, atmosphere, pound square feet, psi and more.Pipe and Duct Systems - Total Head Loss Major and minor loss in pipes, tubes and duct systems.Centrifugal Pumps - Stable and Unstable Flow The characteristics of stable and unstable flow.Centrifugal Pumps - Capacity Modulation Modulating pumps to adapt capacities to variable process demands.Centrifugal Pumps An introduction to Centrifugal Pumps.Pumps Piping systems and pumps - centrifugal pumps, displacement pumps - cavitation, viscosity, head and pressure, power consumption and more.It can be simpler to discuss the performance pumps in terms of head rather than pressure since the use of head makes the pump curve applicable to any liquid regardless of density. Identical pumps will develop the same head when running at the same speed but the discharge pressure is quite different due to the different densities of the liquids. Pressure when handling Liquids of different Density Liquid Feet of Head Water to psi Headĭownload pressure vs head imperial units as pdf fileĭownload water pressure vs head - SI units as pdf file Head vs. The head in feet water column can be calculated from pressure 100 psi with eq. = 52 psi Example - Converting Pressure - psi - to Pump Head - feet The pressure - psi - of a water pump operating with head 120 ft can be calculated with eq. P = pressure (kg/cm 2) Example - Converting Pump Head - feet - to Pressure - psi ![]() P = pressure (bar) Converting pressure in kg/cm 2to head in metre P = pressure (psi) Converting pressure in bar to head in metre Converting pressure in psi to head in feet Since pressure gauges often are calibrated in pressure - psi or bar - a conversion to the heads commonly used in pump curves - like f eet or meter - may be required. P = pressure ( kg/cm 2 ) Converting Pressure to Head Pumps characteristic curves in metre of head can be converted to pressure - kg/cm 2- by the expression: P = pressure (bar) Converting head in metre to pressure in kg/cm 2 Pumps characteristic curves in metre of head can be converted to pressure - bar - by the expression: SG = specific gravity of the fluid Converting head in metre to pressure in bar Pumps characteristic curves in feet of head can be converted to pressure - psi - by the expression: Converting Head to Pressure Converting head in feet to pressure in psi Pumps characteristic curves are often in head - feet or metres - and a conversion to pressure scales commonly used in pressure gauges - like psi or bar - may be required. ![]()
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