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Pound force per square inch to Inches of Water (Swap Units)
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Inches of Water to Pound force per square inch formula
in H20 * 0.036127
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Inches of Water to Pound force per square inch table
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By Chris Deziel
Pressure is simply the total force exerted on a given area. In the SI measurement system, its units are pascals (Pa), and in the imperial system, the units are pounds per square inch (psi). 1 Pa = 1.45 × 10-4 psi. When measuring pressure on the surface of the Earth, it's usually important to take the pressure of the atmosphere into account, so scientists have a unit that does just that. The unit is PSIG, which is known as the gauge pressure. Scientists also have a unit that measures pressure relative to a vacuum. This is absolute pressure, or PSIA. The absolute pressure of the atmosphere at sea level is about 14.7 PSIA where the gauge pressure is defined to be 0. Consequently, you convert back and forth between these quantities by adding or subtracting 14.7.
![]() TL;DR (Too Long; Didn't Read)
The units for gauge pressure are PSIG, and those for absolute pressure are PSIA. You convert between them by adding or subtracting 14.7 psi, which is atmospheric pressure.
Gauge and Absolute Pressure
The standard way to measure atmospheric pressure is to fill a tray with mercury, then invert a graduated tube closed at one end and filled with mercury into the tray. You might have to place a metal plate over the tube opening until it is completely submerged to prevent any of the mercury from falling out. The level of the mercury will fall to a certain level in the tube, but not all the way, because the atmosphere is pressing on the mercury in the tray. The level of mercury in the tube is therefore a measure of atmospheric pressure. At sea level, the height of the mercury is 760 millimeters, which corresponds to 14.7 psi, because 1 mm Hg = 0.01934 psi.
Everything on the surface of the Earth is subject to atmospheric pressure, so any pressure reading you take must account for it. To avoid having to include it in every calculation, scientists define gauge pressure, which, by definition, is equal to 0 psi at sea level. This definition makes clear the relationship between absolute and gauge pressure. Gauge pressure is the recorded pressure minus atmospheric pressure. This is why
and
Which Units Should I Use?
The readings you take on a pressure gauge are always measured in PSIG. That's because, when the gauge is zeroed, it's still measuring atmospheric pressure. If you want to get the absolute pressure inside an evacuated tube, for example, you have to add 14.7 psi to the gauge reading. You might want to do this if you're trying to simulate conditions in space. For most terrestrial readings, however, PSIG is essentially equivalent to PSI, because everything on earth is subject to the same atmospheric pressure.
Gauge Pressure Is Dependent on Altitude
If you center a pressure gauge at sea level and take it to the top of a 10,000-foot mountain, the gauge will show a negative reading. That's because atmospheric pressure decreases with altitude. The difference may be too small to be noticeable in something like a tire pressure gauge, but if you're conducting sensitive pressure studies in a laboratory setting, you should center your pressure gauge at the same altitude as the one in which you are taking pressure readings.
Convert 14.7 psia to kilopascal?![]() 20 In Hg To PsiHow is psig changed to psia?
add atmosperic pressure to gage pressure to convert to psia one atm standard = 14.7 psi
How do you Convert inches of mercury to psia?What is the difference between PSIA and PSI?
PSIA is Atmospheric pressure determined by what sea level you're at it will differ its weird how it works 30 PSIA is like 15 PSI, that's not exact so don't go by cutting the numbers in half I'll get back to you on the specifics PSI is read just like a tire
Does psia equal psi?
Maybe and maybe not. PSIA makes it explicit that the measurement given is an 'absolute' value; that is, its zero point is a complete vacuum. PSI may be absolute, or it may be given relative to ambient atmospheric pressure.
How do you convert 15 psia to psig?Why 0 psia is to measured?
PSIA is Pounds per Square Inch Absolute, as opposed to PSIG which is PSI Gauge. PSIA is absolute pressure. For example, normal atmospheric pressure is about 14.7 PSIA, so a PSIA device connected to atmosphere would read 14.7. PSIG is relative pressure, so if system pressure is 15.7 PSIA, and atmospheric pressure is 14.7 PSIA, then PSIG would be 1.0
What is the difference between psia and psig readings?
psia is absolute pressure which is atmospheric pressure relative to a vacuum of zero pressure and equals 14.7 psi psig is Gage pressure which is pressure relative to absolute pressure and equals the amount above 14.7 psi
How do you convert psig tp psia?How do you convert 1 ATM to psi?What is the Temp of 30 psi steam?
30 PSIG is about equal to 45 PSIA. Saturation temperature from the steam tables at 45 PSIA is about 274°F. So the steam would be 274°F, or hotter if superheated.
Formula to convert psi to Mpa?
Multiply psi by 0.006894759086775369 to convert from psi to MPa. ex: 1000 psi = 1000 x 0.006894759086775369 = 6.89 MPa http://www.chapelsteel.com/psi-mpai.html
How do you convert psi to kilogram cm2?To convert 145 gpm at 20 ft head to psi?
20 ft of head can be easily converted to psi by using the specific weight of water: 62.4 lb/ft3 and converting the units to inches. 20ft * 62.4lb/ft3 / 144in2/ft2 = 8.67 psi
How do i convert 70 psig to kilopascal?
Convert 70 psig to kPa (kilopascal) 1 psia = 6.89 kPa 70 psig + 15 = 85 psia 85 X 6.89 = 583.6 85 X 6.89= 585.65 is the correct math
How do you measure psi with inches of Mercury?
Multiply by 2.03625437 to convert from psi to inches mercury. Multiply by 0.49109777 to convert from inches mercury to psi.
How do you convert psi to pa?How do you convert gph to psi?Psi convert to bar?Convert psi to ksi?How do you convert KPa to psi?How do you convert Pascal to PSI?Convert psi to pa?How do you convert psi to psf?What is PSIA?
psia IS the abbreviation. It stands for Pounds per Square Inch Absolute. When determining a pressure, you are typically measuring it with something that is subjected to atmospheric pressure (1atm~14psia) just like you and I. So say you inflate your tires to 35 psi and check it with a tire gauge. That reading is the GAUGE pressure, or psig. Typically, gauge pressures will not use the G at the end because people tend to be… Read More
Psia To Inches Of Mercury ConversionHow do you convert psi to mmhg?
One pound per square inch is equal to 54.7149 mmHg. So to convert from psi to mmHg, multiply the number of psi by 54.7149.
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What is the water pressure at 5000 feet deep in the gulf?
Average density of seawater is 1.025, so pressure gradient is approximately 0.444 psi/ft as sea level. At bottom, the pressure is approximately 2235 psia or slightly higher, perhaps 2300 psia.
What is the formula to convert bars to psi?Convert 752 torr to psi?How do you convert PSI to ATM?95 psi convert this it to bar?How do you you convert ATM pressure to psi?How do you calibrate PSIA transmitter. use 14.7 and the range is ATM to 600 PSIA. What would the 4-20mA set points be.?
The difference between Absolute Presure and Gauge Pressure is 14.7psi. So zero gauge pressure (0psig) = 14.7 psia. 600 psig = 614.7 psia. Calibrate the tranmitter so 4mA is obtained at 14.7 psig and 20mA is obtained at 614.7psig. The span will be 600 psi in both cases.
How do you convert 1 SCFH to PSI or vise versa PSI to SCFH?How can you convert 20 tons per square inch into mega pascal?
1000 pounds per square inch (ksi) = 6894.76 kPa, so 1 ton (2000 pounds) per square inch = 13789.52 kPa, and 20 tons per square inch = 275790.4 kPa = 275.7904 MPa [megaPascal]. I used ConvertWorld to help with the conversions. See related link. 20 tons per square inch = 275.790 megapascals 20 tons/in2 = 40000 pounds/in2 (psi) Multiply psi by 0.006894759087 to convert from psi to MPa 40000 psi * 0.006894759087 MPa/psi = 275.790… Read More
How many bars in 20 psi?How do you convert psi to lbs?
Multiply the psi by the surface area in square inches
How do you convert inches of Mercury to psi?How do you convert psi to inches of Mercury?How do you convert .50mpa to psi?What does PSIG indicate?
psig means pounds per square inch (gauge). The psi is the non-SI unit of pressure in imperial/US customary measurement systems. Gauge pressure is relative to the ambient atmospheric pressure. A reading of 1 psig means 1 psi above atmospheric pressure. This is the most common measurement you would obtain from a pressure gauge that measures in psi. The other is psia, which is an absolute pressure relative to a perfect vacuum, and is thus equal… Read More
Is 0 mm hg equal to 0 psia and is 760 mm hg equal to 0psig?How many psi equal to 20 bar?Convert psi to pounds per gallon?Convert 59.8 inches of mercury to psi?How do you convert 1.5 bar to psi?
bar x 14.503773773 = psi 1.5 bar x 14.503773773 = 21.76 psi (rounded)
How do you convert 220 kpa to psi?
(1 kPa = 0.145038 psi). So, 220 kPa x 0.145038 = 31.9083 psi
How do you convert psf to psi?How do you convert psi to kg cm²?How do you convert psi water pressure to gallons per minute?
First you need the size of the pipe and the volume of water supply. Pressure will vary during usage. Standard well system operates between 20-40 psi and city systems operate from 50-70 psi.
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