Lakeside53
Stihl Wrenching
O.K., everyone jump in here...
The world either was already, or went metric (SI). We (except the Military and most scientific work) nudged in that direction then backed out. The USA is the only country (jump on me..) that still uses INCHES and POUNDS.
Bars and Pascals.. simple version
1 BAR is ROUGHLY the ratio of atmospheric pressure at standard sea level. To get more accuracy, atmospheric presure is often quoted in MilliBars (mB). I atmosphere (68 degrees at sea level) is 1013mb, or 1.012 Bar So if you are in the USA and thinking PSI, and someone says .5 bar, you know how to figure it out
14.7 x.5 = nearly 7.5psi. A Pascal 'aint much, so it's normally mulitplied by 1000 and called KiloPascals, or Kpa
From the dictionary (I just couldn't take the credit):
A Bar is a metric unit of atmospheric pressure, equal to one million dynes per square centimeter, 100 kilopascals, 750.062 torr, 1.019 72 kilograms of force per square centimeter (kgf/cm2), or about 14.503 78 pounds per square inch (lbf/in2). The word comes from the Greek baros, "weighty." We see the same root in our word, barometer, for an instrument measuring atmospheric pressure. One bar is just a bit less than the average pressure of the Earth's atmosphere, which is 1.013 25 bar. In practice, meteorologists generally record atmospheric pressure in millibars (mb). In English-speaking countries, barometric pressure is also expressed as the height, in inches, of a column of mercury supported by the pressure of the atmosphere. In this unit, one bar equals 29.53 inches of mercury (in Hg).
A Pascal is the SI unit of pressure. The pascal is the standard pressure unit in the MKS metric system, equal to one newton per square meter or one "kilogram per meter per second per second." Sounds impressive, but in traditional English terms a pascal is only 0.000145 pounds per square inch (0.020885 lbf/ft2 or 0.00750 mmHg). Thus pressure is more commonly measured in kilopascals (kPa), with 1 kPa = 0.145 lbf/in2. Air pressure is also measured in hectopascals (hPa), with 1 hPa = 1 millibar. The unit is named for Blaise Pascal (1623-1662), French philosopher and mathematician, who was the first person to use a barometer to measure differences in altitude
The world either was already, or went metric (SI). We (except the Military and most scientific work) nudged in that direction then backed out. The USA is the only country (jump on me..) that still uses INCHES and POUNDS.
Bars and Pascals.. simple version
1 BAR is ROUGHLY the ratio of atmospheric pressure at standard sea level. To get more accuracy, atmospheric presure is often quoted in MilliBars (mB). I atmosphere (68 degrees at sea level) is 1013mb, or 1.012 Bar So if you are in the USA and thinking PSI, and someone says .5 bar, you know how to figure it out
14.7 x.5 = nearly 7.5psi. A Pascal 'aint much, so it's normally mulitplied by 1000 and called KiloPascals, or KpaFrom the dictionary (I just couldn't take the credit):
A Bar is a metric unit of atmospheric pressure, equal to one million dynes per square centimeter, 100 kilopascals, 750.062 torr, 1.019 72 kilograms of force per square centimeter (kgf/cm2), or about 14.503 78 pounds per square inch (lbf/in2). The word comes from the Greek baros, "weighty." We see the same root in our word, barometer, for an instrument measuring atmospheric pressure. One bar is just a bit less than the average pressure of the Earth's atmosphere, which is 1.013 25 bar. In practice, meteorologists generally record atmospheric pressure in millibars (mb). In English-speaking countries, barometric pressure is also expressed as the height, in inches, of a column of mercury supported by the pressure of the atmosphere. In this unit, one bar equals 29.53 inches of mercury (in Hg).
A Pascal is the SI unit of pressure. The pascal is the standard pressure unit in the MKS metric system, equal to one newton per square meter or one "kilogram per meter per second per second." Sounds impressive, but in traditional English terms a pascal is only 0.000145 pounds per square inch (0.020885 lbf/ft2 or 0.00750 mmHg). Thus pressure is more commonly measured in kilopascals (kPa), with 1 kPa = 0.145 lbf/in2. Air pressure is also measured in hectopascals (hPa), with 1 hPa = 1 millibar. The unit is named for Blaise Pascal (1623-1662), French philosopher and mathematician, who was the first person to use a barometer to measure differences in altitude
