The pressure unit “kilogram” and “ bar the definition of “…”
In industry and daily life, we often hear about “kilograms” and… bar “these two units of pressure. Strictly speaking, ‘kilogram’ as a unit of pressure refers to”Kilogram-force per square centimeter (kgf/cm²), whereasbar (Ba)It is a commonly used unit of pressure in the International System of Units.
How many bars are 7 kilograms?
According to the standard conversion formula in physics:
- 1 kilogram-force per square centimeter ≈ 0.980665 bar
- 1 bar ≈ 1.0197 kgf/cm²
Therefore, upon precise calculation,7 kilograms-force per square centimeter equals 6.864655 bar.
However, in practical engineering applications and everyday communication, due to the extremely close numerical values of the two, they are often approximated as being interchangeable, that is,1 kilogram of pressure is approximately equal to 1. barTherefore, in engineering colloquialism,7 kilograms of pressure is often directly taken to be 7. bar.
Common pressure unit conversion relationships
In addition to kilograms and bars, pressure measurement also involves other common units. Below are several frequently used conversion references:
- Megapascal (MPa）: 1 MPa = 10 bar ≈ 10.197 kgf/cm²
- Standard atmospheric pressure (atm): 1 atm ≈ 1.01325 bar ≈ 1.033 kgf/cm²
- Kilopascal (kPa）: 1 bar = 100 kPa
7 kilograms (7 bar) Application scenarios of stress
7 kilograms (approximately 7) bar) is a pressure value that is very common in both industrial and civil applications. For example:
- Air compressor: Many conventional industrial air compressors are set to a rated discharge pressure of between 7 and 8 bar for powering pneumatic tools.
- Water pipe pressure testIn home renovations or building water supply and drainage projects, the pressure used for hydrostatic testing of piping systems typically reaches around 7 bar to ensure that the network is leak-free.
- Tire inflation: The tire pressure of some heavy-duty trucks or construction machinery may approach or reach 7. bar.