To atmospheric pressure as the starting point of the pressure. Absolute pressure greater than atmospheric pressure, relative pressure is positive, otherwise is negative. Negative relative pressure, also known as negative pressure, the absolute value of said vacuum pressure. Can gauge the relative pressure measured.
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No. 2
Define the pressure difference on both sides of the interface relative to the interface pressure. Extended meaning to atmospheric pressure as the starting point of the pressure. Absolute pressure greater than atmospheric pressure, relative pressure is positive, otherwise it is negative. Negative relative pressure, also known as negative pressure, the absolute value of said vacuum pressure. Relative pressure can be measured by pressure gauge. Classification relative pressure: atmospheric pressure at current local reference point for the calculation of the pressure, also known as pressure meter display. Among them, the relative pressure and absolute pressure at the relative size of the local atmospheric pressure, can be divided into two types: (1) Table pressure: Absolute pressure of the fluid being tested at the local atmospheric pressure is higher than the part that Table pressure = absolute pressure - atmospheric pressure at the local (2) Vacuum pressure: the absolute pressure of the fluid being tested below the prevailing part of the local atmospheric pressure, also known as the vacuum value, ie Vacuum pressure = atmospheric pressure at the local - absolute pressure Further rectifiable vacuum, vacuum is the vacuum value and the percentage of time the ratio of the local atmospheric pressure, ie Vacuum = vacuum value of / at the local atmospheric pressure
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Definition
Pressure difference on both sides of the interface relative to the interface pressure.
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Extended meaning
To atmospheric pressure as the starting point of the pressure. Absolute pressure greater than atmospheric pressure, relative pressure is positive, otherwise it is negative. Negative relative pressure, also known as negative pressure, the absolute value of said vacuum pressure. Relative pressure can be measured by pressure gauge.
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Classification
Relative pressure: atmospheric pressure at current local reference point for the calculation of the pressure, also known as the meter shows the pressure. Among them, the relative pressure and absolute pressure at the relative size of the local atmospheric pressure, can be divided into two types: (1) Table pressure: Absolute pressure of the fluid being tested at the local atmospheric pressure is higher than the part that Table pressure = absolute pressure - atmospheric pressure at the local (2) Vacuum pressure: the absolute pressure of the fluid being tested below the prevailing part of the local atmospheric pressure, also known as the vacuum value, ie Vacuum pressure = atmospheric pressure at the local - absolute pressure Further rectifiable vacuum, vacuum is the vacuum value and the percentage of time the ratio of the local atmospheric pressure, ie Vacuum = vacuum value of / at the local atmospheric pressure