How to convert the standard flow rate and working flow rate of gas? Is the flow rate measured by the flowmeter under standard condition or working condition?

How to convert the standard flow rate and working flow rate of gas? Is the flow rate measured by the flowmeter under standard condition or working condition?

In China, the standard state of gas is 20 ℃, 101.325 kPa (for gas, the standard state is 0 ℃, 101.325 kPa). The flow rate of fluid in the standard state is defined as the standard flow rate
In addition, the flow under pressure and temperature can be considered as the working flow
The conversion formula between the two is shown in the figure below
The flow measured by general flowmeters, such as orifice plate, vortex street, metal tube float, waist wheel, etc., is the flow under working condition, and the standard flow can be converted only by matching temperature sensor, pressure transmitter and flow totalizer;
However, the latest SHQL series of thermal gas mass flowmeter can measure the standard flow without temperature and pressure compensation, which greatly reduces the cost of installation and maintenance

Conversion relationship between flow rate and velocity

Flow can be divided into three forms by flow formula or measurement unit: volume flow: flow expressed by volume / time or volume / time. For example: M & # 179 / h, L / h volume flow (q) = average flow rate (V) × pipe cross-sectional area (a) mass flow: flow expressed by mass / time

How to convert K, KB and M?

K and KB are the same
1M=1024K.
If the domestic bandwidth is 2m, it should be calculated as follows:
2 * 1024 / 8 = 256K, which means that the theoretical maximum download speed of 2m bandwidth is 256K