What is the function of a volume corrector? The image shows a volume corrector on a gas pipeline; what kind of fuel is used at the filling port, and what is its function...

A volume corrector is likely an instrument used to calculate the density of natural gas at standard conditions online; I guess it has a function similar to that of a flow-volume meter. Are there any objections? Some have been invited to play a game against my brother. {:2_36:} .

As can be seen from the diagram, it is a gas turbine flow meter produced by Zhejiang Tianxin Company, which is used for natural gas measurement. The flow meter itself can only measure the volume flow rate under the current operating conditions; temperature and pressure compensation must be carried out using a volume corrector in order to convert this value into a flow rate under standard conditions. It also has the function of calculating cumulative flow rates. This volume corrector provides more accurate calculations than ordinary flow integrators. In addition to compensating for the effects of temperature and pressure, it also takes into account the influence of gas composition and the corresponding compressibility factor. A flow coefficient is calibrated using standard devices to ensure accurate measurement. Additionally, the filling port is used to add lubricating oil for lubricating the bearings of the gas turbine flowmeter. The method is to first fill the lubricating oil into the transparent oil cup, and then use a hand-cranked pump to inject the oil into the bearings of the flow meter for lubrication. (Apart from the initial amount of oil added, it is necessary to add an appropriate amount of oil regularly thereafter; only a hand-cranked pump is used for refilling the oil, and the oil cup is replenished when it runs low.)

Okay, I understand. Thank you! ! !