How to treat the surplus of natural gas meter

An intelligent gas meter with valve state is provided with a liquid crystal display screen, which can display the valve state of the gas meter. 2 information such as residual gas volume and total gas purchase, etc. The residual gas volume in the table is often displayed on the LCD screen. The remaining two words of a three-unit cube will be marked in front. The unit is a cube and there is not much gas left. Four reminder functions will have a prompt tone or LCD screen to remind you. You need to charge your gas in advance according to the situation. Five, check the situation outside the gas meter, can only see a small glass window. There is a drum with numbers on it. There are also seven figures on the drum, the first four decimal places are black and the last three are red.