A.
Install A fitting adapter at the nozzle of the fuel gun
B.
Use adaptor (seal assembly) to seal the oil suction hole before and after
C.
The adapter is connected to the gas-liquid ratio tester through a hose
D.
The recovered airflow is first measured through the gas-liquid ratio tester, and then enters the oil-gas collection hole on the barrel of the refueling gun
E.
Calculate the ratio of extracted air volume to refueling volume
F.
Test results shall conform to the ratio range of 1 to 1.2