A leakage-meter of oil system of automobile was developed, which was equipped with PLC control, high accuracy and short scope sensor to measure pressure, and had friendly interface of input/ output and the function to print the data and result in table. 本燃油系统测漏仪采用PLC控制,选用高精度、小量程压力传感器测量压力,良好的输入输出界面和表格打印输出功能。