Open flash point automatic tester, when the use environment of the test sample is an open environment (such as lubricating oil), determine the open flash point value of petroleum products. Use touch screen instead of keyboard operation. Adopt foreign advanced technology, large LCD screen LCD full Chinese display man-machine dialogue interface, full screen touch button prompt input, convenient and quick, open and fuzzy control integrated software, modular structure, in line with national standards, the United States, and the European Union And other standards. It is an ideal substitute for imported instruments. It is widely used in railway, aviation, electric power, petroleum industry and scientific research departments, etc.