Automatic flash point tester, used to determine the closed flash point value of petroleum products. Widely used in railway, aviation, electric power, petroleum industry and scientific research department, etc.
The flash point is the low temperature at which a flammable liquid or solid can give off sufficient vapour to form a flammable mixture with air at the surface of the liquid or solid in the container used. The flash point of a flammable liquid varies with its concentration.
As the temperature rises, the vaporized oil and gas on the fuel surface increases. When the mixture of oil and gas and air reaches a certain concentration, when it comes into contact with it with an open flame, a short flash will occur (flicker and extinguish), and the oil temperature at this time is called for the flash point. The lighter the oil, the lower the flash point. The higher the flash point, the safer it is.
The flash point is the lowest temperature at which the test flame causes the vapor of the sample to ignite and spreads the flame to the surface of the liquid under specified test conditions. The ignition point is to continue to heat up and heat on the basis of the flash point, until the sample catches fire and can burn continuously for no less than 5 seconds. This temperature is the ignition point of the sample.
There are two methods for determining the flash point: the open cup method and the closed cup method. The open flash point is always higher than the closed flash point, because the oil vapor generated by the open flash point tester can freely diffuse into the air, and it is relatively difficult to reach the flash point. fire temperature. The flash point measured by the open cup method is 15-25 degree higher than that of the closed cup method.