What is the smoke point of kerosene and jet fuel？

Kerosene and jet fuel are common liquid fuels; kerosene is often used in lamps, while jet fuel is for aircraft turbines. Both have the characteristic of burning with a smokeless flame under specific conditions, and the smoke point is a key indicator reflecting this characteristic. The smoke point, also known as the height of smokeless flame, refers to the maximum height of a smokeless flame when the sample is burned in a standard lamp under specified conditions, expressed in millimeters (mm).

Smoke point measurement principle: When the sample oil is burned in a standard lamp, the change of flame height is reflected on the millimeter scale background. During measurement, the wick is raised to the point where smoke appears, then lowered to the point where the smoke tail just disappears— the flame height at this moment is the smoke point of the sample.

The determination of kerosene and jet fuel smoke points complies with standards such as GB/T382 "kerosene smoke point determination method" and ASTM D1322 "Standard Test Method for Kerosene and Aircraft Turbine Fuel Smoke Point". The SD382 Oil product smoke point tester is designed and manufactured according to these standards, with a scale measuring range of 0-50mm and a scale division of 1mm, ensuring accurate reading of smoke point data.

The SD382 Oil product smoke point tester has multiple functional and structural advantages to support smoke point measurement:

- It adopts a millimeter scale background for clear data reading.
- The overall instrument has a compact and complete structure.
- It uses a plug-in structure, making wick replacement more convenient.
- A special glass observation window is equipped for easy operation.
- It is easy to operate and has high repeatability.

In terms of technical parameters, the tester also meets strict requirements:

- The ruler is marked with white on black glass, with a 2mm white or black stripe in the center dividing it vertically into two halves, numbered every 10mm and marked with longer lines every 5mm.
- The top of the wick guide is precisely at the same level as the zero point on the ruler.
- The total travel distance of the lifting seat is not less than 10mm, and it moves smoothly and evenly.
- The key dimensions of the oil container (including the fuel reservoir body, wick pipe, and air duct) comply with GB/T382, such as the fuel reservoir body with a diameter of 21.25±0.05mm and a length of 109.0±0.05mm.

The smoke point is an important indicator for evaluating kerosene and jet fuel performance; a reasonable smoke point ensures the fuel burns fully without excessive smoke, which is of great significance for the normal use of lamps and the efficient operation of aircraft turbines. The SD382 Oil product smoke point tester, with its standardized design and precise structure, provides a reliable tool for accurate smoke point measurement.