The flash and fire points of a lubricating oil can be determined using the Abel-Pensky method, which is one of the standardized test procedures for oils with a lower flash point:
- Apparatus: Use a Pensky-Martens apparatus, which includes a heated brass cup, thermometer, and test flame.
- Heating: Slowly heat the oil sample in the apparatus cup.
- Testing: Apply the test flame at regular intervals to identify the flash and fire points.
- Recording: Record the results of the tests.
The flash point is the lowest temperature at which the oil's vapors ignite briefly when exposed to a flame. The fire point is the temperature at which the oil continues burning for at least 5 seconds after ignition.
The flash point is an important constant for lubricants because it contributes to the scope of application of a lubricant. For example, an oil with a flash point of 150°C cannot be used in a system where peak temperatures are over 150°C. Flash and Fire Point of Lubricant Experiment | PDF - ScribdThe
Pensky Marten's apparatus determines the flash and fire points of oils
using both open cup and CLOSED CUP
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