Smoke Point of Kerosine and Aviation Turbine Fuel

Mã SP: SP10 - Automated Smoke Point ASTM D1322
The smoke point test method is one of the oldest standards in petroleum industry. It is one of the last manual methods that has never been automated before. Performing the smoke point test manually requires highly skilled technicians with years of experience. Additionally, the manual test is time consuming. The current visual rating method used for specification purposes suffers from the drawback of operator subjectivity. The visual measurement of an open flame is a challenging exercise and dangerous for lab personnel. The visual rating of the flame varies from one operator to another. The SP 10 revolutionizes the smoke point testing. It uses a system that adjusts the size of the flame associated to a video camera that observes the flame. When the flame attains the shape described in the test method, the SP 10 memorizes and reports the height of the flame. Every test isfully documented andtraceable which is important for aviation industry quality procedures. The SP10 has been made the referee method in D1322: §6.2.2 of ASTM D1322: “Due to the vastly superior resolution of the digital camera compared to the human eye, smoke point shall be measured by the automated unit when available. In case of dispute between results from manual and automated methods, the referee shall be considered the automated method.”

ASTM and IPreferee method

Quick, easy, and precise
Increases safety
Reduces labor
Very compact design

 

Significance and Use
This test method provides an indication of the relative smoke producing properties of kerosene and aviation turbine fuels in a diffusion flame. The smoke point is related to the hydrocarbon type composition of such fuels. Generally the more aromatic the fuel the smokier the flame. A high smoke point indicates a fuel of low smoke producing tendency.
The smoke point is quantitatively related to the potential radiant heat transfer from the combustion products of the fuel. Because radiant heat transfer
exerts a strong influence on the metal temperature of combustor liners and other hot section parts of gas turbines, the smoke point provides a basis for correlation of fuel characteristics with the life of these components.

 

Principle
The SP 10 uses a patented system (License TOTAL RM) based on a video camera that observes the flame and an actuator that adjusts the size of the flame. The flame image is digitalized and the dedicated software determines the height of the flame when its shape corresponds to the one described in the test method. This specific flame is the one with the maximum height without smoke generation.

 

Operation
The smoke point test with the SP 10 is as simple as is a flash point test with an automated instrument. The operator prepares the candle according to the test method instructions (phase 1).
The candle is then positioned on a conveyor (phase 2).
The operator keys in all sample details and then initiate the test (phase 3).
Then all the procedure is automated. The candle is automatically lit, the five minutes stabilization time is followed by the three determinations of the flame height. At the end of test, the SP 10 instrument calculates the mean value of the three flame heights measured and reports the result.
The result is saved in a built‐in data base. It can be printed, transferred on a USB memory stick and/or send to a LIMS when the SP 10 is connected to a LAN

Benefits
The SP 10 is an automated instrument that strictly followsthe test method with an improved precision. It eliminates the subjectivity inherent to the manual test where the visual rating of the flame varies from one operator to another. Thanks to the digital imaging technology of SP10, the shape of the flame described in the test method is automatically repeatedly determined andcorresponding flame height is precisely recorded in
the same conditions.
In addition, the SP 10 eliminates all safety risks linked to the visual observation of an open flame. The test is carried unattended which drastically reduces labor. Every test is fully documented and traceable which is important for aviation industry quality procedures.

 

Ordering information                             Description

AA220-001 SP 10 – Automated Smoke Point Apparatus
Delivered ready for operation

Reported results                          Measurement limits

Height of the flame in mm According to the test method, 0 up to 50.0 mm

 

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