PILODIST – BOCLE 5001
Test Equipment for Measurement of Lubricity of Aviation Turbine Fuels
by the Ball-on-Cylinder Lubricity Evaluator according to ASTM D-5001.
The BOCLE-equipment according to ASTM D-5001 measures the actual wear
scar size with a Test Ball specimen. The wear scar is generated by the
friction between the stationary ball and a rotating cylinder. A part of
the rotating cylinder is immersed in the turbine fuel tank (50 ml) and
covered with the turbine fuel. The temperature of the fuel tank is
controlled, as well as the relative humidity of the air which is
circulated into and above the test fluid – the air flow rate is
controlled, too. The Test Ball is loaded by a preselected load for the
test period 30 min. After the test the minor & major axis of the
resultant wear scar are measured with a microscope. Two measurements
have to be performed for getting an averaged result, the more lubricity
a Turbine Fuel has the lower is the resultant wear scar.
Technical Data
| Fluid volume: | 50 ± 1.0 ml |
| Fluid temperature: | 25 ± 1°C |
| Conditioned air: | 10 ± 0.2% RH at 25 ± 1°C |
|
Flow Rate through the fluid: |
0.5 L/min. |
|
Flow Rate over the fluid: |
3.3 L/min. |
| Pre-treatment time: | 15 min. |
| Applied load: | 1000 g |
| Cylinder rotational speed: | 240 ± 1 rpm |
| Test duration: | 30 ± 0.1 min |