ASTM D2595 Test Method for Evaporation Loss of Lubricating Greases
ASTM D2595 Standard Test Method for Evaporation Loss of Lubricating Greases Over Wide-Temperature Range
8. Preparation of Apparatus
8.1 Clean thoroughly all parts of the evaporation cell assembly.
8.2 With Fig. 1 as reference, connect the cover-eduction tube (C) to the hood (B). Adjust thermocouple tube so that the bottom of the tube is flush with face of hood as shown. Insert thermocouple in tube and adjust so that tip is flush with bottom edge of tube. Fasten the thermocouple securely in this position by compressing the top edge of the tube. Remove the tube-thermocouple assembly and disconnect the hood from the cover-eduction tube.
8.3 Clean thoroughly all parts of the evaporation cell assembly.
8.4 Place the cover-eduction tube (C) thermocouple assembly and gasket in the heating device as shown by Fig. 4. Fasten the cover securely in position.
8.5 Adjust the temperature of the heating device to maintain the test temperature and control within ±1.0°C (±2°F). Use the thermometer for this observation.
8.6 Regulate air flow through the assembly to 2.58 ± 0.02 g/min (2 litres/min at standard temperature and pressure).
8.7 By regulating the air preheater, adjust the exit air temperature to the specified test temperature within ±1.1°C (±2°F). Use the thermocouple plus a temperature indicator or recorder for this measurement.
8.8 Maintain the temperatures of the heating device and exit air and the air flow rate for at least 0.5 h prior to test.
