ASTM D3245 Test Method for Pumpability of Industrial Fuel Oils
6. Apparatus
6.1 Thermometers, conforming to ASTM thermometers 63C, 64C, and 12C, or equivalent.
6.2 Oil Container, made of aluminum or aluminum alloy to the dimensions given in Fig. 1A and B. The cup (Fig. 1A) is a loose fit on the Model VW outer cylinder of the viscometer. The inner diameter of the cup shall not exceed the outside diameter of the viscometer outer cylinder by more than 0.4 mm or less than 0.15 mm. The cup has four grooves in the side to allow easy flow of oil past the outer viscometer cylinder; these align with four recesses in the cap (Fig. 1B) when in position. The cap supports the viscometer cup to which it is secured by a bayonet fitting.
6.3 Three-Speed Portable Viscometer Model VH, fitted with a 2 mN•m (20 gf•cm) spring and a Model VM outer cylinder having a plastic shaft and B inner cylinder (Fig. 2). A viscometer should be selected having a Multiplying Factor, that is, a viscometer factor, of not less than 0.25 P per division.
6.3.1 Four 5-mm (3/16-in.) holes are drilled symmetrically into the top of both the Model VM outer cylinder and guard ring, to allow oil to flow easily into the gap between the cylinders.
6.4 Water Bath, of any convenient size or shape such that the oil container can be immersed in it and the Ferranti viscometer can be placed in an operating position with the container in the bath. The bath shall be capable of being maintained at a temperature of 82 +/- 1°C (180 +/- 2°F).
6.5 Water Bath, similar to 6.4 which can be maintained at 10, 20, 30, 40, 50, and 55 +/- 0.5°C. The bath must also be capable of being cooled at 0.5°C/min (1°F/min) to 2°C (35°F) such that at any time the temperature does not differ from the required temperature by more than +/-0.5°C.
7. Safety Precautions
7.1 Fuel oil samples to be tested are combustible and require cautious handling as indicated in A2.1.
