BS EN ISO 3016:2019 pdf download.Petroleum and related products from natural or synthetic sources - Determination of pour point.
7.2 In the case of pour points above 36 °C. use a higher range temperature measuring device (52) such as IP 63C or ASTM 61C. or a digital contact thermometer. Close the test jar with the cork carrying the test temperature measuring device (52) Adjust the position of the cork and temperature measuring device so the cork fits tightI the temperature measuring device and the jar are coaxial, and the temperature measuring device is immersed to the correct depth.
7.2.1 For liquid-in-glass, the thermometer bulb should be immersed so the beginning of the capillary Is 3 mm below the surface of the specimen.
7.2.2 For digital contact thermometers, the probe should be immersed so the end of the probe is
10 mm to IS mm below the surface of the specimen.
7.3 Subject the sample in the test jar to a preliminary treatment. appropriate to its pour point. In accordance with 7.4 or 7.5.
7.4 Samples having pour points above -33 °C shall be treated as follows,
7.4.1 Heat the sample without stimng to 9 °C above the expected pour point in a bath maintained at 12 °C above the expected pour point, or to 45 °C in a bath maintained at 48 C. whichever is greater.
7.4.2 Transfer the test jar to a bath maintained at 24°C t 1,5 °C and commence observations for pour point. When using a liquid bath, ensure that the liquid level Is between the 1111 mark on the test jar and the top of the test jar.
7.4.3 When the sample temperature reaches 9 °C above the expected pour point (estimated as a multiple of 3 °C), commence observations for flow in accordance with 7.7.
7.4.4 If the sample has not ceased to flow when the temperature has reached 27 °C, carefully remove the test jar from the bath. wpe the outside surface with a clean cloth moistened with wiping fluid and place It In the 0 C bath (5.7) in accordance with Z6. Make observations for flow in accordance with 7.2 and cool as specified in the schedule given in 7.
7.5 Samples having pour points of —33°C and below shall be treated as follows.
7.2.1 For liquid-in-glass, the thermometer bulb should be immersed so the beginning of the capillary Is 3 mm below the surface of the specimen.
7.2.2 For digital contact thermometers, the probe should be immersed so the end of the probe is
10 mm to IS mm below the surface of the specimen.
7.3 Subject the sample in the test jar to a preliminary treatment. appropriate to its pour point. In accordance with 7.4 or 7.5.
7.4 Samples having pour points above -33 °C shall be treated as follows,
7.4.1 Heat the sample without stimng to 9 °C above the expected pour point in a bath maintained at 12 °C above the expected pour point, or to 45 °C in a bath maintained at 48 C. whichever is greater.
7.4.2 Transfer the test jar to a bath maintained at 24°C t 1,5 °C and commence observations for pour point. When using a liquid bath, ensure that the liquid level Is between the 1111 mark on the test jar and the top of the test jar.
7.4.3 When the sample temperature reaches 9 °C above the expected pour point (estimated as a multiple of 3 °C), commence observations for flow in accordance with 7.7.
7.4.4 If the sample has not ceased to flow when the temperature has reached 27 °C, carefully remove the test jar from the bath. wpe the outside surface with a clean cloth moistened with wiping fluid and place It In the 0 C bath (5.7) in accordance with Z6. Make observations for flow in accordance with 7.2 and cool as specified in the schedule given in 7.
7.5 Samples having pour points of —33°C and below shall be treated as follows.
