BS-EN-116-1998.pdf
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1、BRITISH STANDARD Methods of test for Petroleum and its products Part 309. Diesel and domestic heating fuels - Determination of cold filter plugging point (Identical with IP 309/99) The European Standard EN 116 : 1997 has the status of a British Standard BS EN 116 : 1998 BS 2000 : Part 309 : 1998 NO
2、COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS 2000 : Part 309 : 1998 National foreword This British Standard w a s published under the authority of the Materials and Chemicals Sector Board and comes into effect on 18 May 1998. It is the English language version of EN 1 16 :
3、1998 Diesel and domestic heating fuels - Determination of cold fizter plugging point, published by the European Committee for Standardization (CEN). This British Standard supersedes EN 116: 1981 / BS 6188: 1982, which is withdrawn. BS 2000 comprises a series of test methods for petroleum and its pro
4、ducts that are published by the Institute of Petroleum (IP) and have been accorded the status of a British Standard. Each method should be read in conjunction with the preliminary pages of IP Standard methods for analysis and testing of petroleum and related products which gives details of the BSI/I
5、P agreement for publication of the series, provides general information on safety precautions, sampling and other matters, and lists the methods published as Parts of BS 2000. The numbering of the Parts of BS 2000 follows that of the corresponding methods published in IP Standard methods for analysi
6、s and testing of petroleum and related products. Under the terms of the agreement between BSI and the Institute of Petroleum, BS 2000 : Part 3091BS EN 116 will be published by the IP (in Standard methods for analysis and testing of petroleum and related products and British Standard 2000 Parts and a
7、s a separate publication). BS 2000 : Part 309 : 1998 is thus identical with IP 309/99. Compliance with a British Standard does not of itself confer immunity from legal obligations. 0 The institute of Petroleum b) a brass screw cap to connect the upper part of the body of the filter unit (6.1.8.2) to
8、 the lower part of the pipette (6.1.8.1) to ensure a leak-free joint. An example of satisfactory connection is shown in figure 7; c) a disc, 15 mm diameter, of plain weave stainless steel wire mesh gauze with a nominal aperture size of 45 pm. The nominal diameter of the wire shall be 32 ,um and -,-,
9、- Page 6 EN 116: 1997 the tolerance for the size of an individual aperture shall be as follows: 1) no aperture size shall exceed the nominal size by more than 22 pm; 2) the average aperture size shall be w i t h i n k 3,l pm of the nominal size; 3) not more than 6 % of the apertures shall be above t
10、he nominal size by more than 13 pm. NOTE : The requirements for the wire mesh are taken from IS0 3310-13), to w h i c h reference may be made for methods for testing the gauze. d) a filter holder of brass, in which the disc of wire mesh gauze 6.1.8.2 c) is firmly clamped by a retaining ring pressed
11、into the filter holder. The diameter of the exposed part of the gauze shall be (12+O*) mm (see figure 8); e) a brass cylinder, threaded on the outside, that can be screwed into the cavity of the body 6.1.8.2a) to clamp the filter holder 6.1.8.2 d) against the O-ring 6.1.8.2a). The lower end shall ha
12、ve four slots to allow the test portion to flow into the filter unit. O 6.1.9 Thermometers The following thermometers are required: a) high-range thermometer, range -38 O C to +50 O C , for measuring cold filter plugging point down to -30 OC; b) low-range thermometer, range -80 O C to +20 OC, for me
13、asuring cold filter plugging point below -30 OC; c) cooling bath thermometer, range -80 O C to +20 OC. Thermometers conforming to the essential requirements set out in annex A to this standard shall be used. 6.1.10 Cooling bath The type of cooling bath is optional, but it shall be of a shape and siz
14、e suitable for containing the jacket (6.1.3) in a stable and upright position at the required depth. The bath shall be fitted with a cover with one or more holes in it to accommodate the supporting ring (6.1.6). The jacket (6.1.3) may be fixed permanently in the lid. The bath temperature shall be ma
15、intained at the required value by a refrigeration unit or by the use of suitable freezing mixtures, ensuring a homogenous temperature in the bath by stirring or other means of agitation. 3) IS0 3310-1: Test sieves - Technical requirements and testing - Part 1: Metal cloth -,-,- STD=BSI BS EN 116-ENG
16、L 1998 1624669 07LYbbb 2LT = Expected cold filter plugging point Above -20 “C Between -20 O C and -35 “C Below -35 O C Page 7 EN 116:1997 Required cooling bath temperature(s) (-34 0,5) O C (-34 f 0,5) OC, then (-51 1,0) O C (-34 f 0,5) OC, then (-51 f 1,0) OC, then(-67 f 2) “C The bath temperatures
17、given in table 1 shall be used, for different levels of cold filter plugging point. These may be obtained either by separate cooling baths or by adjusting the refiigeration unit. If a refrigeration unit is used it shall be capable of changing the bath temperature within 2 min 30 s. Table 1 : Cooiing
18、 bath temperature If several testing units are placed in one large cooling bath, the distance between the jacket wells shall be at least 50 mm. 6.1.11 Stopcock, glass, with double oblique bore of 3 rmn bore diameter. 6.1.12 Vacuum source, vacuum pump or water pump powerful enough to ensure an air fl
19、ow rate in the vacuum regulator (6.1.13) of (15 i 1) l/h for the duration of the test. 6.1.13 Vacuum regulator, consisting of a glass bottle, at least 350 mm high, not less than 5 1 capacity, partially filled with water. It shall be closed by a stopper with three holes of convenient diameters for gl
20、ass tubes. Two tubes shall be short and shall not go below the water level. The third tube, with an internal diameter of (10 f 1) m, shall be long enough for one end to be approximately 200 mm beneath the surface of the water while the other end reaches a few centimetres above the stopper. The depth
21、 of the immersed part shall then be adjusted to obtain a depression of (200 f 1) mm (2O ) kPa on the manometer which shall contain water. A second empty 5 1 bottle shall be fitted in the line, to serve as vacuum reservoir to ensure a constant depression. The arrangement is shown in figure 1. -0.05 6
22、.1.14 Stopwatch, with a graduation or reading of 0,2 s or lower, with an accuracy of 0,l % over a period of 10 min. 6.2 Automated equipment 6.2.1 General The automated equipment shall include elements conforming to 6.1.2 to 6.1.8, platinum resistance thermometers, cooling bath), vacuum pump and suit
23、able electronic control devices. 6.2.2 Cooling bath The refrigeration unit used shall be capable of maintaining the cooling bath at the required temperature (see table 1) and also of automatically changing the bath temperature within 2 min 30 s at the appropriate stage, as given in table 1. -,-,- Pa
24、ge 8 EN 116:1997 6 . 2 . 3 Vacuum source Vacuum pump powerful enough to ensure an air flow rate in the vacuum regulator of a minimum of 15 I/h, and to maintain a constant vacuum of (200 f 1) mm (2J kPa for the -0. duration of the test. For multi-position testers using the same vacuum source, the flo
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