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1、I 1 UDC 62-8221552.578.21543.062 I JAPANESE INDUSTRIAL STANDARD Fluid Contamination- Determination of Contaminants by the Gravimetric Method Translated and Published Japanese Standards Association Printed in Japan 6s COPYRIGHT Japanese Standards Association Licensed by Information Handling Services
2、COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 1 J I S B*9931 90 m q933bO 0025bb 3 m In the event of any doubt arising, the original Standard in Japanese is to be final authority. , i COPYRIGHT Japanese Standards Association Licensed by Information Handling Servic
3、es COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 2. J I S B*9931 90 m 4933608 0025697 5 m i UDC 62-822:552.578.2:543,062 JAPANESE INDUSTRIAL STANDARD J I S Fluid Contamination-Determination B 9931-1990 of Contaminants by the Gravimetric Method . . 1. Scope contam
4、inants of working fluid prepared from mineral oil in the hydraulic system by gravimetric method. This Japanese Industrial Standard specifies the method to measure the Remark: The units and numerical values given in I 1 in this Standard are in accordance with traditional units and are appended as inf
5、ormative reference. Definitions For the purpose of this Standard, the following definitions apply. working fluid prepared from mineral oil additives or refined mineral oil including additives (rust preventives, oxidation inhibitor, abrasion resistant agent, pour point depressant, antifoaming agent,
6、etc.) Refined mineral oil without (2) contaminants Solid particles and gel shape matter affecting undesirably the hydraulic system or elements and able to be grasped by the membrane filter for analysis with specified pore diameter 0.8 pm. 3. Instruments and Apparatus to Be Used for Measurement The i
7、nstruments and apparatus to be used for measurement shall be as follows. (1) Membrane Filter for Analysis The membrane filter for analysis (hereafter referred to as filter) shall be 47 mm in diameter and 0.8 pm in pore diameter. Applicable Standards: JIS B 7601-Trip Balances JIS K 8593-Petroleum Eth
8、er JIS K 8839-2-Propanol JIS K 8848-Hexane JIS R 3505-Volumetric Glassware COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services I J I S BX993L 90 W 4933608 0025698 7 W I 2 B 9931-1990 Pet
9、ri Dish 7.2 (7) and shall be able to store the filters in clean state. The petri dish is used for drying the filters in 7.2 (6) and Pincette filters. The pincette shall be flat in top ends not liable to injure the Measuring Cylinder capacity 100 ml in plugless type specified in JIS R 3505. The measu
10、ring cylinder shall be that of nominal P I Sample Bottle capacity about 250 ml with inner lid. The sample bottle shall be that made of glass or plastic in Remark: instead of inner lid, a clean plastic film may be used. Filtration Equipment (see Fig. 1). The filtration equipment shall consist of the
11、following Lid for upper funnel with dust preventive filter in pore-diameter 0.8 pm or under (hereafter referred to as lid). Upper funnel with scale in capacity 300 ml to hold down the periphery of filter and able to ensure the effective filteration area 960 mm2, Filter Fastening Filter supporting ba
12、se made of sintered glass or stainless steel Lower funnel Solvent resistant rubber plug Suction bottle Fig. 1. Filtration Equipment (Example) , ,-Lid with dust preventive filter Upper funnel m Membrane filter for analysis Filter supporting base Lower funnel Solvent resistant rubber plug %Fastening 3
13、- TO suction pump COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services (7) (9) -3 B 9931-1990 Washing Bottle of pore diameter 0.8 pm or under en route of the blowoff pipe line to enable f
14、iltering the reagent or solvent (see Fig. 2). The washing bottle shall be equipped with membrane filter Fig. 2. Washing Bottle (Example) Blowoff pipe line / Filter holding fitting made of metal Solvent resistant Filter supporting plate - Membrane filter in diameter 0.8 um or Filter supporting plate
15、Pressurising rubber ball (solvent resistant) Suctaan Pump 86.6 kPa 650 mmHg). The suctaan pump shall be able , J at-ain the vacuum of Gravimeter equivalent or superior to this in performace and the sensitivity shall be 0.1 mg. The gravimeter shall be that specified in JIS B 7601 or that Drying Appar
16、atus The drying apparatus shall be able to hold 80C. Desiccator desiccating agent. The desiccator shall be that to dry matters with using 4. Reagents and Solvents The reagents and solvents shall be those having been filtered by membrane filter with pore diameter 0.8 pm or under and shall be as follo
17、ws. (1) Distilled Water and Demineralized Water (2) Isopropyl Alcohol The isopropyl alcohol shall be grade 1 of JIS K 8839 or those equivalent or superior to this in quality. (3) Petroleum Ether The petroleum ether shall be grade 1 of JIS K 8593 or that equivalent or superior to this. Remark: Instea
18、d of petroleum ether, the special grade of JIS K 8848 or that equivalent or superior to this may be used. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services J I S B*9931 90 W 4933608 00
19、25700 L I 4 B 9931-1990 5. Measuring Apparatus The petri dish, pincette, measuring cylinder, lid, upper funnel with scale, filter supporting base, sample bottle and its lid shall be cleaned prior to every time of use in the following sequence. (1) Rinse with petroleum ether to remove oil content. (2
20、) Wash sufficiently in warm water with using neutral detergent and rinse twice with warm water. Rinse twice with filtered distillated water. Rinse with filtered isopropyl alcohol to remove water content. Rinse with filtered petroleum ether and then put inner lid as a small amount of petroleum ether
21、remains in the bottle and further put outer lid, (3) (4) (5) 6. Samdes The sampling method of samples, fluid sampling amount and sample for measurement shall be as follows. (1) Sample in the sample bottle about 200 ml of working fluid to be measured according to a proper method. (2) Take 100 ml as s
22、ample for measurement. Further, it is allowed to change the amount of sample suitably according to the degree of contamination. 7. Measuring Method 7.1 General The general common items shall be as follows. (1) Clean the filtration equipment, sample bottle, measuring cylinder, Petri dish, pincette, e
23、tc. prior to use according to the procedure of 5. The gravimeter and other apparatus and the like shall be stored in clean state, (2) (3) As the place of measurement, select the place of clean environment as little as possible in vibration. 7.2 Preliminary Measurement of Filters The preliminary meas
24、urement of filters shall be as follows: (1) Take out two filters from filter ves.se1 with using a pincette and mark on the peripheral part of filters by method not to be defaced “E“ on one filter (filter for measurement) and “T“ on other filter (filter for correction). COPYRIGHT Japanese Standards A
25、ssociation Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services 5 B 9931-1990 (2) Place two filters with E“ layed down on the supporting base of filters, insert between upper and lower funnels and fix these by fastening. (3) Rin
26、se the upper funnel with solvent. (4) Suck until the filters have been dried. (5) Loose the fastening, remove the upper funnel and stop to suck. (6) Insert two filters in Petri dish so as not to be one upon another with using pincette. Put the Petri dish in the dryer at 8OoC, open halfway the lid of
27、 Petri dish and dry for 30 min. (7) Transfer the Petri dish into desiccator, and allow to stand for 30 min with the lid of Petri dish half open. For the filters “E“ and “T“ taken out from desiccator, measure and record as follows: Place the filter IiEf1 on the gravimeter, measure swiftly and record
28、the mass of lEl W E (initial mass) in unit 0.1 mg. (b) Place the filter “T“ on the gravimeter, measure swiftly and record the mass of “T“ mT (initial mass) in unit 0.1 mg. (10) Return the measured and recorded filters “E“ and “TI to the Petri dish so as not to lie one upon another and store. Remark:
29、 In the case where the contamination level of sample is expected clearly to exceed 10 mg/100 ml, the use of filter “T“ may be abridged. 7.3 Measuring Procedure of Working Fluid Contamination The measuring procedure of working fluid contamination shall be as follows: (1) Mount two filters with filter
30、 “T“ in underway to the filter supporting base with using pincette and assemble the upper and lower funnels with fastenings. (3) (4) Shake the sample bottle sufficiently to suspend so that the particulates may be distributed uniformly as far as possible. Immediately, take the sample for measurement
31、100 ml into the measuring cylinder Further, according to the contamination level, the quantity of sample may be changed suitably. Pour the content of measuring cylinder in the upper funnel. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standard
32、s Association Licensed by Information Handling Services J I S BU9931 90 m 4933608 0025702 5 m i 6 B 9931-1990 (5) Take about 50 ml of filtered solvent in the measuring cylinder and while washing the internal part of measuring cylinder with using washing bottle, pour into the upper funnel. Put the li
33、d on the upper funnel. Suck until about 2 ml remains in the upper funnel. Remove the lid of upper funnel, pour solvent of about 50 ml along the inner wall of upper funnel with using the washing bottle and put on the lid. Suck until the filter has been dried. Remove the lid, fastening and upper funne
34、l. While sucking, flow the solvent in jet style from washing bottle at periphery of filter “E“ to remove oil content sufficiently. Stop the suction. Repeat the procedures of 7.2 (6) to (8). Take out the filter “E“ place on the gravimeter, measure swiftly and record the mass of “E“ M (final mass of t
35、he filter for measurement)in unit 0.1 mg. Take out the filter “Ttt, place on the gravimeter, measure swiftly and record the mass of “T“ MT (final mass of the filter for correction) in unit 0.1 mg, 8. Calculation and Report of Measured Results ( 1 Calculation of Measured Results as follows. The calcu
36、lation of measured results shall hf= (ME-?&) - (MT-mT) where, M : contaminant (mg) ME: final mass of filter for measurement (mg) m : initial mass of filter for measurement (mg MT: final mass of filter for correction (mg) mT: initial mass of filter for correction (mg) (2) Report of Measured Results T
37、he report of measured results shall be as follows. (a The unit of contaminant “Mtt shall be in mg/100 ml of working fluid unit. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services I I 7.
38、 B 9931-1990 (b) In the case where the quantity of sample for measurement is different from 100 ml, convert the result to 100 ml. Remarks 1. In the case where MT-rnT exceeds 0.5 mg, judge that the sufficient rinsing has not been conducted and in .this case, increase the quantity of solvent for rinsi
39、ng and repeat again the procedures for measurement. 2. In the case where-the increment of mass of filter for correction exists even in repetition of the above operation or in the case where the filter for correction “TI is not used, append the matter. COPYRIGHT Japanese Standards Association License
40、d by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services B 9931-1990 Edition 1 Japanese Text Established by Minister of International Trade and Industry Date of Establishment: 1990-03-01 Date of Public Notice in Official Gazette: 1990-03-0
41、5 Investigated by: Japanese Industrial Standards Committee Divisional Council on General Machinery This English translation is published by: Japanese Standards Association 1-24, Akasaka 4, Minato-ku, Tokyo 107 Japan O JSA, 1990 Printed in Tokyo by Hohbnnsha Co., Ltd. COPYRIGHT Japanese Standards Association Licensed by Information Handling Services COPYRIGHT Japanese Standards Association Licensed by Information Handling Services