SIST EN 22719:1998
(Main)Petroleum products and lubricants - Determination of flash point - Pensky-Martens closed cup method (ISO 2719:1988)
Petroleum products and lubricants - Determination of flash point - Pensky-Martens closed cup method (ISO 2719:1988)
Migrated from Progress Sheet (TC Comment) (2000-07-10): Decision of BT to submit this ISO document to UAP procedure.
Mineralölerzeugnisse und Schmierstoffe - Bestimmung des Flammpunktes - Verfahren nach Pensky-Martens im geschlossenen Tiegel (ISO 2719:1988)
Diese Internationale Norm beschreibt Verfahren unter Verwendung des Gerätes mit geschlossenem Tiegel nach Pensky-Martens zur Bestimmung des Flammpunktes von brennbaren Flüssigkeiten, Flüssigkeiten mit suspendierten Feststoffen, Schmierölen, Flüssigkeiten, die unter Versuchsbedingungen zur Ausbildung einesOberflächenfilms neigen und anderen Flüssigkeiten. Flammpunkte und Brennpunkte im offenen Tiegel von Mineralölerzeugnissen werden nach ISO 2592:1973 "Mineralölerzeugnisse; Bestimmung von Flamm- und Brennpunk- ten; Verfahren nach Cleveland im offenen Tiegel" bestimmt.
Produits pétroliers et lubrifiants - Détermination du point d'éclair - Méthode Pensky-Martens en vase clos (ISO 2719:1988)
Nafni proizvodi in maziva - Določanje plamenišča - Metoda z zaprto posodo po Pensky-Martensu (ISO 2719:1988)
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Mineralölerzeugnisse und Schmierstoffe - Bestimmung des Flammpunktes - Verfahren nach Pensky-Martens im geschlossenen Tiegel (ISO 2719:1988)Produits pétroliers et lubrifiants - Détermination du point d'éclair - Méthode Pensky-Martens en vase clos (ISO 2719:1988)Petroleum products and lubricants - Determination of flash point - Pensky-Martens closed cup method (ISO 2719:1988)75.100MazivaLubricants, industrial oils and related products75.080Naftni proizvodi na splošnoPetroleum products in generalICS:Ta slovenski standard je istoveten z:EN 22719:1993SIST EN 22719:1998en01-maj-1998SIST EN 22719:1998SLOVENSKI
STANDARD
SIST EN 22719:1998
SIST EN 22719:1998
SIST EN 22719:1998
ISO T’I\TIYXB AT A TTT-r\AT A 1 Cl-A lKTl3 A R n 3710 I IlY Ili;1\1YAII~lYnr UIAIAU~~1~1 &/ 12 Second edition 1988-12-01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXJJYHAPOAHAFI OPrAHM3A~MR l-l0 CTAH~APTM3A~MM Petroleum products and lubricants - Determination of flash Point - Pensky-Martens closed cup method Produits p&roliers et lubrifian ts - Determination du Point d%clair - Methode Pensky-Martens en vase clos Reference number ISO 2719: 1988 (E) SIST EN 22719:1998
IsO2719:1988(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of l national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated, to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 2719 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants. This second edition cancels and replaces the first edition (ISO 2719 : 19731, of which it constitutes a technical revision. Annexes A, B and C form an integral part of this International Standard. 0 International Organization for Standardization, 1988 Printed in Switzerland SIST EN 22719:1998
INTERNATIONAL STANDARD ISO 2719 : 1988 (E) Petroleum products and lubricants - Determination of flash Point - Pensky-Martens closed cup method 1 Scope This International Standard specifies methods, using the Pensky-Martens closed cup apparatus, for determining the flash Point of combustible liquids, liquids with suspended solids, lubricating oils, liquids that tend to form a surface film under the test conditions, and other liquids. Open cup flash and fire Points of Petroleum products may be determined by the use of ISO 2592 : 1973, Petrofeumproducts - Determination of flash and fire Points - Cleveland open cup method. Flash Points of paints and varnishes and drying oils may be determined by the use of ISO 1523 : 1983, Paints, var- nishes, Petroleum and related products - Determination of flashpoin t - Closed cup equillbrium method. NOTES 1 The method described in this International Standard may be employed for the detection of contamination of lubricating oils by minor amounts of volatile material, which also often occur in heat transfer oils due to partial cracking. However, the lowest temperature at which such a liquid is capable of producing an ignitable atmosphere may be lower than that found by this method. (See also clause 6, second Paragraph, and 7.3, note.) 2 This International Standard should be used to measure and describe the properties of materials, products or Systems in response to heat and flame under controlled laboratory conditions. Under actual fire conditions the response to heat and flame may be different. 1 2 Definition flash Point: The lowest temperature, corrected to a barometric pressure of 101,3 kPa, at which application of a test flame Causes the vapour of a test portion to ignite under specified conditions of test. NOTES 1 The Sample is deemed to have flashed when a large flame appears and instantaneously propagates itself over the surface of the Sample. 2 Occasionally, particularly near the actual flash Point, the application of the test flame will Cause a blue halo or an enlarged flame; this is not a flash and should be ignored. 3 Principle The test Portion is heated at a slow, constant rate with con- tinual stirring in a cup closed by a lid. A small flame is directed through an opening (kept closed at other times) into the cup at regular temperature intervals with simultaneous interruption of stirring. The flash Point is the lowest temperature at which application of the test flame Causes the vapour above the test Portion to ignite. 4 Apparatus 4.1 Thermometer, partial immersion, conforming to the appropriate specification in annex A : - low range, for samples giving a flash Point between 10‘ OC and 110 OC; - medium range, such as ASTM 88C or IP IOIC ther- mometers; - high range, for samples giving a flash Point between 110 OC and 370 OC. 4.2 Pensky-Martens closed cup apparatus, as described in annex B. Automatic flash Point testers are available and in use which may be advantageous in the saving of testing time, in permit- ting the use of smaller samples, and in other factors which may merit their use. If automatic testers are used, the user shall be sure that all the manufacturer’s instructions for calibrating, adjusting and operating the instrument are followed. In any cases of dispute, the flash Point as determined manually shall be considered the referee test. 4.3 Adapter, for use with Iow-range thermometer (sec annex C). 5 Preparation of apparatus Support the apparatus on a level, steady table. Unless tests are made in a draught-free room or compattment, it is good prac- tice, but not obligatory, to surround the tester on three sides with a shield approximately 400 mm wide and 600 mm high. 6 Preparation of test Sample Test samples shall not be stored in polyethylene, polypropylene or other plastics bottles, because volatile material may diffuse through the Walls of the bottle. 1 SIST EN 22719:1998
ISO 2719 : 1988 (EI If it is suspected that a test Sample contains volatile con- taminants, the treatment described in 6.1 and 6.2 shall be omitted. 6.1 Test samples of very viscous materials may be warmed until they are reasonably fluid before they are tested. However, no test Sample shall be heated more than is absolutely necessary. A test Sample shall never be heated above a temperature 17 OC below its expected flash Point. the heating chamber (or cooling bath in the case of an expected flash Point below ambient temperature - see 6.3). Ensure that the cup is properly seated. Insert the thermometer. Light the test flame and adjust it to a diameter of 4 mm + 0,5 mm. Heat at a rate such that the temperature as indicated by the ther- mometer increases 5 OC/min to 6 OC/min. Turn the stirrer at 90 r/min to 120 r/min, so that the test portion is made to flow from top to bottom. If the temperature differente between the melting Point and flash Point of a liquid is less than 20 OC, heat the Sample to 3 OC & 1 OC above its melting Point and immediately transfer a test Portion into the cup and proceed as in clause 8, neglecting minimum temperatures specified in this clause. 7.2 For products whose flash Point is expected to be equal to or below 110 OC, apply the flame at each degree up to 110 OC, beginning at a temperature between 18 OC and 28 OC below the expected flash Point. Apply the test flame by operating the mechanism on the lid which controls the shutter and test flame burner so that the flame is Iowered into the vapour space of the cup in 0,5 s, left in its lowered Position for 1 s, and quickly retracted. DO not stir the test Portion while applying the test flame. (See also 6.1, second Paragraph.) 7.3 If the test Portion is expected to have a flash Point above 110 OC, apply the test flame in the manner just described at each temperature that is a multiple of 2 OC, beginning at a temperature between 17 OC and 28 OC below the expected flash Point. NOTE - The procedure described in 7.2 and 7.3 is not necessarily ap- plicable when the test is run to determine the possible presence of 6.2 Test samples containing dissolved or free water may be dehydrated with Calcium chloride or by filtering through a qualitative filter Paper or a loose plug of dry absorbent cotton. Warming the test Sample is permitted, but it shall not be heated for prolonged periods or above a temperature 17 OC below its expected flash Point. On removing water, any water-soluble flammable ma- terial present is also likely to be removed. 6.3 For expected flash Points below ambient temperature, volatile contaminants. prepare the apparatus as follows. 6.3.1 Remove the test cup assembly (including lid, ther- mometer and stirrer) from the apparatus. 6.3.2 Place the test cup assembly in a suitable cooling bath (water or a 1 + 1 mixture of water and ethylene glycol may be used). The bath shall include a stirrer and cover. Provide sup- port for the test cup assembly in the bath so that the lid and up- per edge are horizontal and the cup is immersed in direct con- tact with the bath liquid in such a Position that the level of the test Portion in the cup is the same as that of the liquid in the water bath. 7.4 Record as the flash Point the temperature read on the thermometer at the time the second or subsequent application of the test flame, up to the twentieth application, Causes a distinct flash in the interior of the CUP. DO not confuse the true flash Point with the bluish halo that sometimes surrounds the test flame at applications preceding the one that Causes the ac- tual flash. NOTE - If acetone and dry ice are used to cool the bath, do not use in direct contact with the bath liquid. If a flash is observed on the initial test flame application, or if no flash has been observed by the twentieth application, the pro- cedure shall be started again with a new test portion, this time fixing a lower or a higher expected flash Point, respectively. If a flash is observed at the initial test flame application but no flash is observed at a temperature lower than that of the initial test flame application, then the temperature of the initial test flame application is taken as the flash Point. 6.3.3 When the thermometer , in contact with the test por- tion, reaches a temperature at leas t 5 OC below the expected flash Point, remove the bath. Apply the test flame every 1 OC as the higher ambient temperature Causes the test portion to rise in temperature. 8 Alternative procedure for highly viscous products 7 Procedure 7.1 Thoroughly clean and dry all Parts of the cup and its accessories before starting the test. Ensure that all traces of solvent used to clean the equipment have been completely removed. Fill the cup with the test Portion to the level indicated by the filling mark. Place the lid on the cup and set the latter in 8.1 Bring the material to be tested and the tester to a tem- perature of 15 OC & 5 OC or 11 OC lower than the expected flash Point, whichever is the lower. Turn the stirrer at 250 r/min + 10 r/min, stirring so that the test Portion is made to flow from top to bottom. Raise the temperature throughout the duration of the test at a rate of not less than 1 OC/min and not more than 1,5 OC/min. With the exception of these re- quirements for rates of stirring and heating, proceed as prescribed in clause 7. 2 SIST EN 22719:1998
ISO 2719 : 1988 (EI 8.2 If the temperature differente between the melting Point and flash Point of a test material is less than 14 OC, heat the Sample to 3 OC + 1 OC above its melting Point and immediately transfer a test Portion into the cup and proceed as in clause 7, neglecting minimum temperatures specified in the clause. 8.3 Examples of highly viscous materials are heavy oils, polymeric solutions, adhesives, etc. If the results obtained with such materials, following the directions in clauses 6 and 7, are in doubt, repeat using the alternative procedure given in this clause. The higher flash temperature shall be considered the flash Point of the material. 9 Calibration 9.1 Determine the flash P
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