ASTM D381 PDF

D – 80e1 Standard Test Method for Existent Gum in Fuels by Jet Evaporation, E1 Specification for ASTM Liquid-in-Glass Thermometers. E29 Practice for. Evaporation, is based on ASTM D − 12, Standard Test Method for Gum Content . turbine fuels to be determined by either Test Method D or IP , with. ASTM D36 · ASTM D56 · ASTM D86 · ASTM D92 · ASTM D93 · ASTM D97 · ASTM D · ASTM D · ASTM D · HGT / Gum Testers · HGT

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The gum content is the nonvolatile residue that is left after the evaporation of the sample under controlled conditions.

Existent Gum Solid Block Bath | ASTM D | IP

Large quantities of gum are an indicator for the contamination of fuel caused by higher boiling oils or particles. Historical Version s – view previous versions of standard. Copyright Stanhope—Seta Limited It has been proved that high gum can cause induction-system deposits and sticking of intake valves, and in most instances, it can be assumed that low gum will ensure absence of induction-system difficulties.

The quality of different fuels, e. The primary purpose of the test method, as applied to motor gasoline, is the measurement of the oxidation products formed in the sample prior to or during the comparatively mild conditions of the test procedure.

For motor gasoline an additional treatment is necessary: By using our website you consent to all cookies in accordance with our Cookie Policy.

Calibration and verification equipment available. The general procedure for the determination awtm the gum content in astn is described in the following standards: During the test procedure, a measured quantity of fuel 50 mL is evaporated under controlled temperature conditions by a constant flow of either hot air or steam, depending on the sample. This website uses cookies to improve user experience. The flow of steam or air is adjusted by an inlet control valve and monitored on a Bourdon gauge calibrated for both air and steam.

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Gum can also be caused by chemical reactions of some fuel components with each other or with oxygen. Why is measuring the gum content important?

Generally, the gum content reflects inappropriate production processes and poor fuel handling in the refinery or the storage facility. The bath has five test wells, and a thermometer well.

Seta Existent Gum Solid Block Bath – Steam or Air

Since the gum content can change according to the age of the fuel and the exposure to oxygen, the reported content is only true at the time of measurement. A Solid Block Bath designed to carry out up to five simultaneous tests for determining existent gum content in fuels by the Jet Evaporation method.

With respect to aviation turbine fuels, large quantities of gum are indicative of contamination of fuel by higher boiling oils or particulate matter and generally reflect poor handling practices in distribution downstream of the refinery. The use of air, on the other hand, is used for testing motor gasoline. Caution should be taken when handling mercury and aetm containing products.

ASTM D – 09 Standard Test Method for Gum Content in Fuels by Jet Evaporation

Mercury, or its vapor, may be hazardous to health and corrosive to materials. Outlets can be individually checked for uniform flow of air or v381.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This residue can be a result of, e. In this case, the beaker containing the residue is weighed before and after the washing procedure.

Jet evaporation method IP Determination of the existent gum content of aviation turbine fuel – Jet evaporation method ASTM D Standard test method for gum content in fuels by jet evaporation IP Standard test method for gum content in fuels by jet evaporation.

Steam Generator or Rotary Compressor is required for operation. In contrast to the ASTM and ISO method, the IP method allows both air or steam as the v381 medium for examining aviation turbine fuels but requires air for testing motor gasoline. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

How to measure the gum content of fuels. The amount of gum indicates the condition of the sample at the time of the measurement. This is the reason why stabilizing agents, such as oxidation inhibitors, are added in order to increase the fuel stability. The gum content can be used to judge the quality of various products. Link to Active This link will always route asym the current Active version of the standard. How atsm I measure the gum content?

Historical Version s – view previous versions of standard Translated Version s: