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ASTM E100-14
Standard Specification for ASTM Hydrometers
10 стр.
Заменен
Печатное изданиеЭлектронный (pdf)
96.72 $ (включая НДС 20%)
Разработчик:
Зарубежные/ASTM
ICS:
17.060 Measurement. Including measuring instruments / Измерение объема, массы, плотности, вязкости. Включая измерительные приборы
Сборник (ASTM):
14.03 Sensory Evaluation; Temperature Measurement; Language Services and Products / Сенсорная оценка; Измерение температуры; Лингвистические услуги и продукты
Тематика:
Temperature Measurement
Описание
Реферат

This specification covers glass hydrometers of various scale graduation systems, as required by the ASTM test methods in which they are used. Hydrometers shall be of the constant-mass, variable-displacement type. Hydrometers shall be made of glass, except for the scale, ballasting material, and the thermometric liquid of thermohydrometers. Material used for ballast shall be secured to the lower part of the body, and no loose material of any sort may be inside a hydrometer. The stem shall be uniform in cross section, with no perceptible irregularities. The preferred shapes for the bodies of hydrometers are presented. Graduation lines and inscriptions shall be in a permanent black marking material, such as India ink. All hydrometers shall be graduated to read correctly where the plane of the level liquid surface intersects the stem. The thermometer shall be of the mercury-in-glass type, unless otherwise specified. Hydrometers shall be inspected, tested, and standardized in accordance with the requirements prescribed.

Область применения

1.1 This specification covers glass hydrometers of various scale graduation systems, as required by the ASTM Test Methods in which they are used.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.

Ключевые слова:
ballast; body; hydrometers; relative density; specific gravity; stem; thermohydrometers