Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Test Method for Measuring Apparent Viscosity of Lubricating Greases
Přeložit název
NORMA vydána dne 1.8.2017
Označení normy: ASTM D1092-12(2017)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.8.2017
Kód zboží: NS-689965
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
apparent viscosity, capillary, lubricating grease, shear rate, viscosity,, ICS Number Code 75.100 (Lubricants, industrial oils and related products)
Significance and Use | ||||||
5.1 Apparent viscosity versus shear rate information can be useful in predicting pressure drops in grease distribution systems under steady-state flow conditions at constant temperature. |
||||||
1. Scope | ||||||
1.1 This test method covers measurement, in poises, of the apparent viscosity of lubricating greases in the temperature range from −54 °C to 38 °C (−65 °F to 100 °F). Measurements are limited to the range from 25 P to 100 000 P at 0.1 s−1 and 1 P to 100 P at 15 000 s−1. Note 1: At very low temperatures the shear rate range may be
reduced because of the great force required to force grease through
the smaller capillaries. Precision has not been established below
10 s−1.
1.2 This standard uses inch-pound units as well as SI (acceptable metric) units. The values stated first are to be regarded as standard. The values given in parentheses are for information only. The capillary dimensions in SI units in Fig. A1.1 and Fig. A1.2 are standard. 1.3 1.3.1 In addition, temperature measuring devices such as liquid-in-glass thermometers, thermocouples, thermistors, or platinum resistance thermometers that provide equivalent or better accuracy and precision, that cover the temperature range for ASTM thermometer 49C, may be used. 1.4 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, health and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||
2. Referenced Documents | ||||||
|
Chcete mít jistotu, že používáte pouze platné technické normy?
Nabízíme Vám řešení, které Vám zajistí měsíční přehled o aktuálnosti norem, které používáte.
Chcete vědět více informací? Podívejte se na tuto stránku.
Poslední aktualizace: 07.05.2024 (Počet položek: 2 897 585)
© Copyright 2024 NORMSERVIS s.r.o.