ASTM E563 PDF
Purchase your copy of ASTM E – 11() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. Find the most up-to-date version of ASTM E at Engineering Designation: E – 11Standard Practice for Preparation and Use of an Ice-Point Bath as 1 This practice is under the jurisdiction of ASTM Committee E20 on.
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Impurities in the water usually lower the temperature. It is also intended to be adequate for most other ice-point reference purposes. Precision and Bias 8. Use an opaque and thermally insulating cover or stopper that is suitable for the application.
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. As ice melts, the interface moves away from the test object, and a temperature difference, which can be as much as several kelvins, is established between the test object and the heat sink.
The moment new editions of the standards you monitor are released, changes are made, or appendixes are published, qstm will be alerted by email. In most cases, pressure effects can be ignored 4. There is a corresponding effect for changes in atmospheric pressure.
A number in parentheses indicates the year of last reapproval. E63 presence of excess water can be detected if water overspill occurs when the ice axtm depressed. Use clean plastic gloves to handle the ice and equipment. NOTE 1—When liquid-in-glass thermometers are tested in an ice point bath, the bath may be left uncovered. Also, some of the water may freeze and bridge some of the particles.
Monitoring Standards monitoring is a free service designed for you e536 wish to be alerted of changes to or new editions of the standards required in your work.
The loss of precision between a covered and uncovered bath may be below the resolution of liquid-in-glass thermometers. Read more about subscriptions. This reduces aetm time to reach equilibrium at the ice point. You need to log in before adding standards to the monitoring service.
Users of this standard astn expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
For thermoelectric thermo-elements of high thermal conductivity, as much as mm immersion may be necessary. Temperature differences of 0. This ensures that you are always up-to-date and saves you both time and money. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Add to Alert PDF. Thoroughly rinse the equipment with tap water, then rinse with the type of water used for the ice-point bath medium.
For usual applications, a diameter of at least 70 mm and a depth of at least mm may be adequate. Summary of Practice 4. This standard is also available to be included in Standards Subscriptions. Your comments are invited asm for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Standards monitoring is a free service designed for you who wish to be alerted of changes to or new editions of the standards required in your work. At steady state conditions, an error results that depends primarily on the thermophysical properties of awtm object, its dimensions and its depth of immersion in the ice-point bath. The benefits of a subscription: A asstm epsilon indicates an editorial change since the last revision or reapproval.
If the document sstm revised or amended, you will be notified by email. Use of the bath must be delayed long enough to establish thermal astk, and the particles shall be sufficiently small so that the bath approaches the required state of ice and air-saturated water in intimate contact.
The uniformity of temperature of the bath can be enhanced by slowly stirring or agitating the slush of ice and water either manually or by a powered stirring means so that all of the ice and water in the bath come into intimate contact. Excessive water in the bath can cause an increase in temperature as denser warm water settles to the bottom.
ASTM E – pdf全文-调研报告-在线文档
This service is not available if you are a URL user where you do not log in with an email address. Large chunks of very cold ice added to a bath can e63 local temperature depression. Already Subscribed to this document. Need more than one copy? For this reason surplus water should be removed, as it accumulates, from the bottom of the bath by decanting or siphoning.