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Standard Guide for Use of Freezing-Point Cells for Reference Temperatures
STANDARD published on 10.10.1998
Designation standards: ASTM E1502-98
Note: WITHDRAWN
Publication date standards: 10.10.1998
SKU: NS-41982
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
Calibration-temperature instrumentation, Cryoscopic constant, Freezing plateau, Freezing-point cell, ITS-90, Qualification test, Recalescence, Reference materials (RM), Reference temperature, Resistance thermometers, Thermocouples, Thermometers, Undercool, freezing-point cells-reference temperatures, guide, ICS Number Code 17.200.20 (Temperature-measuring instruments)
1. Scope | ||||
1.1 This guide describes the essential features of freezing-point cells and auxiliary apparatus, and the techniques required to realize freezing points in the temperature range from 29 to 1085°C. 1.2 Detailed design and construction are not addressed in this guide. 1.3 This guide is intended to describe good practice and establish uniform procedures for the realization of freezing points. 1.4 This guide emphasizes principles. The emphasis on principles is intended to aid the user in evaluating cells, in improving technique for using cells, and in establishing procedures for specific applications. 1.5 For the purposes of this guide, the use of freezing-point cells for the accurate calibration of thermometers is restricted to immersion-type thermometers that, when inserted into the reentrant well of the cell, (1) indicate the temperature only of the isothermal region of the well, and (2) do not significantly alter the temperature of the isothermal region of the well by heat transfer. 1.6 This guide does not address all of the details of thermometer calibration. 1.7 This guide is intended to complement special operating instructions supplied by manufacturers of freezing-point apparatus. 1.8 The following hazard caveat pertains only to the test method portion, Section 7, of this guide. This standard does not purport to address all of the safety problems, 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. |
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2. Referenced Documents | ||||
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