ISO-1146-1988.pdf
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1、INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXAYHAPOAHAR OPTAHMBAMR I-IO CTAHAAPTMBAL(kll.4 Pyrometric reference cones for laboratory use - Specification C6nes pyroscopiques de r temperature of collapse: The temperature at which
2、 the tip of a pyrometric reference cone reaches the level on which the base of the cone is mounted when the cone is heated at a specified rate under specified conditions. 4 Dimensions and shape of cones 4.1 The nominal dimensions of a cone shall be as shown in figure I. 4.2 The shape of a cone shall
3、 be as indicated in figures 2 or 3. 4.3 A cone may lean in the direction of an edge, as in figure 2, or in the direction of a face, as in figure 3. The angle to the vertical to be made by the leading edge or face when the cone is mounted, shall be 8 + lo. Figure 2 Figure 3 Copyright International Or
4、ganization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 21:31:05 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 1146 : 1966 (El 5 Reference temperatures Each reference cone shall be
5、 of such composition that the temperature of collapse is one of the temperatures shown in table 1, with a tolerance of Z!I 5 K. 6 Rate of heating Each pyrometric reference cone conforming to this Interna- tional Standard shall be suitable for heating to its reference temperature at a rate of 2,5 K/m
6、in. Table 1 - Reference temperatures and cone designations Cone Temperature Cone Temperature designation % designation OC IS0 150 1500 IS0 166 1660 IS0 152 1520 IS0 168 1680 IS0 154 1540 IS0 170 1700 IS0 156 1560 IS0 172 1720 IS0 158 1580 IS0 174 1740 IS0 160 1600 IS0 176 1760 IS0 162 1620 IS0 178 1
7、780 IS0 164 1640 IS0 180 1800 7 Verification of temperature of collapse The reference temperature of each batch of cones having the same nominal reference temperature shall be verified for con- formity to clause 5 by carrying out the procedure specified in IS0 525 on a sample of the batch. The tempe
8、rature of collapse shall be determined by a calibrated thermocouple. The sample, to be taken at random from the batch, shall consist of 2 % of the batch with a minimum of two cones. 6 Marking Each reference cone conforming to this International Standard shall be marked with the appropriate cone desi
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- ISO 1146 1988
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