Find the most up-to-date version of ASTM E at Engineering ASTM E() E1 Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation [ASTM International] on *FREE*. ASTM E Standard Practice for Obtaining Spectrometric Data for Object- Color Evaluation. This practice covers the instrumental measurement.
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Care should be taken not to touch the area to be measured except for application of a suitable cleaning procedure. The detector must be stable with time and have adequate responsivity over the wavelength range used. Some national laboratories will accept user supplied white material standards and supply a calibration of the re? In such cases, it is recommended 5 to use the substitution method of measurement rather than the comparison method 3.
Other standards calibrated to the perfect re? NOTE 1—Accuracy is here de? Subscription pricing is determined by: Users of this standard are 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. However, for the measurement of? Care must be taken to correct for this error 3, Test Method D Colorimetric data are obtained by combining object spectral data with data representing a CIE standard observer and a CIE standard illuminant, as described in Practice E Precision and Bias In such cases, verify the accuracy of the reading at the low end of the photometric scale by using a calibrated standard with re?
Examples of suitable veri? If the instrument requires calibration with a Grey tile to evaluate the single-beam integrating-sphere photometric nonlinearity, the linearity veri? No other units of measurement are included in this standard. Some modern, high brightness, retrore? This standard is also available to be included in Standards Subscriptions.
Standards Subsctiption may be the perfect solution. When wstm degree of directionality of the specimen is to be evaluated, uniplanar geometry should be used. Your Alert Profile lists the documents that will be monitored.
Care must also be taken to avoid discoloring of either area due to prolonged radiation or dirt, or partial translucency due to insufficient thickness of the coating.
More recently, discrete pseudo-monochromatic sources, such as light ast diodes LED have also been used as sources in colorimetric spectrometers. Last previous edition approved in as E — Exceptions to this applicability are noted. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
See Practice E As the voice of the U. The instrument user must assume the responsibility for s1164 the necessary material standards.
ASTM E – Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation
Please first log in with a verified email before subscribing to alerts. NOTE 3—For certain applications of the No other units of measurement are included in this standard. When information xstm directionality is not required, the several measurements may be averaged. Geometric notations may be found in Practice E NOTE 6—For all the conditions described in 8.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any ee1164 mentioned in this standard. The spectrometer may be either a typical colorimetric spectrometer, designed speci? Commonly used light sources include incandescent lamps, either operated without? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
This standard is not included in any packages. When the specimen does not exhibit directionality, any of the bi-directional geometries may be used. Standardization and Material Standards NOTE 5—When a hemispherical receiver such as an integrating sphere is used, and the specimen is placed?
Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation
A still better method for characterizing? 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. See also Guide E and Practice E Thus there is only one mode of measurement possible for the d: Inter-instrument agreement comparing different types of instruments, especially if different geometric parameters of the illuminating and viewing conditions are involved, is likely to be an order of magnitude poorer 23, The element should conform to the following requirements: 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.
Keeping the surface clean is essential as errors in apparent re?