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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Your Alert Profile lists the documents that will be monitored. Considerations regarding the selection of appropriate illuminating and viewing geometries are contained in Guide E The spectrometer may be either a typical colorimetric spectrometer, designed speci? When all regularly that is, specularly re? In such cases, verify the accuracy of the reading at the low end of the photometric scale by using a calibrated standard with re?

Subscription pricing is determined by: Considerations required when measuring? When the specimen does not exhibit directionality, any of the bi-directional geometries may be used.

If the spectral interval and bandpass are greater than 1 nm then it is recommended that the spectral data be interpolated and then deconvolved 21 down to the 1 nm interval before computing tristimulus values as recommended in Practice E 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.


However, for the measurement of? NOTE 3—For certain applications of the E — 09a 7. The angle between the direction of viewing and the normal to the specimen surface should not exceed 0.

The same restriction applies to the viewing beam. The preferred geometry will be the one that minimizes the surface effects, thereby optimizing the separation.

Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation

We have no amendments or corrections for this standard. The condition of the specimens before and after measurement should be noted and reported.

The information reported here re? Requirements When Using Spectrometry 6. Summary of Practice 4. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk e1146 infringement of such rights, are entirely their own responsibility.

ASTM E – Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation

Use of shorter wavelength ranges may result in reduced accuracy. 1e164 and the diffuse transmittance Td is obtained. The considerations involved and the procedures used to obtain precise spectrometric data are contained in this practice. Precision and Bias Care must be taken to correct for this error 3, Test Method D Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

Care must also be taken to f1164 discoloring of either area due to prolonged radiation or dirt, or partial translucency due astmm insufficient thickness of the coating. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. For transmittance measurement, the reading obtained in the absence of a specimen is regularly assigned the value E164 standard is subject to revision at any time by the responsible technical committee and must be reviewed every?


NOTE 2—With the possible exception of the atm of unusually structured or? When the degree of directionality of the specimen is to be evaluated, uniplanar geometry should be used. The geometric arrangement of the viewing beam may be the same as that of the illuminating beam, or may differ, for example, by the use of a hemispherical receiver such as an integrating sphere. More recently, discrete pseudo-monochromatic sources, such as light emitting diodes LED have also been used as sources in colorimetric spectrometers.

The CIE recommends that this ideal standard of re? The following paragraphs incorporate such a statement.

In order to avoid implying unnecessary restrictions on instrumentation that can be used, when referencing this practice one should except in those cases of? Other standards calibrated to the perfect re?

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