Aesthetic design of the device allow user friendly operations. Numerous set of test data is displayed on screen during the live test. One can quickly conduct comparison tests. USB portal is available, the test results can be downloaded. Easy data managing facility for checking, removing, and printing data.
A Protective cover for safety of the device measuring aperture. Test reports can be printed automated. Files can be saved in pdf format after exporting. Do not wipe standards. Thepolished black glass high-gloss standard may be dabbed gentlywith a lint-free paper towel or other lint-free absorbentmaterial. Place the rinsed standards in a warm oven to dry.
Whenever a test for gloss requires the preparation of testspecimens, use the procedures given in Practice D Verify the instrument zero by placing a black cavity inthe specified position. Calibrate the instrument at the start and completion ofevery period of glossmeter operation, and during the operationat sufficiently frequent intervals to assure that the instrumentresponse is practically constant. To calibrate, adjust the instru-ment to read correctly the gloss of a highly polished standard,properly positioned and oriented, and then read the gloss of aworking standard in the mid-gloss range.
Never place standards face down on a surface that may be axtm or abrasive. Because the specimen and standard are generally quite similar optically, measured gloss values are little affected by polarization. A comparison is made of several geometrically different photometric scales for separating paint nishes for gloss.
The axis of the receptor shall be at the mirror reection of the axis of the incident beam. How do I choose a Gloss Meter? Gloss Meter for Curved Surfaces. In obtaining the visual gloss ratings, however, it is customary to compare the specular reectances of two specimens aastm similar surface refractive indices.
Also, Journal of Research, Nat. The gloss value for glass of any other refractive index asttm be computed from the Fresnel equation 5. Place the rinsed standards in a warm oven to dry.
Since specular reection is, in general, spectrally nonselective, spectral corrections need to be applied only to highly chromatic, low-gloss specimens upon agreement of users of this test method. Summary of Test Method 4. Since the instrumental ratings are affected more than the visual ratings by changes in surface refractive index, non-agreement between visual and instrumental gloss ratings can occur when high gloss specimen surfaces differing in refractive index are compared.
The following are technically similar to ISO The tolerances are chosen so that errors e the source and receptor apertures do not produce an error of more than one gloss unit at any point on the scale d— You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
NOTE 3—Polished black glass has been reported to change in refractive index with time largely due to chemical contamination Compares visual difference ratings with instrumental measurements of specular gloss, distinctness of image gloss, and haze for series of black, gray, and white painted specimens. The gloss is significant for product and process development as well as for performance testing. The proper angle, calibration, and inspection according to standard supplied with the gloss meter are important before placing the measuring device on the test sample to take a reading.
The Gloss Meter Tri-angle is used to perform the gloss measurement of various types of materials such as paint, paper, ceramics, plastics, and metals.
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