For rapid colour grading within predetermined colour limits, the glass standards can be set to the two limiting colours, making it easy to see if the sample is within tolerance. The tungsten halogen light source is colour corrected to CIE standard illuminant C, which guarantees constant lighting conditions for colour grading, day or night and irrespective of ambient lighting. Principle Three cylindrical glass sample jars with an internal diameter of 33mm are housed in the 3-section sample container; the central of Operation jar is half filled with the sample and the outer ones are filled with distilled water. The sample is viewed through a prism which brings the sample and the standards into adjoining fields of view.
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During the usage of the measuring instrument, the sample of petroleum is injected to the colorimetric tube. Then the chromaticity and the color number are determined after the sample is compared with the standard color sheet. The 26th hole is blank.
The color is filtered after the source light goes through the milky glass sheet and sunlight-filtering glass sheet.
The features of the spectrum of the gotten standard light are similar to that of the north light. Two parallel beams of light are composed after the standard light goes through the plane reflecting mirror and prisma.
These two beams of light share the same size and shape, and simultaneously and equally illuminate the colored glass sheet of the standard color disk and the sample in the colorimetric tube. Rotate the rotating-hand-wheel of the standard color disk on the right side of the instrument so that the sample fluid can choose the right corresponding color in the experiment of color comparison.
Colorimetric tube is put inside through the position of the small lid at the top of the instrument. Observation ocular lens consists of convex mirror and concave mirror. Optical ocular lens has the capabilities of adjusting the beam of light and focusing. It means we are the supplier of the Chinese Government. And our products spread throughout the whole China. Recommendation Do you want to get more information?
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ASTM Colour (ASTM D1500, ASTM D1524, ASTM D6045, ISO 2049)
Petroleum Transformer Oil ASTM D1500 Colorimeter