Equipment Overview: It is entirely in accordance with the requirements of the relevant national standards, industry standards and other international standards ISO 2469 requirements and our recent release of the design made. Compared with similar instruments 45 / O optical measurement system, with direction from the sample surface texture measuring the impact of the advantages of the reflection characteristics. Determination of light scattering coefficient and absorption coefficient of paper 张对光 main features: 1, the instrument of the spectrum condition, by strict integral filter matched together. 2, the instrument uses micro-computing technology to achieve automatic control and automatic processing of data, and an external printer. 3, with a back-up electrical equipment, for often the data is not lost due to power failure or shutdown. 4. The instrument uses a switching power supply with high efficiency, small size, light weight, strong anti-jamming capability, suitable for a wide range of power and so on. 5, instrument data can be set from the touch keyboard. 6, the instrument displays the measurement result of the measurement data directly from the LED display. 7, ISO whiteness was measured (i.e., blue R457 whiteness), for the fluorescent whitening of a sample can also be measured whiteness fluorescence emission of the fluorescence substance. 8, the transparency was measured (T) and the lightness stimulus object (V10). 9, measuring opacity (0). Standard: 1, in line with ISO2469 international standards d / o lighting observation geometry, integrating sphere diameter 150mm, test hole diameter 32mm, has a gloss specimen absorber to eliminate the impact of the specularly reflected light. 2, the relative spectral power distribution of the optical system R457: peak wavelength of 457 nm, a half-wave width of 44nm, the spectral power distribution of the optical system RY stimulation conditions in line Y10 CIE standard D65 / 100 3, the instrument accuracy according JJG512-87 "White meter, "a product of white meter technical requirements. 4, in line with the requirements of JJG (light) 48-90 "reflection photometer" under. Industry: The instrument can be widely used in the whiteness and other optical properties of paper, cardboard, pulp, silk, textiles, paint, cotton fiber, ceramic materials, clay clay, household chemicals, flour, starch, plastic raw materials and other objects of the Determination. Technical parameters: 1. Model ZL-9015A 2. Zero drift ≤0.2% 3. Indication drift ≤0.5% 4. Indication error ≤1.0% 5. Repeatability error ≤0.2% 6. Power 220V + 10%, 50Hz 7 . Dimensions 370mm × 190mm × 380mm 8. Weight 12Kg