PN-PWT powder whiteness meter Introduction: The PN-PWT powder whiteness meter is used to determine the ISO brightness of the powdered object (ISO Brightness), and for the fluorescent whitened sample, the fluorescence whitening degree caused by the reflection of the fluorescent substance can also be measured. It is widely used in various powder samples such as kaolin, calcium carbonate, talc, barite, activated clay, barium sulfate, magnesium oxide, flour and cement. Paper, paper products, paper industry, textiles, printing and dyeing, plastics, ceramics, enamel, building materials, paints, chemicals, food, salt, sugar and other production and commodity inspection departments that need to measure whiteness. This instrument meets the following standards: GB/T 19281 "Calcium carbonate analysis method" GB/T 23774 "General method for determination of whiteness of inorganic chemical products" Features: 1. The appearance of the instrument is novel and compact, and the advanced circuit design effectively ensures the accuracy and stability of the measured data. 2. The instrument has power-off protection, and the calibration data will not be lost after power-off. 3. This instrument is equipped with standard RS232 interface, which can communicate with microcomputer software. 4. Simulate D65 illuminator illumination. 5. CIE 1964 complementary color system and CIE 1976 (L*a*b*) color space color difference formula. 6. Observe the geometric conditions using d/o illumination. 7. The diameter of the diffusing ball is φ150mm, the diameter of the test hole is φ30mm, and a light absorber is provided to eliminate the influence of the specular reflected light of the sample. 8. The results can be measured multiple times and the arithmetic mean can be obtained. Technical features: Power source: AC110/220V 2A 50Hz; Accuracy: △R457≤0.5, △Y≤1.0; Resolution: 0.1; Measuring range: (1 ~ 160)%; Integral: 150mm diameter, test hole diameter 30mm, analog D65 illumination; Specimen size: The test plane is not less than Φ30mm and the thickness is not more than 40mm; Man-machine interface: 128×64 dot matrix LCD screen (Chinese and English menu) / 6-digit LED digital tube display (optional); Working environment: indoor temperature (20 ± 10) °C; relative humidity < 85%; Dimensions: (370 × 260 × 430) mm (length × width × height); Weight: approx. 11.5 kg.
Introduction: The PN-PWT powder whiteness meter is used to determine the ISO brightness of the powdered object (ISO Brightness), and for the fluorescent whitened sample, the fluorescence whitening degree caused by the reflection of the fluorescent substance can also be measured. It is widely used in various powder samples such as kaolin, calcium carbonate, talc, barite, activated clay, barium sulfate, magnesium oxide, flour and cement. Paper, paper products, paper industry, textiles, printing and dyeing, plastics, ceramics, enamel, building materials, paints, chemicals, food, salt, sugar and other production and commodity inspection departments that need to measure whiteness. This instrument meets the following standards: GB/T 19281 "Calcium carbonate analysis method" GB/T 23774 "General method for determination of whiteness of inorganic chemical products"
