白度測定機－機器機表--紙張檢測機器
產 品 簡 介
白度測定機，用於測定物體的白度，它廣泛應用於造紙、紡織、印染、塑料、陶瓷、搪瓷、糧食、建材、油漆、化工、鹽和其他需要測定特體白度的生產和商檢部門。機器還可以測定紙張的透明度、不透明度、光散射系數和吸收系數。
本機器符合GB3978-83：標準照明體和照明觀測條件。模擬D65照明體照明。采用d/o照明觀測幾何條件（ISO2469），漫射球直徑φ150mm，測試孔直徑有φ30mm和φ19mm兩種，設有光吸收器，消除瞭試樣鏡麵反射光的影響。R457白度光學系統的光譜功率分佈的峰值波長457nm，半高寬44nm；RY光學系統符合GB3979-83：物體色測量方法。
白度機的主 要 性 能 特 點
1. 測定ISO白度（ISO Brightness，即R457白度），對熒光增白的試樣，還可以測定其中熒光物質發射產生的熒光增白度。
2. 測定明度刺激值Y10。
3. 測定不透明度（Opacity）。
4. 測定透明度。
5. 測定光散射系數和吸收系數。
6. 可以多次測定並給出一系列測定結果的算術平均值。
7. 帶斷電保護，調零、調準和標準量值等數據，即使長期失電，亦保護數據不丟失。
白度機主 要 技 術 參 數
1. 測定並數字顯示白度，熒光（增白）白度，不透明度（%）等；
2. 零點漂移：≤0.1；
3. 示值漂移：≤0.1；
4. 示值誤差：≤0.5；
5. 重復性誤差：≤0.1；
6. 鏡麵反射誤差：≤0.1；
7. 試樣尺寸：測試平麵不小於φ30mm或φ19mm，試樣厚度不超過40mm.
8. 電源：～220V±10%，50Hz，0.3A；
9. 工作環境：溫度0～40℃，相對濕度不超過85%；
48B BRIGHTNESS TESTER
INTRODUCTION
The instrument is mainly used to test the whiteness of diversified objects such as paper and board, pulps and chemical fiber, textile, plastic, ceramic
, enamel, fecula, salt, white cerement, porcelain clay and French chalk, etc. It can also be used to test the optical performance of sheet materials, for example, opacit
y test.
APPLICATIONS
Paper, Board, Pulps, Chemical fiber, Textile, Plastic, Ceramic, Enamel, Fecula, Salt, White cerement, Porcelain clay and French chalk etc.
STANDARDS
Meets ISO 2469, ISO 2470, ISO 2471, GB/T 7933, GB/T7974, GB/T 8940.2, GB/T 1840, GB/T 2913, GB/T 13025.2,GB/T 1543, ISO 2471, GB/T 10339, GB/T 5950 Etc.
SPECIFICATIONS
1. This instrument complies with GB3978-83; Standard illuminator and illuminating--viewing
conditions.
2. Simulate D65 illuminator to illuminate. Adopt d/o illuminating--viewing geometrical coanditions. Diameter of the diffusion sphere is 150mm and diameter of the testing hole is 25mm.
3. Light absorber is provided to eliminate the effect of specular reflection. Peak wavelength of spectral power distribution of R457 whiteness optical system is 457nm and its half-width is 44nm.
4. Measure and display the whiteness, Fluorescent whiteness (whitening rate) and opacity (%) etc. digitally.
5. Indication error: 0.5%
6. Sample size: Test plate diameter should not be less than 30mm while sample thickness should not exceed 40mm.
7. Power supply: 160V-260V, 50Hz, 0.3A
8. Measure time: 3s
9. Working condition:Temp.0-40oC, relative humidity ＜85％.
10. Size and weight: L×W×H＝365×260×425mm, 11kg
FEATURES
1. Measure the Blue Reflectance Factor (R457) of samples. Blue Reflectance Factor is so called “Blue Whiteness” or “ISO Brightness”.
2. Analyze the sample to find out whether it contains any fluorescent brightener. If so, measure the fluorescent whiteness further, namely whitening rate.
3. Measure the opacity, transparency, light scattering coefficient and light absorbing coefficient.
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