腾达试验仪器厂：

　　一、产品简介：

　　数显白度仪适用于白色和近白色物体或粉末表面的白度测量。可以准确地得出与视感度相一致的白度值。对于纸张的不透明度可以准确测量。本仪器可以广泛应用于纺织印染、油漆涂料、化工建材、纸张纸板、塑料制品、白色水泥、陶瓷、搪瓷、瓷土、滑石粉、淀粉、面粉、食盐、洗涤剂、化妆品等物体的白度测量。

　　Product introduction:

　　Digital whiteness meter is suitable for whiteness measurement of white and near-white objects or powder surfaces.The whiteness value can be accurately obtained in accordance with the visual sensitivity.The opacity of the paper can be accurately measured.This instrument can be widely used in whiteness measurement of textile printing and dyeing,paint coating,chemical building materials,paper and cardboard,plastic products,white cement,ceramics,enamel,porcelain clay,talcum powder,starch,flour,salt,detergent,cosmetics and other objects.

　　二、工作原理：

　　★仪器利用光电转换原理，采用模数转换电路，将测量样品表面反射的辐亮度能量值，经信号放大、A/D转换，数据处理，A后显示出相应的白度值。

　　★仪器由光源、光学系统、探测系统、数据处理与显示系统等构成，总体白度值为蓝光度R457。定仪光谱漫反射击比均为1的理想表面的白度为100，光谱漫反射击比均为零的黑表面白度为0。

　　★本仪器完全按照国际照明委（CIE）规定的标准光源及照测条件而设计，通过严格检测、调试，并执行于企业标准Q/TDKY02-2004，可适用于GB2913、GB5950、GB8940.1、GB12097、GB13025.2等**标准。

　　Second,the working principle:

　　★The instrument uses the principle of photoelectric conversion and adopts analog-to-digital conversion circuit to measure the radiance energy value reflected from the sample surface.After signal amplification,A/D conversion and data processing,the corresponding whiteness value is displayed after A.

　　★The instrument is composed of light source,optical system,detection system,data processing and display system,etc.The overall whiteness value is blueness R457.The whiteness of an ideal surface with a spectroscopic diffuse reflectance ratio of 1 is 100,and the whiteness of a black surface with a spectral diffuse reflectance ratio of zero is 0.

　　★This instrument is completely designed according to the standard light source and inspection conditions stipulated by the International Commission for Illumination(CIE).It has passed strict testing and debugging and is implemented in the enterprise standard Q/TDKY02-2004.It can be applied to GB2913,GB5950,GB8940.1,GB12097,GB13025.2 and other standards.

　　三、技术参数:

　　★测量范围:0-1999%

　　★显示方式:数字显示

　　★分辨率:0-1

　　★测量孔径:Φ30㎜

　　★照测条件:45℃

　　★测量方式:R457蓝光白度

　　★仪器光源:6V/5W卤素灯

　　★零点漂移:≤0.2

　　★示值漂移:≤0.3

　　★电压被动稳定性:0.1

　　★测量重复性:≤0.3

　　★供电电源:220V±20%

　　★功耗:30W

　　★外型尺寸:340×270×280mm

　　Third,the technical parameters:

　　★Measuring range:0-1999%

　　★Display mode:Digital display

　　★Resolution:0-1

　　★Measuring aperture:Φ30㎜

　　★Inspection conditions:45℃

　　★Measurement method:R457 blue light whiteness

　　★Instrument light source:6V/5W halogen lamp

　　Zero drift:≤0.2

　　★Indication drift:≤0.3

　　★Passive stability of voltage:0.1

　　Measurement repeatability:≤0.3

　　★Power supply:220V±20%

　　★Power consumption:30W

　　★Dimensions:340×270×280mm

　　三、仪器特点：

　　★用CAD电脑辅助设计，使仪器外形更合理更好。

　　★采用高效率，低损耗开关电源，使可靠性更高。

　　★采用优质进口元器件，使工作更稳定，使用寿命更长。

　　★采用简洁的光路设计，使用、维护更简单。

　　★采用经修正的滤色系统，可以定量反映荧光增白后的白度值。

　　★采用合理的试样座与活动平台设计，可以有效地避免测量孔口漏光现象。

　　★采用简单的操作，可以准确的测量纸张的不透明度。

　　★采用**标定白板来传递校正值，使测量值更准确。

　　Fourth,the characteristics of the instrument:

　　★Use CAD computer-aided design to make the appearance of the instrument more reasonable and better.

　　★High efficiency and low loss switching power supply are used to make the reliability higher.

　　★The use of high-quality imported components makes the work more stable and the service life longer.

　　★Simple light path design makes it easier to use and maintain.

　　★Adopting a modified color filter system,it can quantitatively reflect the whiteness value after fluorescent whitening.

　　★The reasonable design of the sample holder and movable platform can effectively avoid the light leakage phenomenon of the measuring orifice.

　　★With simple operation,you can accurately measure the opacity of the paper.

　　★Use**calibration whiteboard to transmit the correction value to make the measurement value more accurate.