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购买激光粒度仪需要考察什么

购买激光粒度仪需要考察什么

编辑:admin   时间:2017-07-21
企业资讯

最近很多客户打来电话购买激光粒度仪,但是不知道需要考虑什么指标?山东耐克特小编今天就为广大客户先容一下。
Recently, many customers call to buy laser particle size tester, but do not know what indexes need to be considered? Shandong Nike special Xiaobian today for our customers to introduce.
如果你打算买一台高性价比激光粒度仪的话你要参考以下五点:
If you are going to buy a high performance price ratio laser particle sizer, you should refer to the following five points:
第一、测量范围:分为纳米级、亚微米级、微米级
First, measuring range: divided into nano, sub micron, micron level
第二、测试方法:干法和湿法
Second 、 test method: dry method and wet method
第三、测试原理:米氏散射和动态光散射
Third. Test principle: Mie scattering and dynamic light scattering
第四、激光器:一般分为半导体激光器和HE-NE气体激光器,半导体激光器优点使用前无需预热,使用寿命长,缺点是发光不稳定,光纤半导体光斑比氦氖激光器圆很多,某些厂家技术上做不好半导体激光器就一味地抹黑,气体激光器使用前应先预热,夏季在15分钟冬季在30分钟左右,需要几千伏的高压击穿,高压会干扰仪器的稳定性,对测试人员也可能造成伤害,同时氦氖激光器功率太低普遍在2mw左右。
Fourth, generally divided into: laser diode laser and HE-NE gas laser, semiconductor laser has the advantages of no preheating before use, long service life, light disadvantage is unstable, many round than spot fiber semiconductor He Ne laser technology, some manufacturers do not blindly semi conductor laser smear, preheating gas laser before use, in the summer of 15 minutes in 30 minutes or so, need thousands of volts of high voltage breakdown, high voltage stability will interfere with the instrument, the test personnel may also cause harm, at the same time He Ne laser is too low, generally around 2mw.
第五、探测器的数量,也叫测量通道,不同厂家的激光粒度仪探测器的环数也不一样,测量的精度也不一样,有些厂家会说探测器环数越多越好,实则不然。英国知名品牌马尔文主探测器只有区区33环,辅助探测器也只有12个,加起来才45通道。你能说他们探测精度不高?事实上主探测器面积大小是最主要的,山东耐克特粒度仪主探测器外环直径达到了125mm。Fifth, the number of detectors, also called measurement channels, ring number detector of laser particle analyzer from different manufacturers are not the same, the measurement accuracy is not the same, some manufacturers will say the detector ring number the more the better, but it is not. Malvin, the famous British brand, has only 33 rings, and only 12 auxiliary detectors, adding up to 45 channels. You can say that their detection accuracy is not high, in fact, the size of the main detector is the most important, Shandong Nike special particle detector, the outer diameter of the main detector reaches 125mm.

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