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便携式水质分析仪报价是多少

便携式水质分析仪报价是多少

浏览：41次 | 提问时间： 06-29 09:42

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傻傻嘚a在等你噯硪 06-29 09:43

便携式水质分析仪以电位分析、电导分析等理论为依据，并综合的运用了电化学传感器、集成电子与单片机技术，是水产养殖、环境保护、污水处理等领域进行水质分析的理想工具、是组建水分析化学实验室的理想选择。

鉲哇咿メo 06-29 09:52

几十块钱左右。质量还可以，工作原理水的pH值随着所溶解的物质的多少而定，因此pH值能灵敏地指示出水质的变化情况。pH值的变化对生物的繁殖和生存有很大影响，同时还严重影响活性污泥生化作用，即影响处理效果，污水的pH值一般控制在6.5～7之间。水在化学上是中性的，某些水分子自发地按照下式分解：H2O

假象温暖 06-29 09:59

H++OH-，即分解成氢离子和氢氧根离子。在中性溶液中，氢离子H+和氢氧根离子OH-的浓度都是10-7mol/l，pH值是氢离子浓度以10为底的对数的负数：pH

搞怪 06-29 10:08

-log，因此中性溶液的pH值等于7。如果有过量的氢离子，则pH值小于7，溶液呈酸性；反之，氢氧根离子过量，则溶液呈碱性。 pH值通常用电位法测量，通常用一个恒定电位的参比电极和测量电极组成一个原电池，原电池电动势的大小取决于氢离子的浓度，也取决于溶液的酸碱度。该厂采用了CPS11型pH传感器和CPM151型pH变送器。具体结构如图1所示，测量电极上有特殊的对pH反应灵敏的玻璃探头，它是由能导电、能渗透氢离子的特殊玻璃制成，具有测量精度高、抗干扰性好等特点。当玻璃探头和氢离子接触时，就产生电位。电位是通过悬吊在氯化银溶液中的银丝对照参比电极测到的。pH值不同，对应产生的电位也不一样，通过变送器将其转换成标准4～20mA输出。

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