分析仪采用多项世界前沿的光电机和软件技术，能够长期无人值守地自动监测各种水体中的COD ，同时TR2311型铬法COD全自动在线分析仪提供了多路标准接口，可方便接入流量计，pH计等监测仪器，可实现远程遥控遥测。
测量原理
水样、重铬酸钾、硫酸银溶液（催化剂使直链脂肪族化合物氧化更充分）和浓硫酸的混合液在消解池中被加热到170℃，在此期间铬离子作为氧化剂从Ⅵ价被还原成Ⅲ价而改变了颜色，颜色的改变度与样品中有机化合物的含量成对应关系，仪器通过比色换算直接将样品的COD显示出来。
产品特点
消解时间可调，消解更充分，数据更准确； 消解比色一体化，结构简单，减少误差； 超长标定间隔（15天），减少磨损，延长使用寿命； 人性化设计，全流程可视； 试剂消耗量少，仪器运营(行)费用低； 进口部件，性能稳定、可靠，后期维护成本极低。
Equipment
TR2311 automated water CODCr line analyzer uses a combination of cutting-edge optical drive and software technology to automatically monitor various unattended water bodies’ CODCr over the long-term. The system also provides a multi-standard interface for easy access to the pH meter, monitoring equipments, which enables effective telemetry.
Principle
According to the national standard GB11914-1989 Water quality - Determination of COD - dichromate method.
Adding dichromate and silver to water samples under highly acidic conditions and high temperatures, which act as the catalyst, initiates digestion of organic matter in samples and Cr6 + is reduced to Cr3 +. By photoelectric colorimeter, measured reduce the amount of Cr6 +, the sample measured values of the measured sample and the standard calibration curve when compared with the samples, the value of CODCr.
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