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DD-200型电导式浓硝酸浓度计是我厂在南京化肥厂和北京化工七厂的协助下,于1974年试制成功的。仪器结构简单,性能稳定可靠,维护工作量少,很受用户欢迎。目前,我国生产的浓度在98%以上的浓硝酸是一种重要的产品。在生产中,把硝酸浓度严格控制在规定的指标内,可以减少浪费,提高质量,增加产量。但是,目前不少工厂采用人工取样的化学分析法或比重法进行测定,操作时间长,不能及时指导生产,常使生产流程中浓度波动较大,影响产品质量和产量,并且
DD-200-type conductivity of concentrated nitric acid concentration meter is my factory in Nanjing Chemical Fertilizer Plant and the Beijing Chemical Industry Factory VII with the assistance of trial production in 1974. Instrument structure is simple, stable and reliable performance, less maintenance, very popular with users. At present, concentrated nitric acid with a concentration above 98% produced in China is an important product. In production, the nitric acid concentration strictly controlled within the specified targets, can reduce waste, improve quality and increase production. However, at present, many factories use artificially sampled chemical analysis method or specific gravity method to measure. The operation time is long and can not guide the production in time. The concentration in the production process often fluctuates greatly, which affects product quality and output, and