使用单片机的容量滴定法水分测定仪的研制

Development of a Karl Fisher capacitance titrimetric moisture meter based on single chip processor.

用卡尔·费休容量滴定法测定水分 ,滴定终点的捕捉正确与否决定着分析的精确度。KF-1B型水分测定仪采用单片机技术 ,具有近终点报警提示功能。当滴定接近终点时 ,报警器发出声光报警 ,提示操作者减缓滴定速度 ,避免因试剂过量而影响测定的准确性。同时利用单片机的内部资源 ,自动计算出水分含量。该水分测定仪具有使用方便、功能强、体积小、可靠性高、价格低等一系列优点。

For moisture meters based on Karl Fisher capacitance titrimetry, the accuracy of measurement is dependent on capturing correct end point. A capacitance titrmetric moisture meter coupled with single chip technique has been developed. To avoid excess reagent affecting accuracy of measurement, the instrument can send out sound and light alarming signals when titration is approaching end point, warning the operator to slow down titrimetric speed. Water content can be calculated automatically. The instrument has merits of ease of use, small volume, high reliability and low cost.