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采用简单的计数方式设计了定时器和计数器，用单片机系统进行控制，实现了压电晶体化学传感器频率大小的测量和频差的计算，并且将差频通过Ｄ／Ａ转换器变换成电压信号，用以驱动记录仪。该仪器性能稳定、操作简便、价格低廉，已成功地用于二氧化硫和有机物蒸汽测定的压电石英晶体传感器的研制。
The timer and counter are designed by a simple counting method and controlled by a singlechip system to realize the measurement of the frequency of the piezoelectric crystal chemical sensor and the calculation of the frequency difference, and the difference frequency is transformed into a voltage signal by the D / A converter, Used to drive the recorder. The instrument performance is stable, easy to operate, low cost, has been successfully used for the determination of sulfur dioxide and organic vapor piezoelectric quartz crystal sensor development.