说明：  PTX800流量积算仪是针对流量变送器送来的模拟电压信号或模拟电流信号定标后进行流量累积的，利用68HC705单片机作为控制器，其中包括开方运算、非线性修正、多种显示方式，配有图纸和线路板图文件。
(PTX800 Flow Totalizer is sent for the flow transmitter analog voltage signal or analog current signal, after calibration flow accumulation, using 68HC705 microcontroller as a controller, including the square root operations, non-linear correction, multiple display way, with drawings and circuit board diagram file.)