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大约50年代初,日本开始生产目前所用的所谓工业仪表,那是一种配有电子管放大器和两相交流伺服电机的电子式记录仪,它由日本自行设计并投入实际使用。那时,投入市场的也有配气动 PID 调节器的记录式调节仪,这是二次世界大战以后,日本过程工业中所用的主要仪表系列。根据生产过程的要求和相应的技术水平,那时的仪表装置绝大多数用于检测,只有部分重要的过程变量才加以调节和记录。由于当时国内检测器型式陈旧,可靠性低(除温度测量外),不能满足整个生产过程的控制要求,所以从1955
About the beginning of the 1950s, Japan began producing the so-called industrial instruments used today, an electronic recorder equipped with a tube amplifier and a two-phase AC servo motor, designed and put into practical use by Japan. At that time, there was also a recording regulator fitted with a pneumatic PID regulator on the market, the main instrument series used in the Japanese process industry after World War II. According to the requirements of the production process and the corresponding technical level, when the vast majority of instrumentation devices for testing, only some of the important process variables to be adjusted and recorded. Due to the old type of detector at the time, low reliability (except temperature measurement), can not meet the control requirements of the entire production process, so from 1955