本文作者最近研制成测量锅炉烟气含氧浓度的一种新型氧量变送显示仪。由于该仪表采用了单晶片微型计算机(简称单片机)并在线路设计中采取了一些针对性措施,因此使它具有体积小、成本低、精度高,特别是适用温度范围广、一表多用等优点。本文摘要地介绍了该仪表的工作原理、单片机的程序框图及研制、使用情况。 The authors recently developed a new type of oxygen transmission indicator that measures the oxygen concentration of boiler flue gas. As the instrument uses a single-chip microcomputer (referred to as single-chip) and in the circuit design to take some targeted measures, so it has a small size, low cost, high accuracy, especially for a wide temperature range, a multi-purpose table and so on . This article briefly introduces the working principle of the instrument, the microcontroller block diagram and development, use.