本文论述了制冷机性能检测仪的设计 ,提出了检测低温流体流量的新方法。通过采用单片机 ,设计相应的低温计量容器、选择应变式压力传感器、制作硬件补偿电器 ,以产量计算公式为编程依据 ,实现了液空、液氮产量和机油压力测量的智能化 ,有利于系统测量准确度的提高。 This article discusses the design of the chiller performance tester and proposes a new method to detect the flow of cryogenic fluid. Through the use of single-chip microcomputer, the design of the corresponding low-temperature measuring container, the selection of strain-type pressure sensor, the production of hardware compensation for electrical output calculation formula for the programming basis, to achieve airspace, liquid nitrogen production and oil pressure measurement intelligence, is conducive to system measurement Accuracy improvement.