随着石油生产技术的进步及其复杂程度的提高 ,井场科学计量是十分必要的。常规的压力检测仪表不适合井场的安装应用条件 ,经常遭到坡坏 ,因而设计新型的井口压力检测仪有其实用价值。文章主要介绍用于井口压力检测的存储式数字压力检测仪的电路设计原理。叙述了整机原理构成、模数转换 (A/ D)的电路工作原理、单片机控制系统及存储电路和显示电路系统 With the advancement of petroleum production technology and the increase of its complexity, it is very necessary to conduct well-site scientific measurement. Conventional pressure measuring instruments are not suitable for well site installation and application conditions, often suffered slope damage, so the design of a new type of wellhead pressure detector has its practical value. The paper mainly introduces the circuit design principle of the storage type digital pressure detector used in the wellhead pressure testing. Describes the principle of the whole machine, A / D circuit working principle, single chip microcomputer control system and storage circuit and display circuit system