中国计量科学研究院建立γ射线照射量基准的研究工作始于1959年，是我国电离辐射计量创始阶段的重要组成部分。现行基准装置设计制造于60年代末70年代初。1975年批准为国家计量基准，负责全国量值统一工作。该基准包括：石墨基准电离室、电离电流测量装置、γ辐射装置及量传检 The research work of China Institute of Metrology to establish the baseline of γ-ray exposure started in 1959 and is an important part of the founding phase of ionizing radiation measurement in China. The current reference device design and manufacture in the late 60s early 70s. Approved in 1975 as the national measurement standards, responsible for the national unity of value. The benchmarks include: graphite reference ionization chamber, ionization current measurement device, gamma radiation device and volume inspection