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无损检测仪器 携带式工业X射线探伤机 Non-destructive testing instruments— Portable industrial X-ray radiographic equipment ICS 19.100 CCS N 78 中华人民共和国国家标准 GB/T 26838—2024 代替 GB/T 26838—2011 2024-08-2 3发布 2025-03-0 1实施 国家市场监督管理总局 国家标准化管理委员会 发 布 目 次 前言 ····································································································· Ⅲ 1 范围 ·································································································· 1 2 规范性引用文件 ······················································································ 1 3 术语和定义 ··························································································· 1 4 产品分类 ······························································································ 1 4.1 产品型号 ························································································· 1 4.2 主要技术参数 ···················································································· 2 5 技术要求 ······························································································ 2 5.1 使用条件 ························································································· 2 5.2 使用性能 ························································································· 2 5.3 稳定性 ··························································································· 4 5.4 辐射防护与安全 ················································································· 4 5.5 外观要求 ························································································· 4 6 试验方法 ······························································································ 4 6.1 试验条件 ························································································· 4 6.2 试验用主要仪器仪表和器具 ····································································· 5 6.3 穿透力测定 ······················································································ 5 6.4 相对灵敏度测定 ················································································· 7 6.5 射线辐射角和辐射场均匀性测定 ································································ 7 6.6 周向X射线机射线辐射角测定 ·································································· 9 6.7 计时器误差测定 ················································································· 9 6.8 管电压误差测定 ················································································· 9 6.9 管电压调节装置测定 ··········································································· 10 6.10 过电流保护测定 ··············································································· 10 6.11 过电压保护测定 ··············································································· 10 6.12 温度保护测定 ·················································································· 11 6.13 管电流欠毫安保护装置测定 ··································································· 11 6.14 连续工作稳定性能测定 ········································································ 11 6.15 变频、气绝缘主回路稳压电路输出电压波动测定 ············································· 11 6.16 漏射线所致周围剂量当量率测定 ······························································ 11 6.17 低压回路绝缘电阻测定 ········································································ 11 6.18 接地保护装置接地电阻测定 ··································································· 11 6.19 低压回路绝缘强度测定 ········································································ 11 6.20 高压回路绝缘强度测定 ········································································ 12 GB/T 26838—2024 Ⅰ 6.21 高压变压器次级对地绝缘强度测定 ·····························
GB-T 26838-2024 无损检测仪器 携带式工业X射线探伤机
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