目 录
1 范围··············，······。。················..........................·，，···········…… (1)
2 引用文献·····························，······················································…… (1)
3 概述·····································，······························，·····················…… (1)
4 计量性能要求······························，················‘··················，···，·······…… (1)
4.1水平线性误差，·，···············，··，····································，，···········…… (1)
4.2 衰减器技术要求·············，··，·······································，，···········…… (l)
4.3 垂直线性误差·，·········································································…… (1)
4.4 动态范围·····························，···················································…… (1)
4.5 电噪声电平·...................................................................................(1)
4.6 最大使用灵敏度·····································，············，，，，···‘········…… (1)
4.7 探伤灵敏度余量················，···················，·，··································一 (1)
4.8 扫描范围········，········································································…… (2)
4.9 分辨力···················································································…… (2)
5 通用技术要求··，··，·..................··································，············…… (2)
5.1 外观 ···，·，，····，··‘····。··，·，，，·，，······························，···，·，·············…… (2)
5.2 铭牌、标志和使用说明书······。，···················，·····················，·········…… (2)
6 计量器具控制················。····················。········································…… (2)
6.1 检定条件···············································································…… (2)
6.2 检定项目·....................................................··························…… (3)
6.3 检定方法········，·······································································…… (3)
6.4 检定结果的处理······························································‘·········……(8
6.5 检定周期················································································…… (8)
附录A 超声探伤仪检定证书内页格式 ··································，············…… (9)
附录B 超声探伤仪检定结果通知书内页格式 ，·············‘··，，··，，·，···········…… (10)
附录C 检定不确定度评定实例 ···，····················，·······························…… (11)
超声探伤仪检定规程
范围
本规程适用于通用 A型脉冲反射式超声探伤仪的首次检定、后续检定和使用中检
验
2 引用文献
GB/T 12604.1-1990无损检测术语 超声检测
GB/T 18694-2002无损检测 超声检验 探头及其声场的表征
GB/T 18852-2002无损检测 测量接触探头声速特性的参考试块和方法
JJF 1059-1999《测量不确定度评定与表示》
使用本规程时，应注意使用上述引用文献的现行有效版本。
3 概 述
超声探伤是目前广泛使用的无损检测方法之一。
超声探伤仪主要由同步、扫描、发射、接收放大、电源等电路部分及显示屏组成，
可设延时、报警、深度补偿、标记、跟踪及记录等单元。与超声探头配套，广泛用于锅
炉、高压容器、船舶、航空航天、铁路、桥梁建筑、化工机械、冶金、原材料等非破坏
J性检 测。
4 计A性能要求
4.1 水平线性误差
不大于2%.
4.2 衰减器技术要求
4.2.1 衰减器总衰减量应不小于60dBo
4.2.2 衰减器衰减误差:在超声探伤仪规定的工作频率范围内，衰减器每12dB的误差
不超过t 1dBo
4.3 垂直线性误差
不大于6%o
4.4 动态范围
不小于26dBo
4.5 电噪声电平
不大于垂直满刻度的20%，且剩余增益大于60dB.
4.6 最大使用灵敏度
不大于400y V o
4.7 探伤灵敏度余量
