JJG 134-2003

3 概述··························································································⋯⋯(1) 4 计量性能要求··············································································⋯⋯(1) 4.1 参考速度灵敏度········································································⋯⋯(1) 4.2 频率响应·················································································⋯⋯(1) 4.3 幅值线性度··············································································⋯⋯(1) 4.4 横向灵敏度比···········································································⋯⋯(1) 4.5 温度响应·················································································⋯⋯(1) 4.6 动态范围·················································································⋯⋯C2) 4.7 最大可承受的加速度··································································⋯⋯(2) 4.8 绝缘电阻·················································································⋯⋯(2) 4.9 输出电阻·················································································⋯⋯(2) 5 通用技术要求··············································································⋯⋯(2) 5.1 外观及附件··············································································⋯⋯(2) 5.2 生产厂应给出的技术指标···············.···········································⋯⋯(2) 5.3 传感器环境适应性·····································································⋯⋯(2) 6 计量器具控制··············································································⋯⋯(2) 6.1 定型鉴定或样机试验··································································⋯⋯(2) 6.2 首次检定、后续检定和使用中的检验·············································⋯⋯(3) 6.3 检定结果处理···········································································⋯⋯(5) 6.4 检定周期·················································································⋯⋯(5) 附录A 定型鉴定、样机试验方法·························································⋯⋯(6) 附录B 检定证书内页格式··································································⋯⋯f ig) 附录C 检定结果通知书内页格式·························································⋯⋯(9) JJG 134- 2003 磁电式速度传感器检定规程范围本规程适用于(0.5一5000) Hz频率范围内的惯性型磁电式速度传感器(以下简称传感器)的定型鉴定、样机试验、首次检定、后续检定和使用中的检验。 2 引用文献 GB/T 2298-1991 机械振动与冲击术语 GB/T 13866-1992 振动与冲击测量描述惯性式传感器特性的规定 GB/T 13823.1-1993 振动与冲击传感器的校准方法基本概念 GB/T 13823.3-1992 振动与冲击传感器的校准方法正弦激励比较法校准(二次校准) GBJT 13823.8-1994 振动与冲击传感器的校准方法横向振动灵敏度测试 GB/T 13823.16-1995 振动与冲击传感器的校准方法温度响应比较测试法 JJG 2054-1990 振动计量器具计量检定系统 JJF 1015-2002 计量器具型式评价和型式批准通用规范 JJF 1016-2002 计量器具型式评价大纲编写导则 JJG 676-2000 工作测振仪国家计量检定规程 JB/T 9517-1999 磁电式速度传感器 JB/T 9329-1999 仪器仪表运输、运输存储基本环境条件及试验方法使角本规程时,应注意使用上述引用文献的现行有效版本。 3 概述惯性型磁电式振动速度传感器主要用于机械振动测量,它是利用电磁感应原理将振动速度量转换成电压量输出。其结构主要由磁路系统、线圈、惯性质量、弹簧阻尼等部分组成。 4 计且性能要求 4.1 参考速度灵敏度:参考速度灵敏度不确定度为3% (k二2) 4.2 频率响应:频率响应为土10% 4.3 幅值线性度:幅值线性度为t5% 4.4 横向灵敏度比:最大横向灵敏度比为10% 4.5 温度响应生产厂应给出传感器在允许使用的温度范围内速度灵敏度随温度变化的典型温度响 1 JJG 134- 2003 应偏差。 4.6 动态范围生产厂应给出传感器动态范围参数,即频率范围、最大可测的振动位移,并必须给出以实际使用意义的频率、加速度、速度、位移为坐标所确定的动态范围。 4.7 最大可承受的加速度生产厂应给出传感器最大可承受的加速度。 4.8 绝缘电阻传感器绝缘电阻不小于1 MSZ(接地的除外)。 4.9 输出电阻传感器应给出输出电阻值。 } . } 通用技术要求 5.l 外观及附件 5.1.1 传感器产品的外壳上应有铭牌,标明产品名称、规格型号、制造厂、出厂日期及编号,并应标有近雪标志及其编号。 5.1.2 新制造的传感器外壳表面的金属镀层或其他化学处理层不应有划痕和脱落现象。 5.1.3 传感器的输出导线及各连接部件应配套齐全、完好、可靠。 5.2 生产厂应给出的技术指标传感器生产厂应给出传感器的固有频率、相频特性、阻尼系数、安装角度及允差, 并应给出传感器的输出极性、重量、外形尺寸及安装方式。 5.3 传感器环境适应性 5.3.1 传感器工作的环境条件: 温度:在生产厂规定的温度范围内使用。 湿度:簇85%RHo 周围无强磁场、无腐蚀性气液体。 5.3.2 环境适应性试验要求传感器环境试验应符合JB/T 9329-1999《仪器仪表运输、运输存储基本环境条件及试验方法》第3条中湿度试验和跌落试验的要求。 湿度试验:95 % RH (25 ` j C ); 跌落试验:100mm高度自由跌落。 6 计f器具控制计量器具控制包括:定型鉴定或样机试验、首次检定、后续检定和使用中检验。 6.1 定型鉴定或样机试验 6.1.1 定型鉴定或样机试验应按JJF 1015-2002《计量器具型式评价和型式批准通用规范》和JJF 1016-2002《计量器具型式评价大纲编写导则》的有关要求进行。 6.1.2 定型鉴定或样机试验的项目见表to 6.1.3 定型鉴定和样机试验的方法见附录Aa JJG 134- 2003 6.2 首次检定、后续检定和使用中的检验 6.2.1 检定条件 6.2.1.1 环境条件 1)温度:(20土5 ) }C; 2)湿度:X85%RH; 3)电源电压波动量不应超过额定值10%; 4)检定现场应无强振源、强磁场的干扰及腐蚀性气液体。 6.2.1.2 检定用仪器设备 1)标准振动台:加速度波形失真度,5%,横向振动比X10%; 加速度幅值稳定度,0.5%,信噪比〕60dB ; 台面漏磁‘3mTo 2)标准加速度计套组: 参考灵敏度不确定度:160Hz或80Hz时,为0.5% (k二3); 在(20一1000) Hz频率范围时,为1% (k二3)0 3)交流数字电压表:测量不确定度为0.2% ( k二2)0 4)数字频率计:测量不确定度为0.05% ( k二2)0 5)横向灵敏度校准装置:加速度波形失真度}5%;横向振动比}1%0 6)温箱: 温度范围(一40一250)°C或(一70一400) }C ; 温度波动度}O.SgC;温度均匀度鉴2 9C a 7)高阻表: