JJF(黔) 62-2022 电子厚度仪校准规范

贵州省市场监督管理局发布贵州省地方计量技术规范JJF（黔）62-2022电子厚度仪校准规范CalibrationSpecificationforElectronicThicknessGauge20XX-XX-XX发布20XX-XX-XX实施JJF(黔)62—2022电子厚度仪校准规范CalibrationSpecificationforElectronicThicknessGauge归口单位：遵义市市场监督管理局主要起草单位：遵义市产品质量检验检测院参加起草单位：贵州省产品质量检验检测院中烟工业有限责任公司遵义卷烟厂本规范委托遵义市产品质量检验检测院负责解释JJF（黔）62—2022JJF(黔)62—2022本规范主要起草人：程宏（遵义市产品质量检验检测院）李朴（遵义市产品质量检验检测院）王霑（遵义市产品质量检验检测院）郭庆华（贵州省产品质量检验检测院）参加起草人：谢松（贵州中烟工业有限责任公司遵义卷烟厂）龚文龙（遵义市产品质量检验检测院）朱丽（遵义市产品质量检验检测院）JJF(黔)62—2022I目录引言·······································································································································（II）1范围···································································································································（1）2引用文件···························································································································（1）3概述···································································································································（1）4计量特性···························································································································（1）4.1测量面的几何尺寸·······································································································（1）4.2测量面的粗糙度···········································································································（2）4.3测量力···························································································································（2）4.4示值误差和示值重复性·······························································································（2）5校准条件···························································································································（3）5.1环境条件·······················································································································（3）5.2校准用计量器具···········································································································（3）6校准项目和校准方法·······································································································（3）6.1校准项目·······················································································································（3）6.2校准方法·······················································································································（4）7校准结果表达与处理·······································································································（6）8复校时间间隔···················································································································（7）附录A电子厚度仪示值误差校准结果的不确定度评定示例··········································（8）附录B校准原始记录参考格式························································································（12）附录C校准证书内页参考格式························································································（13）JJF(黔)62—2022II引言本规范依据JJF1071-2010《国家计量校准规范编写规则》、JJF1001-2011《通用计量术语及定义》、JJF1059.1-2012《测量不确定度评定与表示》，并参考了GB/T6672-2001《塑料薄膜和薄片厚度测定机械测量法》、GB/T451.3-2002《纸和纸板厚度的测定》进行编制。JJF(黔)62—20221电子厚度仪校准规范1范围本规范适用于用电驱动测头运动以接触式测量物体厚度的电子厚度仪的校准。2引用文件本规范引用了下列文件：GB/T451.3-2002纸和纸板厚度的测定GB/T6672-2001塑料薄膜和薄片厚度测定机械测量法凡是注日期的引用文件，仅注日期的版本适用于本规范；凡是不注日期的引用文件，其最新版本（包括所有的修改单）适用于本规范。3概述电子厚度仪是用于接触式测量物体厚度的计量器具，具有测量精度高、自动测量等特点，广泛应用于纸张、纸板、塑料薄膜、无纺布、纺织品等厚度测量领域。电子厚度仪主要是通过测杆位移，接触被测物表面，根据测量被测物时测杆位移量转换成电信号，通过显示装置将被测厚度显示出来，主要组成部分包括基座、光栅尺（或电感传感器）、测杆、测头、电机、显示和控制装置等。其典型结构如图1所示。1、基座；2、测杆；3、测头；4、显示和控制装置。图1电子厚度仪典型结构4计量特性4.1测量面的几何尺寸4.1.1用于塑料薄膜和薄片厚度测定的，测量面的几何尺寸应不超过表1的规定。JJF(黔)62—20222表1用于塑料薄膜和薄片厚度测定的测量面几何尺寸测头形式测量面直径测量面曲率半径两测量面的平行度平面/平面2.5mm～10mm/≤5μm凸面/平面≥5mm15mm～50mm/4.1.2用于纸和纸板厚度测定，其中一个测量面的直径应为16.0mm±0.5mm，另一个测量面的直径应大于16.0mm，两测量面的平行度应不超过表2的规定。表2用于纸和纸板厚度测定的测量面平行度测量范围两测量面的平行度L≤0.5mm≤5μmL＞0.5mm≤1%4.2测量面的表面粗糙度电子厚度仪测量面的表面粗糙度应不超过表3的规定。表3测量面的表面粗糙度分辨力测量面的表面粗糙度Ra0.1mm0.4μm0.01mm、0.002mm、0.001mm0.2μm4.3测量力用于塑料薄膜和薄片厚度测定的测量力应不超过表4的规定，用于纸和纸板厚度测定的测量力应不超过20N±2N。表4用于塑料薄膜和薄片厚度测定的测量力测头形式测量力平面/平面0.5N～1.0N凸面/平面0.1N～0.5N4.4示值误差和示值重复性用于塑料薄膜和薄片厚度测定的示值误差和示值重复性应不超过表4的规定；用于纸和纸板厚度测定的示值误差和示值重复性应不超过表5的规定。JJF(黔)62—20223表5用于塑料薄膜和薄片厚度测定的示值误差和示值重复性测量范围L示值误差示值重复性L≤100μm±1μm1μm100μm＜L≤250μm±2μm2μmL＞250μm±3μm3μm表6用于纸和纸板厚度测定的示值误差和示值重复性测量范围L两测量面的平行度示值误差示值重复性L≤0.5mm≤5μm±2.5μm±2.5μmL＞0.5mm≤1%±0.5%±0.5%注：以上技术指标要求不用于合格性判定，仅供参考。5校准条件5.1环境条件校准环境温度（20±5）℃，相对湿度≤80%。5.2校准用计量器具校准用计量器具见表7，也可以采用满足测量不确定要求的其他测量标准及设备。表7校准用计量器具序号计量器具名称计量性能1卡尺MPE：±0.03mm2半径样板MPE：±0.020mm～±0.1mm3表面粗糙度样块MPE：＋12%～－17%4测力仪MPE：不低于±1%5标准厚度片、量块不确定度不大于被校电子厚度仪最大允许误差的1/36校准项目和校准方法6.1校准项目校准项目见表8。JJF(黔)62—20224表8校准项目序号校准项目1平面测头测量面的直径2凸面测量面的曲率半径3测头测量面的表面粗糙度4测量力5上、下测头测量面平行度6示值误差7示值重复性注：测量面为凸面的电子厚度仪，不进行测量面的直径和两测量面平行度的校准。6.2校准方法6.2.1校准前准备6.2.1.1校准前应先检查电子厚度仪，确定无影响计量特性因素后再进行校准。6.2.1.2校准前应将标准厚度片或量块与电子厚度仪在室内平衡温度，平衡温度时间不低于3h。6.2.1.3校准前根据说明书规定的时间对电子厚度仪开机预热。没有规定的，预热时间不低于1h。6.2.2平面测头测量面的直径用卡尺直接测量电子厚度仪平面测头的测量面直径，测量时应在如图2所示的相互垂直的两个方向上进行，取两个方向直径测量结果的平均值作为该测量面的直径校准结果。图2测量面直径测量位置示意图6.2.3凸面测量面的曲率半径用半径样板以光隙法测量凸面测头测量面的曲率半径。6.2.4上、下测头测量面的平行度选择电子厚度仪测量范围内任意尺寸单个的标准厚度片或量块，以其同一部位放入图JJF(黔)62—202253所示测量面间的4个位置上，启动电子厚度仪进行测量，每次测量前均应对