内容简介
JJF（苏）248-2021电梯用钢丝绳弯曲疲劳试验机校准规范
Calibration Specification for Bending Fatigue Testing Machinesfor Steel Wire Ropes Used for Elevators
2022-3-1实施
2021-11-24发布
目录
引言 ........................................................................ 1
1 范围 ..................................................................... 2
2 引用文件 ................................................................. 2
3 术语和计量单位 ........................................................... 2
3.1 术语 ................................................................... 2
3.2 量的符号、单位与定义 ................................................... 2
4 概述 ..................................................................... 2
5 计量特性 ................................................................. 4
6 校准条件 ................................................................. 4
6.1 环境条件 ............................................................... 4
6.2 校准用计量器具 ......................................................... 4
7 校准项目和校准方法 ....................................................... 4
7.1 校准前检查 ............................................................. 4
7.2 试验力示值误差和示值重复性 ............................................. 5
7.3 张力设定点误差 ......................................................... 5
7.4 10min 张力变动性 ....................................................... 6
7.5 弯曲疲劳频率示值误差 ................................................... 6
7.6 包角误差 ............................................................... 6
8 校准结果表达 ............................................................. 7
9 复校时间间隔 ............................................................. 8
附录 A 电梯用钢丝绳弯曲疲劳试验机测量不确定度评定方法及实例 ................ 9
附录 B 校准原始记录格式 ................................................... 16
附录 C 校准证书内页格式 ................................................... 18