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2011版《电线电缆生产许可证实施细则》中规定线缆企业生产架空绞线需配备蝶式引伸仪用做含有钢、铝包钢线产品变形的检测设备,使用蝶式引伸仪配合万能试验机测量铝杆、铜杆等金属材料的变形,来测定其某些力学性能(如弹性模量、屈服强度等)。蝶式引伸仪是一种机械式引伸计,目前引伸计检定规程仅适用于电子式引伸计,对于蝶式引伸仪这种传统的引伸计尚需制定相应的校准方法,以保证其测量结
2011 version of the “wire and cable production license,” the provisions of the provisions of the overhead cable production line companies need to be equipped with butterfly extensometer used as steel, aluminum clad steel wire products deformation testing equipment, the use of butterfly extensometer with universal testing machine Measurement of aluminum rod, copper rod and other metal deformation, to determine some of its mechanical properties (such as elastic modulus, yield strength, etc.). The butterfly extensometer is a mechanical extensometer, the current extensometer verification protocol applies only to the electronic extensometer, the extensometer for the butterfly extension of the traditional extensometer still need to develop appropriate calibration methods to ensure that the measurement junction