YB-15/25混凝土手持式应变仪 混凝土应变仪 混凝土手持应变仪
mso-hansi-font-family:"Times New Roman"">一、适用范围:
YB-15/25 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">混凝土手持式应变仪适用于测量各种建筑结构在长时间过程中的变形,无论是构件制作过程中变形的测量,还是结构在试验过程中变形的观察,均可采用本仪器。它具有结构简单、轻便、量程大、不受环境变化的影响,携带方便,特别适用于野外和现场作结构变形的测试,是科研、设计、施工部门和试验室做实验研究和工程测试的首选设备。
mso-hansi-font-family:"Times New Roman"">二、混凝土手持式应变仪技术参数:
1 mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、基距:250mm
2 mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、位移计量程:±5mm
3 mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、最小刻度值:40 mso-hansi-font-family:"Times New Roman"">με
4 mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、标准针距尺线膨胀系数α:1.5 mso-hansi-font-family:"Times New Roman"">×10-6/ "Times New Roman"">℃
5 mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、外形尺寸(长×宽×高):280 mso-hansi-font-family:"Times New Roman"">×71 "Times New Roman"">×75mm
6 mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、重量:约0.8kg
mso-hansi-font-family:"Times New Roman"">三、工作原理:
mso-hansi-font-family:"Times New Roman"">手持式应变仪是一种机械式应变测量仪,每台仪器有一个标准针距尺,采用精密低膨胀合金制成,器线膨胀系数a mso-hansi-font-family:"Times New Roman"">为1.5 "Times New Roman"">×10 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">℃,所以当环境温度变化较大时,针距长度可以认为是不变化的,每次测量前,都必须在标准针距尺上标读,然后再在试物上测读,比较两者之间的差数,即为所求变形量。
mso-hansi-font-family:"Times New Roman"">应变值的计算:计算公式以规范为准。