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一、前言历来应变仪的检定都是采用交流电阻式分压器作为标准器件,这种标准比率器件在国内已有“应变模拟仪”和“应变校正器”等产品,这类产品的优点是使用简单,但在结构上是比较落后的,尤其是它的稳定度和准确度都很差,以往这类标准器件是按照中国计量科学研究院电磁室的标准八位感应分压器来标定,然后再用它来检定产品。这样做法,不仅检定的层次多,而且在检定过程中,常常由于不稳定,而很难达到保证应变量的0.1%的要求。因此我们革新了应变仪的检定方法,采用感应分压器作为标准比率器件,针对应变仪的特殊性,采用适当的技术措施,达到了直直检定应变仪的目的,这样一来不仅减少了检定层次,免除了周期检
First, the preface Always strain gauges are the use of AC resistive voltage divider as a standard device, this standard ratio device in the country have “strain simulator” and “strain correction” and other products, the advantages of such products is Simple to use, but the structure is relatively backward, in particular, its stability and accuracy are poor, in the past this type of standard device in accordance with the China Institute of Metrology Electromagnetic Standard Hall sensor to calibrate the eight, Then use it to test the product. In this way, not only the level of verification is large but also the requirement of guaranteeing 0.1% of the variance of the verification variable is often difficult to achieve during the verification process because of instability. Therefore, we innovate the verification method of strain gauges, and use inductive voltage divider as the standard ratio device. In view of the particularity of the strain gauge, we adopt the appropriate technical measures to achieve the purpose of straightening the strain gauge. This not only reduces the verification Level, eliminating the cycle of seizures