全站仪加、乘常数检定精度的影响因素及对策分析

摘 要：在全站仪加、乘常数计量检定中，一般采用六段解析法，即用全站仪配合反射棱镜进行不少于21段基线组合段的距离测量，但由于基线场地、仪器本身、外界因素、观测者等诸多方面的原因，将综合影响检定精度，给加、乘常数检定值带入误差。文章对影响全站仪加、乘常数计量检定精度的诸多因素进行了分析，并提出一些应对措施以便提高检定精度，对测绘计量检定工作具有重要参考意义。

Research on Temperature Parameter Calibration of Active Medical Cold Boxes

Medical cold boxes are essential thermal insulation equipment in the process of storage and transportation of drugs, vaccines and blood. The temperature parameter plays an important role in drug quality and vaccine activity. Combined with the existing technical specifications, this paper puts forward the corresponding calibration methods for three key indicators: temperature distribution characteristics of the boxes, indication error of the temperature automatic monitoring system, and influence of the unpacking operation on the temperature distribution and change in the refrigerator. Combined with the actual situation, this paper gives a relatively reasonable expression method of the temperature calibration results of medical cold boxes, and it is helpful for the calibration of the cold equipment , cold chain transportation equipment and strain storage equipment.