In recent years, many factories have chosen to relocate from first - and second-tier cities to third - and fourth-tier cities for various reasons. After the relocation of the factory, all the equipment of the factory should also be relocated. So, the question is: "Can the calibration certificate address be changed after the instrument is relocated?"

The answer is no, the address of the calibration certificate can not be changed after the relocation of the instrument and equipment, and it is necessary to find a calibration institution to recalibrate and re-issue the calibration certificate. The specific reasons are as follows: 1, according to the requirements of CNAS (ISO/IEC 17025:2017), the time, place and calibration parameters contained in the calibration certificate are one-corresponding, indicating that the instrument and equipment are calibrated at a certain point in time at a certain address, and the calibration results of certain parameters are obtained, which has its uniqueness and correspondence. One of these factors cannot be changed. 2, the instrument and equipment from one place to move to another place, in the handling process, it is easy to impact, shaking and other effects of loss, resulting in accuracy affected, especially this long-distance handling, loading, unloading, disassembly, reinstallation and other operations, the instrument and equipment is more likely to cause damage. Recalibration can better guarantee the quality of customers' equipment. This is also the performance of the calibration body's responsibility to the enterprise. 3, after the relocation of the instrument and equipment, the calibration institution should not be called to change the address, and the regular calibration institution will not carry out these operations (in violation of CNAS regulations), but to find the calibration institution to re-calibrate the instrument and equipment, and re-issue the calibration certificate. Whether the plant is relocated to another location or the equipment is sold to another company, recalibration and certification are required.