How to conduct acceptance testing for reused instruments in new projects
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How should used instruments from previous projects be inspected in new projects? Is it sufficient to conduct tests on them themselves? Since they are used instruments, there are no certificates of conformity or quality documentation – so how does everyone usually go about inspecting them?
Evaluated from both the life cycle and functional aspects: Instruments generally have a lifespan; for example, in the case of transmitters, if they have been in use for over 10 years, it is necessary to consider whether to continue using them. Then there are the functions, such as whether the linearity and error of the pressure transmitter are still within the acceptable range.
For project acceptance, it is only necessary to calibrate the pressure transmitter; do calibration records suffice?