Pressure module/calibrator calibration involves verifying the accuracy and performance of pressure-measuring modules and multifunction calibrators used in industrial testing and instrumentation work. These devices are compared against certified reference standards to confirm that their pressure readings remain precise across the required measurement ranges. The process includes applying known pressures, recording deviations, adjusting the module or calibrator if necessary, and documenting all results for traceability. Regular calibration ensures reliable field measurements, supports compliance with industry and regulatory standards, reduces the risk of process errors, and maintains confidence in both troubleshooting and critical pressure-control applications.