Calibration and control of testers and measurements to guarantee all the testers and measurement are available for their measuring and testing. 量具和测试设备的校验和管理，确保所有量具和测试设备满足测试需求。
The set pressure of all pressure and vacuum relief devices should be verified by testing before the devices are placed in operation. 所有压力和真空泄放装置在投入运行前，应对这些装置的设定压力进行校验。
