Calibration in Flowmeter Production Calibration The last step in flowmeter production to ensure accurate measurements is the calibration process. Every produced flowmeter is calibrated in order to make precise and accurate measurements. Flowmeter calibration should be done by experts with the right equipment and reference devices. The produced flowmeter is connected to the line and a constant amount of flow is passed, this flow value is measured with reference devices at the same time and the measurement values are compared. Periodic Calibration. Periodic calibration is done in order to control the measurement deviations of the flowmeter, which is already in operation, and to ensure that the precise measurement can continue. Deviations outside the limit that will occur in the measurements can cause great damage to the enterprises during production. Periodic calibration should also be done with the right equipment and reference devices and should be documented. Why is calibration necessary? Flowmeters, like other devices, are subject to aging and wear during use, and errors and deviations may occur in the measurement values, due to a number of reasons during the process. With the calibration process, these deviations can be prevented and the causes of incorrect measurement can be eliminated by performing device maintenance. Another reason is to certify the measurement accuracy of the device when necessary. The importance of the certificate. The calibration certificate is the most significant document proving that the transactions are carried out correctly and appropriately. It is arranged separately for each product. The companies that can issue the calibration certificate are regularly audited by the authorized institutions of the state and the transactions are conducted correctly. The calibration process performed by a non-certifying organization is not be able to provide reliable accuracy in measurements and is not accepted by many businesses and government organizations.