Difference between pressure gauge calibration and verification

The calibration and verification of pressure gauges are two distinct processes to ensure their accuracy. - **Calibration** refers to the process of comparing the reading of a pressure gauge with a standard of known accuracy in order to determine its deviation. Calibration can be carried out within the company to ensure that the equipment remains accurate within its normal operating range. Calibration is usually carried out by the company itself or by third-party organizations, with the aim of ensuring consistency between the readings of measuring instruments and the actual values. - **Verification** is a statutory test carried out in accordance with** national or international standards, aimed at confirming whether pressure gauges meet the technical requirements stipulated by law. Testing is usually carried out by **authorized institutions, and is accompanied by the issuance of a certificate of conformity. The calibrated pressure gauge is certified to meet specific safety and accuracy requirements. For the **safety accessories of special equipment**, such as pressure gauges, **verification is usually required** to ensure that the safety and reliability of these devices meet the requirements of laws and regulations. This is because if these devices fail, it could lead to serious safety accidents. In general, pressure gauges used within enterprises are calibrated regularly to maintain their accuracy, whereas safety accessories for special equipment usually need to be inspected in accordance with legal requirements to ensure that they meet the necessary safety and performance standards. .

Gauge pressure meters that are subject to mandatory calibration for use in safety protection, medical and health care, environmental monitoring, and trade settlement must be calibrated, while the rest can continue to be adjusted.