In accordance with the Russian legislation it is necessary to divide concepts “calibration of measuring instruments” and “verification of measuring instruments” (often called “state calibration”) and the approach to their realization.
Measuring instruments, outside the scope of state regulation, may pass through calibration procedure on a voluntary basis, but it is necessary to control their metrological characteristics, for example, after the release of measuring instruments (metrology instruments) out of production or after repair, during operation, etc.
Measuring instruments, under the scope of state regulation, must pass initial or periodic verification procedure (often called “primary or periodic state calibration”), confirmation of conformity of metrology instruments (measuring instruments) to established metrological characteristics. For further details about the procedures and legal requirements to verification, please follow the link Verification of measuring instruments.
TMS specialists, together with accredited laboratories, using of measurement standards (etalons), subordinate (which have the traceability) with the state measurement standards (etalons) of units organize and carry out the calibration of measuring instruments.
TMS experts based on the results of works hands the customer the original copies of calibration certificates of measuring instruments.