The period verification of measuring instruments is usually carried out through prescribed procedures to determine whether the instruments continue to be maintained within the established accuracy range. The purpose of the verification is to ensure the accuracy and reliability of the measuring instruments.
The following are the basic steps to carry out the verification during the measuring instrument:
1.Preparation:
According to the use of the instrument and the verification period, determine the measuring instrument to be verified.
Confirm the required verification standards and methods, which can be determined based on national standards, industry standards, or manufacturer recommendations.
The standard apparatus and auxiliary equipment required for the preparation of the verification must have a higher level of accuracy than the apparatus being verified.
2.Environmental conditions:
Ensure that the verification environment meets the requirements such as temperature, humidity, vibration, electromagnetic interference, etc., which may affect the performance of the measuring instrument.
3.Implementation of verification:
Measuring instruments are inspected and tested in accordance with established procedures. This may include comparative measurements, zero point checks, range checks, resolution tests, and more.
All verification results are recorded, including readings, errors, and other relevant parameters.
4.Result Evaluation:
According to the verification results and the allowable error range, the state of the measuring instrument is evaluated, and whether the measuring instrument is within the specified accuracy requirements.
If the measuring instrument fails to be verified, it needs to be calibrated, adjusted or repaired and then re-verified.
5.Organize reports and tags:
Preparation of verification reports detailing the verification process, results and conclusions.
A conformity mark is given to a measuring instrument that has passed the verification, which may be a label or a certificate that records the date of verification and the scheduled date of the next verification.
6.Follow up and hold:
Continuously monitor the use of the appliance and maintain normal use and maintenance until the next inspection cycle.
The frequency of inspections generally depends on the frequency and importance of the measuring instrument, the results of previous inspections, and the manufacturer's recommended maintenance intervals. The above process needs to be carried out in accordance with the relevant national standards and regulatory requirements. If the verification cannot be completed on your own, you may need to hire a qualified third-party service provider to conduct a professional verification.