Anemometer 3Q verification

Anemometer 3Q verification

1. Purpose

In order to confirm that the facilities and equipment related to the anemometer can comply with the standards and requirements of the "Good Manufacturing Practice for Drugs" and JJF1939-2021 "Calibration Specification for Thermal Anemometers", and to confirmanemometerAccording to the design, it can be used normally within the predetermined limits and allowable range, and the performance of each part can be effectively repeated, maintaining stability and reliability continuously, and meeting the requirements of enterprise use; And develop effective preventive measures for potential risks.

Verification purpose

1. Through verificationanemometerIdentify potential deviations in the operation or use of facilities and equipment that do not meet requirements, as well as unreasonable system parameter settings, and make adjustments and corrections to ensure that the operation of relevant facilities, equipment, and systems meets the specified requirements and standards.

2. Through verificationanemometerDevelop effective preventive measures for related facilities and equipment that may affect the normal use risk of the enterprise.

3. ConfirmanemometerThe relevant facilities and equipment can comply with the "Good Manufacturing Practice for Drugs" andJJF1939-2021 "Calibration Specification for Thermal Anemometer"Confirm that the UV spectrophotometer can be used normally within the established limits and allowable range according to the design standards and requirements, and that the performance of each part can be effectively repeated, maintaining stability and reliability continuously, and meeting the requirements of the enterprise's use; And develop effective preventive measures for potential risks.

2. Performance Confirmation

1. Indication error

The difference between the reading of the measuring instrument and the reference value of the corresponding input volume.

2. Repeatability

Measurement precision under a set of repetitive measurement conditions.

3. Turbulence degree

The degree of high-frequency pulsation that exists relative to the airflow velocity at any point within the wind tunnel working section is represented by the root mean square of the pulsation velocity.

4. Uniformity

The uniformity of airflow velocity distribution on the same cross-section within the wind tunnel working section is represented by the relative standard deviation of airflow velocity at each point on that cross-section.

5. Stability

The degree of fluctuation of airflow velocity over time within the working section of a wind tunnel is expressed as the ratio of the maximum change in airflow velocity relative to the average airflow velocity within a specified time interval to the average velocity.

6. Pitot tube coefficient

The coefficient used to correct the differential pressure value measured by a standard pitot tube is expressed by multiplying the root mean square of the ratio of the differential pressure values measured by the standard pitot tube and the pitot tube by the standard pitot tube coefficient.

According to the inspection personnelIndication error of anemometerRepeatabilityTurbulence degreeUniformity, stabilityPitot tube coefficientTest the performance indicators to confirm that they meet the design and usage requirements. Once the performance confirmation is passed, the anemometer can be put into use. If any item in the performance confirmation fails, corresponding rectification should be carried out, and it can be put into use after passing.

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