How To Control Errors In The Automatic Calibration Process Of Water Meters

How to control errors in the automatic calibration process of water meters

In actual water meter calibration work, to minimize errors, the following aspects should be taken to reduce errors:

The environment needs to meet the calibration requirements.

The verification regulations clearly require the verification environment, so the corresponding water meter verification method can only ensure the accuracy of the verification results under the environmental conditions specified in the regulations. The ambient temperature can be controlled by air conditioning, and during the calibration process, the water temperature will gradually rise. If necessary, lower temperature tap water can be injected into the circulating water tank to reduce the water temperature.

Timely update and upgrade the hardware and software of the calibration device.

If the hardware and software design of the calibration device is unreasonable, the manufacturer can be contacted to request improvement. For example, upgrading image processing software to improve the accuracy and recognition rate of water meter readings; When calibrating, the pressure is unstable. A sufficiently powerful water pump and a sufficiently large stabilizing tank can be used to ensure the stability of the water source pressure.

Regular maintenance and upkeep.

During long-term use, the components of the calibration device may experience wear and aging, and the measurement characteristics of the measurement standards may change. Therefore, regular maintenance is necessary to promptly identify factors that may introduce errors. For example, whether each valve will leak, whether the pipeline will leak, whether the flow meter can be used normally, whether the water level measuring instrument of the standard gauge has displacement or whether the measurement is accurate, and so on. Once the above parts are found to have faults, they must be repaired or replaced in a timely manner. It is necessary to promptly calibrate the calibration device before using it, as maintenance or replacement may cause changes in the measurement characteristics.

Improving calibration methods

Because the automatic calibration device is different from traditional calibration equipment, the calibration method cannot simply follow the past methods. In some processes and details, improvements need to be made based on the structure and characteristics of the automatic calibration device. However, there are inevitably some defects in the design of automatic calibration equipment, which require manual intervention during the calibration process to better reduce the calibration error of the water meter.

Improve the technical level of calibration personnel

Verification personnel need to study metrological laws and regulations seriously, improve their understanding in ideology, proficiently master quality and technical supervision and metrological verification related policies, study verification regulations seriously, and strive for excellence in verification technology. Cultivate the habit of being serious and meticulous, improve the level of data processing skills, continuously improve the level of metrological verification technology while learning theory, constantly summarize experience in daily water meter verification process, closely link theoretical knowledge with practical work, identify factors that may cause errors in verification results, and find solutions to reduce and avoid the occurrence of errors in metrological verification.