Accuracy is a core indicator of flow meters. Customers often consult about “inaccurate accuracy” or “deviations”. The answer should be divided into two parts:
- General Accuracy Range: Under the condition that the installation requirements (normal pipeline and flow field) are met, the liquid measurement accuracy is usually ±1.0% of reading, with a repeatability of ≤ ±0.2%, which meets the needs of most industrial metering (e.g., energy monitoring, water treatment) and civil metering.
- Common Causes of Actual Deviations (guiding customers to troubleshoot):
- Improper Installation Location: Too close to elbows, valves, or pump outlets (it is recommended that the straight pipe section upstream is ≥ 10 times the pipe diameter and that downstream is ≥ 5 times the pipe diameter), resulting in turbulent flow fields.
- Poor Probe Coupling: No special coupling agent is applied between the probe and the outer wall of the pipeline, or the coupling agent is unevenly applied, resulting in air gaps.
- Incorrect Parameter Settings: Failure to correctly input parameters such as pipeline inner diameter, wall thickness, and material, leading to calculation deviations of the flow meter.
- Changes in Medium Conditions: The temperature and viscosity of the measured liquid exceed the applicable range of the flow meter (e.g., a high-temperature probe is required for temperatures > 120℃).
Post time: Oct-14-2025