Clamp-on flow meters have clear requirements for pipeline conditions; non-compliance may directly lead to inaccurate measurements or failure to work properly. The core requirements are as follows:
- Pipeline Material: Only metal pipelines (e.g., carbon steel, stainless steel, cast iron) or rigid plastic pipelines (e.g., PVC, PPR) are supported. Flexible hoses, glass pipes, and pipelines with excessively thick/soft linings (e.g., rubber-lined pipelines) are not suitable. This is because soft/non-sound-conducting materials will significantly attenuate ultrasonic signals, making it impossible to detect flow.
- Pipeline Wall Thickness: The conventional requirement is that the wall thickness is ≤ 20mm. Excessively thick walls will increase the difficulty of signal penetration, requiring additional selection of “special probes for thick-walled pipelines”.
- Pipeline Diameter Range: Mainstream models support DN20-DN3000 (some models can be extended to DN15-DN5000). It is necessary to confirm in advance whether the actual pipeline diameter is within the range covered by the flow meter. Too small a diameter (e.g., DN < 15) may easily cause accuracy deviations due to unstable flow fields.
If the pipeline conditions do not meet the requirements, it is recommended to communicate with the technical team first to assess whether it is necessary to replace the probe or select another type of flow meter (e.g., insertion type).
Post time: Oct-14-2025