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1. What are the types of installation methods for ultrasonic flowmeters?
There are four main installation methods for ultrasonic flowmeters: external clamp type, insertion type, pipe section type, and portable. The choice depends on the pipeline conditions, measurement accuracy requirements, and budget.. 1. External clamp installation method: Fix two sensors on the outer wall of the pipeline with fixtures without cutting or drilling. Applicable scenarios: temporary measurement, cleaning liquids (such as water, crude oil), corrosive media. Advantages: Non contact, no damage to pipelines, no pressure loss, easy installation. Disadvantages: Sensitive to scaling or material on the inner wall of the pipeline, with slightly lower accuracy (about ± 1%)
2. Insertion installation method: Drill holes on the pipeline and weld the base, insert the sensor into the pipeline to come into contact with the fluid. Applicable scenarios: long-term measurement, dirty fluids (such as sewage and slurry). Advantages: Higher precision (± 0.5%~1%) and stronger anti-interference ability compared to external clamping. Disadvantages: Installation needs to be stopped, with slight pressure loss
3. Pipeline installation method: directly replace a section of pipeline, and the sensor is already built into the flange connection. Applicable scenarios: High precision requirements (such as chemical and pharmaceutical industries), small pipe diameters (DN15-DN200). Advantages: The highest accuracy (± 0.5%), good stability, and not affected by pipeline materials. Disadvantages: High cost, installation requires cutting the pipeline
4. Portable installation method: using an external clamp sensor to temporarily attach to the outs
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2. The external clamp type ultrasonic flowmeter has a signal with a Q value but does not display the flow rate
As the title suggests, the signal strength is not very high, and the Q value fluctuates but does not display the flow rate.
. There are several situations that can cause it:1. Installation issues. It is unknown whether the pipe wall was polished before installing the external sticker, whether the coupling type adhesive was applied when installing the transmission hall canopy sensor, and whether the installation size is correct.
2、 Is the upstream and downstream of the sensor installed upside down? You can try switching upstream and downstream.
3、 The water flow rate in the pipe is too low, to the point where the flow meter cannot determine.
3. Installation methods of external clamp type ultrasonic flowmeter | V method, Z method, N method, W method
The installation methods of external clamp type ultrasonic flowmeter