Installation of fixed ultrasonic flow meter and matters needing attention

Abstract: The information on the installation and precautions of the fixed ultrasonic flowmeter is provided by the excellent flowmeter and flowmeter manufacturers. 1. Selection of installation methods The installation methods of fixed ultrasonic flowmeter sensors include V method and Z method. V method DN15mm-200mm pipeline is preferred to use V method. When installing, the two sensors are horizontally aligned, and the center line can be parallel to the axis of the pipeline, and pay attention to the certain emission direction. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following are the details of the installation of fixed ultrasonic flowmeters and their precautions. 1. Selection of installation method The installation methods of fixed ultrasonic flowmeter sensors include V method and Z method. V method is preferred for pipelines with DN15mm-200mm. When installing, the two sensors are horizontally aligned, and the center line is parallel to the axis of the pipeline. Note that the emission directions must be opposite (the two sensors are facing inward). The V method has the characteristics of convenient use and accurate measurement. For pipes with a diameter smaller than DN50mm, the installation accuracy is high, please pay attention to the parameters of signal strength, signal quality and transmission time ratio. The Z method is preferred for pipelines with DN200mm-6000mm, and the Z method can also be used when the signal cannot be detected by the V method or the signal quality is poor. When installing, make the vertical distance between the two sensors along the pipe axis equal to the installation distance, and ensure that the two sensors are on the same axial plane, and pay attention to the opposite direction of emission (the direction of the two sensors is inward). Since the Z method is that the ultrasonic wave is sent and received directly in the medium propagation, the signal is not reflected, so the signal strength is attenuated the least. Therefore, the Z method has the characteristics of high signal strength and reliable operation. 2. Enter the measurement parameters to get the installation distance. The flowmeter needs to be initially set before starting the measurement, usually 10—Menu No. 26 is set item by item (M39 menu is available in multiple languages). After the setting is completed, the sensor installation distance can be obtained in M25. This distance refers to the distance between the innermost edges of the two sensors, and the sensor is installed according to this data. 3. Handling installation points There are two installation points for fixed ultrasonic flowmeter sensors, which are divided into upstream sensors and downstream sensors. When dealing with these two installation points, the processing area of ​​one installation point should be similar to the size of the probe, and the processing area of ​​the other installation point should be 2 or 3 times the size of the probe (centered on the installation point) to facilitate signal debugging . First clean the area outside the tube where the sensor is to be installed to remove rust and paint. If there is a rust layer, it should also be removed. It is best to use a sander to polish the metal luster, and then use a clean rag to wipe off the oil and dust. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Fixed Ultrasonic Flow Meter Installation and Precautions'

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