4 Frequently Asked Questions About Portable Ultrasonic Flow Meters

I don't know how you understand and understand the portable ultrasonic flowmeter? Xiaobian has often received common questions about the use of portable flowmeters by you recently. Come and see if you also encounter the following common problems in the process of using: Nowadays, ultrasonic flowmeters are used in heating Pipeline measurement is widely used. It is favored by the market because of its simple and convenient installation, no mechanical loss and long life. The portable ultrasonic flowmeter that I want to introduce to you can measure the flow only by attaching a probe outside the tube. There is no need for too much treatment on the pipeline, and there is no pressure loss for the sealing of the pipeline. Compared with other online instruments, there is no need to cut the pipe, no turbulence equipment, mechanical rotating equipment, no need for diameter reduction, drainage orifice, etc., easy installation, leakage The hidden danger is reduced, and it has huge application potential in the heating industry. In order to help you better use the portable ultrasonic flowmeter, the editor summarizes several common problems of its use, hoping to help you analyze and solve it. 1. The readings are unstable and change violently. The pipeline of the ultrasonic flow sensor of the device has large oscillation or there is a device that changes the flow state (such as the flowmeter device is downstream of the regulating valve, pump, and systolic orifice). Solution: Refit the flow sensor away from the source of oscillation or move it upstream of the device that modifies the flow regime. 2. No reading, big error Solution: Install the sensor on both sides of the pipe. 2. The ultrasonic flowmeter sensor is installed on the pipe where the water flows downward, and the pipe is not filled with fluid. Solution: Install the sensor on the fluid-filled pipe section. 3. There are devices that strongly shake the flow state, such as: venturi, orifice, vortex flowmeter, turbine flowmeter or some closed valves, just within the range of sensor emission and reception, so that the reading does not occur. The solution to the instrument: install the sensor in a place far away from the above-mentioned equipment, the upstream of the sensor is 30D away from the above-mentioned equipment, and the downstream of the sensor is 10D away from the above-mentioned equipment or moved to the upstream of the above-mentioned equipment. 4. The input pipe diameter of the ultrasonic flowmeter does not match the inner diameter of the pipe. Solution: Correct the pipe diameter to match. 3. The sensor is good, but the flow rate is low or no flow rate 1. Because the paint and rust outside the pipe are not cleaned up. Solution: Remove the pipes and equipment sensors from scratch. 2. The pipeline surface is uneven or the ultrasonic flowmeter device is at the welding seam. Solution: smooth the pipe or keep it away from the weld. 3. The roundness of the pipeline is not good, the inner and outer surfaces are not lubricated, and there is tube lining type scaling. This may be the case if the pipe is cast iron. Solution: Select the place where the inner and outer lubricating pipe materials or linings such as steel pipes are used. 4. The measured medium is pure or solid suspended solid is too low. Solution: Choose other types of appearance that are suitable. 5. Sensor equipment on fiberglass pipes. Solution: remove the glass fiber. 6. When the sensor device is on the casing, the ultrasonic signal will be weakened. Solution: Move the sensor to the uncased pipe section. 7. The sensor and the pipeline are not well coupled, and there are gaps or air bubbles on the coupling surface. Solution: Re-install the couplant. 4. When the control valve is somewhat closed or the flow rate is reduced, the reading will increase the sensor installed too close to the downstream of the control valve. When the valve is closed, the practice of measuring the flowmeter is to control the valve to reduce the diameter of the flow rate and increase the flow rate. Add to. Solution: move the sensor away from the control valve, the upstream of the sensor is 30D away from the control valve, or move the sensor to the upstream of the control valve and 5D away from the control valve. u200bu200bu200bu200bWhether you can understand the above four categories after reading it, if the above summary of the editor can solve the fundamental problem for everyone, I am very happy, but if it does not solve your problem, it doesn’t matter , You are welcome to call and make inquiries at any time, or log in to Kaidi's official website for detailed inquiries.
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