Now ultrasonic flowmeters have been widely used in the measurement of heating pipes. The product is simple to install, convenient, long life, no mechanical loss, is a better measuring instrument, especially the portable ultrasonic flowmeter, as long as attached to the probe outside the tube, you can get the measurement flow. Pipeline treatment is not too much, the pipeline is closed without pressure loss, compared with other online instruments, pipeline fracture treatment, does not require any interference equipment, mechanical rotating equipment, reducing diameter, drainage hole plate, etc., easy installation, reduce the risk of leakage, has great application prospects in the heating industry.

To help make better use of portable ultrasonic flowmeters, we summarized some common usage problems, and all the people who helped us solved the analysis problems.

1. Unstable reading changes, the pipeline of the ultrasonic flow sensor of the device has large vibration or the flow control valve, pump, shrinkage hole flowmeter and other flow equipment that has been changed. Workaround: Change the flow sensor away from the vibration source or upstream of the changed flow device.

2. Inaccurate reading and large errors. Ultrasonic flowmeter sensors are installed at the top and bottom of horizontal pipes to agitate the sediment with ultrasonic signals. Solution: Install sensors on both sides of the pipe.

3. The ultrasonic flowmeter sensor is installed in the pipeline with water flow down, and there is no fluid overflow in the pipeline. Solution: Install sensors on the fluid-filled tube section.

4. Venturons, orifice plates, vortex flowmeters, turbine flowmeters or devices capable of shaking the flow heat, such as closed valves capable of producing accurate readings within the emission and allowable range of the sensor. Solution: Move the sensor from the above device to 30D, the above device to 10D or upstream of the above device.

5. The input diameter of the ultrasonic flowmeter does not match the diameter of the pipeline. Solution: Modify the pipe diameter to match.

6. The sensor is good, but the flow rate is low or no flow rate. The paint on the outside of the pipe prevented the rust from being removed. Solution: Root out pipe and device sensors from scratch.

7. Uneven pipe surface or ultrasonic flowmeter equipment at welded joints. Solution: Weld the pipe or move the pipe away from the weld.

8. The roundness of the pipeline is not good, the internal appearance is not lubricated, and the pipeline lining is scaled. This may occur if the pipe is cast iron. Solution: Select the area where the pipe material or lining is lubricated with an internal appearance (e.g. steel pipe).

9. Determine whether the medium is pure or the solid suspension agent is too low. Workaround: Choose another appropriate appearance type.

10. Fiber glass tube for sensor equipment. Solution: Remove the glass fiber.

11. When the sensor device is in the casing, the ultrasonic signal is weakened. Solution: Move the sensor to an area without wires.

12. The sensor and the pipeline are not well combined, and the coupling surface has gaps or bubbles. Solution: Use device couplings from the start.

13. The control valve will add the reading sensor too close to the external pressure of the operating valve when the flow rate is slightly closed or decreased, and when there are some closed valves, the flow rate is increased by measuring the flow meter to manipulate the valve outflow speed, and the flow rate is increased by reducing the aperture. Solution: Move the sensor away from the operating valve, move the sensor upstream from the control valve 30D, or move the sensor upstream from the control valve 5D.

The above is the problem encountered in the process of using the portable ultrasonic flowmeter and its solution, if you encounter other problems in use, you can consult us.