1. The ultrasonic flowmeter probe is used for a period of time, and irregular alarms may occur. This problem is more common when there are more impurities in the transport medium. Solution: Clean the probe regularly (recommended once a year). 2. When the ultrasonic flowmeter transport medium contains liquid impurities such as water, the flow metering tube is prone to effusion, and the freezing of the pressure tube may occur when the temperature is low, especially in the northern regions in winter. Solution: Purge or electrify the pressure tube 3, the ultrasonic flowmeter requirements for the pipeline is very strict, there can be no abnormal noise, otherwise it will affect the measurement error. During the propagation of ultrasonic waves, their strength is attenuated due to obstruction or absorption by impurities in the medium and medium. Whether it is an ultrasonic flowmeter or an ultrasonic level gauge, there is a certain requirement for the received sound wave intensity, so various attenuations are suppressed. 4. What is the instantaneous flow fluctuation? The signal strength is large, and the measured fluid fluctuation is large. Solution: Adjust the probe position, improve the signal strength, and ensure the signal strength is stable. If the fluid fluctuation is large, the position is not good. Re-select the point to ensure the 5D working condition after the first 10D. 5, the external clip type ultrasonic flowmeter signal is low? This depends on the technical content of the instrument itself. After a large number of test cases on the spot, it proves that the pipe length is long, the scale is serious, the pipe diameter is large, and the external clip type ultrasonic flowmeter has a very fast signal and the signal is stable. . Solution: For large diameter and serious scaling, it is recommended to use a good quality external clamp type ultrasonic flowmeter. The pipe at the probe installation should be cleaned, and the air between the probe and the workpiece surface should be removed with a coupling agent or coupling piece to make the ultrasonic wave. It can be effectively introduced into the pipeline to ensure sufficient sound intensity transmission on the detection surface. 6. Occasionally, there are bubbles in the measurement medium. Does the ultrasonic flowmeter with the time difference method have any influence? The external clip type ultrasonic flowmeter has a dual mode. When there is a bubble, it can be automatically transferred to the Doppler mode to measure. When the bubble disappears, it will automatically be measured by the time difference method. 7. The meter cannot be used under strong interference on the spot? On-site inverter or high voltage cable field strong electromagnetic interference Recommendation: Keep away from the inverter or high voltage cable field electromagnetic interference 8. What is the minimum diameter of the externally clamped ultrasonic flowmeter on the market? How much is the temperature Zui? Answer: The minimum pipe diameter can be measured to 6mm, the temperature can be measured at 550 °C, such as the measurement of molten salt and heat transfer oil, which is not possible with other brands of flowmeters. 9. How to choose a suitable ultrasonic flowmeter? Answer: Pipe material, pipe wall thickness and pipe diameter; fluid type, contain impurities, air bubbles and full pipe; fluid temperature, flow meter type, portable or fixed online. Water Treatment Chemicals,Chemicals Used In Water Treatment,Water Purifying Chemicals,Cooling Water Treatment Chemicals Jiangyin Lanyu Chemical Co.,Ltd. , https://www.jylanyu-chem.com
Ultrasonic flowmeter installation FAQ
common problem