Flowlinemine series ultrasonic liquid level meter is a kind of liquid level meter with high cost performance. It has the technical advantages of small size, simple programming, high precision, small blind area, probe anti-corrosion, and the price has absolute advantage in the imported ultrasonic products. In promoting the application of flowline ultrasonic liquid level meter, the author has also been widely recognized and praised by customers. However, in the actual application, there are also a few customers who report that the use is not normal and the blue fault light on the top of the ultrasonic is always on. After the author carefully communicated the installation and use, he personally visited different customers for many times. Finally, it gives a good solution without increasing the cost of customers.

　　In order to solve the problem, we must know the design of flowline & nbsp; mine & nbsp; series < strong > ultrasonic level gauge < / strong >. This series of ultrasonic liquid level meter is the smallest in the world with a 0 degree emission angle. The advantage of small transmitting angle is that it can gather energy very well, and has better penetration to foam, steam, light dust and other occasions. It can be directly applied to narrow occasions, thereby improving the applicability and accuracy of products. When no echo and internal software error are received, the top blue indicator light is always on.

　　In combination with the actual situation I have encountered, there are mainly two situations when the fault indicator light is always on, and the solution is proposed here. I hope it can help you to use this series of ultrasonic level meters, and also hope it can provide reference for you to choose ultrasonic level meters.

　　1. When the ultrasonic wave keeps zero liquid level, the top light is on, and the output current is 22mA. Moreover, when the liquid level is restored after a period of time, the fault can not be automatically removed, and it is normal after power off and restart, which brings unnecessary trouble or even loss to customers (for example, no one is on duty at night).

　　This kind of failure is the selection of installation accessories. As the flowline & nbsp; mine & nbsp; series ultrasonic level gauge is the world's first 0-degree emission, the advantages are also described above. In addition, it has another distinctive feature.UltrasonicIn addition to the plane head, there is also a launch here in the thread. In case of continuous zero position, the metal bracket shall be used in addition to the mounting parts. The ultrasonic level gauge will recognize that the signal strength of the bracket part is greater than that of the plane head. The distance between the metal bracket and the transmitted wave is in the blind area. Therefore, the ultrasonic is in the protection state, the fault light is always on, and the output is 22mA.

　　The solution is to use non-metallic supports. Because when the non-metallic bracket is selected, the transmitted wave at the thread can penetrate out, and the echo signal of the zero point liquid level will definitely be greater than the echo signal at the thread. After the above explanation and practical improvement, all the faults are solved, and both the supplier and the demander are happy. Thus, cooperation has been further strengthened.

　　2. After debugging and reprogramming, the top fault light is always on and the output current is 22mA. In case of this kind of failure, it is verified that it is still in the process of programming and debugging and fails to comply with the requirements of the manual. Resulting in the process of disorder and self-protection. When the customer is debugging and programming the ultrasonic liquid level meter, he can't wait for the indicator to flash normally, or the steps of the programming method are not correct at all, which is in unstable programming and debugging. If it fails to program and debug as required for many times, the ultrasonic level gauge will refuse to work and protect itself. The solution to this problem is to reset the ultrasonic liquid level meter as required and reprogram it. If you reprogram multiple times without resetting, the above faults will occur.

　　At present, the author's fault situation is roughly the above two kinds, which have been solved very well. If there are customers (including those not purchased from Zhuhai Saisite company and Wu Hongzhang himself), they can call to communicate the new situation and solve it together. It is believed that the flowline ultrasonic liquid level meter, a product with high cost performance, can be used normally, which can truly meet the requirements of customers for full-automatic detection and control of liquid level and save costs to the greatest extent.