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When it comes to ultrasonic flowmeters, you may already be using them, but today the technical editor wants to talk to you about the common faults of the indicator lights on ultrasonic flowmeters and the solutions to these problems. These are answers and tips derived by experts in flowmeter technology through long-term practice and experience; they are provided here for your reference only. 1. When the ultrasonic level is continuously at zero, the top light turns on, and the output current is 22 MA. Moreover, when the liquid level is restored after some time, the fault is not resolved automatically; it is necessary to turn off the power and restart the system for things to return to normal, causing unnecessary trouble and even losses for the customer. Cause analysis: This fault occurs due to the choice of installation accessories. Since ultrasonic waves are emitted not only from the flat head but also at the threads. If a constant zero level is required, metal brackets should be used for the mounting components. The metal bracket section is at a blind zone distance from the transmitted wave. Therefore, the ultrasonic device is in protection mode, the fault light remains on, and 22 MA is outputted. Solution: Use a non-metallic bracket. Because with the use of a non-metallic bracket, the emitted waves at the threads can penetrate through, and the echo signal from the zero-level liquid level will definitely be greater than the echo signal from the threads. 2. After tuning and reprogramming, the fault light on the top remains illuminated, and the output current is 22 MA. Cause analysis: This type of malfunction occurs because the programming and debugging processes were not carried out in accordance with the instructions provided. When customers are debugging and programming ultrasonic level meters, they fail to wait for the indicator light to flash properly, or the programming steps are simply incorrect, resulting in unstable programming and debugging processes. If programming and debugging are not carried out as required on multiple occasions, the ultrasonic level gauge will refuse to operate in order to protect itself. Solution: First, reset the ultrasonic level gauge as required, and then reprogram it. At present, our company is looking forward to the future with great optimism; we are working hard to build a solid foundation, keeping up with the times, and operating in good faith. With top-quality products and excellent services, we are committed to contributing to society and helping to develop China’s automation instrumentation industry. Our future will be shaped through cooperation with you! We will compete in the market by offering high-quality products at competitive prices, along with superior service. Our company is eager to work in good faith with customers from all over the world, providing them with enthusiastic, high-quality, and efficient service!