Ultrasonic level indicator light troubleshooting

Ultrasonic liquid level gauge in the actual application situation, encounter the top blue ultrasonic fault light always lit accident, to solve the fault light is always on, you must understand the ultrasonic level gauge design. This series ultrasonic level gauge is 0 degree emission angle, which is the smallest emission angle in the world. The advantage of small emission angle is that it can collect energy well and have better penetration in foam, steam, mild dust and other occasions, and can be directly applied in narrow places, thereby improving the applicability and accuracy of the product. When no echo is received and an internal software error occurs, the top blue LED is on.

There are mainly two kinds of situations in which the fault indicator is always on. The solution is as follows:

1. When the ultrasonic wave continues to zero level, the top light is on and the output current is 22MA. Moreover, when the fluid level is restored after a period of time, the fault cannot be automatically cancelled, and it needs to be normal after the power is turned off, causing unnecessary trouble or even loss to the customer.

This failure is the choice of mounting accessories. Since the ultrasonic level gauge is the world's first zero-degree launch, the advantages are also described above. In addition, its other distinctive feature is that the launch of the ultrasonic wave is also emitted from the thread, in addition to the flat head. If there is a continuous zero position, use metal brackets for mounting parts. The ultrasonic level gauge will recognize that the signal strength of the bracket part is greater than the signal strength received by the flat head. The distance between the metal support part and the transmitted wave is in the blind zone. Therefore, the ultrasonic wave is in the protection state, the fault light is on, and the output is 22MA. The solution is to use non-metallic stents. Because the non-metallic stent is used, the transmitted wave at the thread can penetrate, and the echo signal of the zero liquid level will definitely be larger than the echo signal at the thread.

2. After debugging and reprogramming, the top fault light is always on and the output current is 22MA. The occurrence of this kind of failure situation, after actual verification, or in the process of programming and debugging, failed to follow the instructions. The resulting program is disorderly and self-protected. The customer is not able to wait for the indicator lamp to flash normally when debugging the programming ultrasonic level meter, or the programming method steps are not correct at all, and it is in unstable programming and debugging. If it is repeatedly programmed and debugged as required, the ultrasonic level gauge will refuse to work and protect itself. The solution to this failure is to reset the ultrasonic level gauge as required and reprogram it. If you reprogram multiple times without resetting, the above fault will occur.

Ultrasonic liquid level meter, a very cost-effective product, can truly solve the customer's requirements for automatic detection and control of the liquid level, while maximizing cost savings.

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