What are the main applications of ultrasonic level gauges? What are the common faults of ultrasonic level gauges?
Author: Source: Date: 2021-07-14 17:25:07
As we all know, any instrument will inevitably encounter some obstacles in long-term use, and ultrasonic level gauges are no exception. So what are the main applications of ultrasonic level gauges? What are the common faults during use?
According to the working principle, the level meter can be divided into seven categories: direct reading, differential pressure, buoyancy, electromagnetic, nuclear radiation, acoustic wave, and optical. Among them, the slurry liquid and the corrosive liquid can adopt the capacitive nuclear radiation type and the ultrasonic type.
What are the main operating areas of ultrasonic level gauges?
Ultrasonic level gauges can be used in the field of sewage treatment (water and sewage treatment: pumping room, catchment well, biochemical reaction tank, sedimentation tank, etc.), power development (mortar tank, coal slurry tank, water treatment, etc.), metallurgical industry, etc. Field use.
What are the common faults of ultrasonic level gauges in use?
Common fault 1: Full scale or arbitrary data appears
The main reason is that there is a blind zone in the ultrasonic level gauge. Generally, the measuring distance of the ultrasonic level gauge is within 5 meters and the blind zone is 30-40 cm. The measuring distance of the ultrasonic level gauge is within 10 meters. The blind zone is 40-50 cm. After the ultrasonic level gauge enters the blind zone, the ultrasonic wave will have full scale or arbitrary data, which will cause the ultrasonic level gauge to fail to work normally.
Common fault 2: When there is stirring in the measuring container, the fluctuation of the liquid will be relatively large, which will affect the measurement value of the ultrasonic level gauge.
Ultrasonic level gauges generally measure distances that refer to calm water. Like 5-meter ultrasonic level gauges, they actually measure a maximum distance of 5 meters from calm water. Of course, the actual factory will make 6 meters, but when the measuring container is in agitated condition, the signal will be weak.
Common fault 3: There is foam on the surface of the liquid.
If there is foam on the surface of the liquid to be measured, it will also cause the measurement of the ultrasonic level gauge to fail, because the foam will absorb ultrasonic waves, which will cause the echo signal to deteriorate. Once the foam on the surface of the liquid covers about half of the total area. Then the signal emitted by the ultrasonic level gauge is mostly absorbed, causing the level gauge to fail to receive the reflected signal.
Common fault 4: There is electromagnetic interference signal at the measurement site
Because there are many running motors, electric welding, frequency converters and other equipment on the industrial site, it will affect the measurement of the ultrasonic level gauge, and the electromagnetic interference will exceed the ultrasonic wave received by the probe. Echo signals, thereby affecting the measurement results.
Common fault five: If the measurement environment has a high temperature, it will also affect the measurement of the ultrasonic level gauge
Measuring liquid medium below 30-40 ℃ generally does not produce steam and mist, but once the temperature exceeds 30-40 ℃, the surface of the measuring liquid will easily generate steam or mist. Ultrasonic waves passing through the water vapor will cause the letter to attenuate. Resulting in no measurement results.
In general, when using the ultrasonic level gauge, if you encounter the above problems, you can make adjustments to the above problems. If there are other malfunctions during the use of the ultrasonic level gauge, you can consult the official website of Huikeda Instruments, and we will provide you with solutions to many operational malfunctions.