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Which working conditions are not suitable for the use of ultrasonic level gauges?

Which working conditions are not suitable for the use of ultrasonic level gauges?

2021-10-11


The working condition is the working environment of the level gauge. Many users pay attention to the price when choosing a level gauge. As a result, they can't use it after purchase and can only return the product and purchase it again. In order to avoid this situation as much as possible, the editor will successively summarize inappropriate working conditions for high-frequency radar level gauges, guided wave radar level gauges and other liquid level gauges. Today, start with the ultrasonic level gauge.




Working condition 1: Working condition with too high pressure. Pressure has an inhibitory effect on the speed of ultrasonic sound. The higher the pressure, the stronger the inhibition. Therefore, once the medium pressure exceeds 0.2Mpa, it is recommended not to use an ultrasonic level gauge, as the measurement is prone to inaccurate or even impossible to measure.

Working condition 2: working condition of negative pressure. Ultrasonic level gauges are not suitable for high pressure, and radar level gauges are not suitable for negative pressure. Why? Ultrasound needs air as a medium to propagate. Under negative pressure, the air is thin, which is not conducive to the propagation of ultrasound. In the case of pressure, the ultrasonic level gauge is likely to cause the range to be reduced, measurement errors, or even impossible to measure.

Working condition 3: Working condition with foam, water vapor and dust. Under these working conditions, the ultrasonic waves emitted by the ultrasonic level gauge will be scattered, resulting in weakening of the echo signal and measurement errors. Therefore, under such working conditions, a radar level gauge is appropriate to replace the ultrasonic level gauge.

Working condition 4: Working condition with large temperature and pressure changes. Ultrasonic level gauges are easily affected by temperature, pressure and humidity. Therefore, if there is no correction under such working conditions, errors are prone to occur.

 

Under normal circumstances, the ultrasonic level gauge is the ideal choice for medium measurement under normal temperature and pressure, but it is necessary to pay attention to the measurement medium. If the medium has a strong ability to absorb sound waves, it is not suitable for selection.


When choosing a level gauge, we must take the working condition as the primary reference factor. When the working condition is suitable, we should consider the cost performance. Only in this way can the level gauge be put into use as soon as possible while saving time to maximize its effect.

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