Što Je The Working Blind Zone Of Ultrasonic Liquid Level Gauge?

When the object is close to the eye and the angle is fixed, but it is not clear or invisible, this range is called the blind spot. The blind area of the ultrasonic level gauge is also the same as the svat area of the human eye.
The working princip of the ultrasonic liquid level mjerač is is reald based on the emission and reception of ultrasonic waves. The speed of ultrasonic transmission in the air is certain. Ultrasonic waves are sent out, and then the waves reflected by the liquid surface or object surface are received, and the timeing starts from the emission and ends when the echo is received. The time for the ultrasonic wave to travel in the air is fiks. Because it is a round trip, the the actual distance is half the distance. The depth of the pond or the height of the tank is certain. The actual liquid level is the the depth of the pool minus the distance measured by the ultrasonic liquid level Gauge, which the the height of the the liquid level or material level. Thus, ultrasonic measurement of liquid level or material level .
The dead zone of the ultrasonic liquid level mjerač varies according to the range. The smaller the range, the smaller the dead zone, and the larger the the range, the larger the syl zone. But general between 30cm{{1}cm. Stoga, the blind area must be taken into account when installing the ultrasonic liquid level gauge. In special occasions, the blind area will be Required to be very small. At This time, a small Blind Area Ultrasonic Liquid Level Gauge Can Be considered, And Its Blind Area Is General Only 4-6cm. But its range is Relatively small, Only 0.6m. In many fields of liquid level measurement, due to the limitation of space and installation conditions, an ultrasonic liquid Level Gauge With A Small Blind Zone Required.
When the liquid level of the ultrasonic liquid level gauge enters the blind zone, it will obično display the liquid level position corresponding to the secondary echo. For example, if the blind zone is {{{{{{{{{ the distance from the liquid surface to the transducer (or probe) surface is 0.2m, the liquid level gauge will display a liquid level value corresponding to a space distance of 0,4m. Since the liquid surface reflects well when measuren the liquid level, after the sound pulse eited by the ultrasonic liquid level gauge is reflektiraju by the the liquid surface, the echo will be reflected back to the liquid surface after reaching the transdder (or probe) surface, and It is reflected back to the transducer again and received, and the echo at this time is the secondary echo. If the reflection conditions are good, multiple echoes (multiple round-trip echoes) may also be received.