工作时，高频脉冲声波由换能器(探头)发出，遇被测物体(水面)表面被反射，折回的反射回波被同一换能器(探头)接收，转换成电信号。 When the ultrasonic level gauge works, high-frequency pulse sound waves are emitted by the transducer (probe). When the surface of the measured object (water surface) is reflected, the returned reflected echo is received by the same transducer (probe) and converted into an electrical signal. .
The time between the sending and receiving of pulses (moving time of the sound wave) is proportional to the distance from the transducer to the surface of the object. The relationship between the distance S of sound wave transmission and the speed of sound C and the time T can be expressed by the formula: S = C = T / 2 installation
The ultrasonic liquid level timing must consider the blind spot problem of the ultrasonic liquid level gauge. 的量程时，必须留出50公分的余量。 When the liquid level enters the dead zone, the ultrasonic transmitter cannot measure the liquid level, so when determining the range of the ultrasonic level meter , a margin of 50 cm must be left.
安装时，变送器探头必须高出最高液位50公分左右。 When the ultrasonic level gauge is installed, the transmitter probe must be about 50 cm above the maximum liquid level. Only in this way can the accurate monitoring of the liquid level and the safety of the ultrasonic level gauge be ensured. In actual use, because when installing
After careful consideration, the level gauge was flooded with water, causing the level gauge to be completely damaged. Features: low price, small size, light weight, can be used in food, chemical, semiconductor and other industries for liquid and bulk solid non-disconnected level measurement, can be used for
Remote level monitoring and pump control mechanical installation should pay attention to: the installation should be perpendicular to the surface of the test object, to avoid measuring foam-like objects, avoid installing the distance from the surface of the measurement object is less than the distance of the blind zone (blind zone:
There is a standard, which is known with the product.) It should be considered that the beam avoids the shade material and does not meet the mouth and the container wall. When detecting large solid objects, the orientation of the probe should be adjusted to reduce measurement errors.