Level switch wholesale manufacturer 2022? Working principle: Tube in the liquid level meter has a magnetic float, float design, according to the proportion of medium float magnet steel and container liquid level at the same level, wholesale liquid level gauge in a semiconductor magnetel liquid level gauge sensor LED display scale, and orderly arranged from top to bottom, and LED module corresponding to the magnetic field magnetic sensor, the magnetic semiconductor, triggering the corresponding digital circuit, liquid level above the red LED display, The LED below the liquid level gauge is displayed in green, the red in gas phase, and the green in liquid phase. The red-green junction is the actual liquid level in the container. Read even more information at level switch.
In addition, some silos in cement plants are very high, such as homogenizing silos of 50cm. It takes time and energy to board high silos to debug radar, so it is recommended to choose HART handheld operators that can be debugged remotely in the central control room. In the central control room, the range and other basic parameters can be set, and the radar echo waveform can be observed, and the waveform can be used for remote diagnosis and debugging, greatly reducing the on-site work intensity of the staff, to avoid the risk of climbing operation. The smart radar level gauge commonly used at present also has a function similar to “driving recorder”, that is, when the material surface mutation occurs on the scene, it can capture the radar echo waveform at that time, which is very useful for debugging the silo under complex conditions.
Application conditions, application conditions generally include calm liquid level, slightly fluctuating surface, turbulent surface, with stirring, with foam and so on. The more complex the conditions, the more interference echoes, and the smaller the actual measured range. In a complex environment, a precision radar with strong ability to deal with interference echoes or an antenna with a larger size should be selected.
Ground interference refers to one of the two output ends of the radar level gauge (or compensation line), and its AC voltage to the ground is called the ground interference voltage. This disturbance is also known as longitudinal, in-line mode or in-line state disturbance. Generally speaking, the interference voltage to ground can reach several volts or even more than 100 volts. The above is the interference of the radar level gauge we discussed. When we install or use the radar level gauge, we can also determine whether your use environment will cause these interferences to the level gauge according to the above situation. If these conditions exist, anti-interference measures must be taken to ensure that the level gauge can serve you better.
Working principle: Working principle of radar level gauge: UHF electromagnetic waves are transmitted to the liquid level of the container under test through the cable or antenna. When the electromagnetic wave touches the liquid level and is reflected back, the instrument detects the time difference between the initial wave and the echo, thereby calculating the liquid level height. Select guided wave radar or airborne radar according to the dielectric constant and measurement length of the measured medium.
So what are the installation technical requirements for radar water level meters? The installation of the radar water level meter must be vertical to the object to be measured; there should be no obstructions between the measured object and the radar water level meter, otherwise it will affect the reflection of radar waves, that is, affect the measurement accuracy; the center of the radar water level meter is far from the shore of the water body. The distance must be greater than the radius of the transmitting beam, otherwise the measurement accuracy will also be affected; the installation cantilever bracket of the radar water level meter must be firm, and cannot be shaken up and down; in order to protect the radar water level meter, the water level meter can be installed on the cantilever bracket. Iron box, put the radar water level meter probe.
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