Liquid level sensors are often used in monitoring and control systems; petrochemical, environmental protection, water pipe network monitoring, reservoir high and low liquid level monitoring, power station operation inspection, locomotive braking system; thermal power unit; light industry, mechanical metallurgy; building automation, constant pressure water supply System; other automation and inspection systems; industrial process inspection and control; laboratory level calibration. The application of ordinary liquid level sensors is very limited. With the rapid development of wireless technology and the requirements of customers, wireless level sensors have been rapidly developed and are being applied in various industries.
The principle of wireless liquid level sensor measurement is to use the transmission and reception of ultrasonic waves to calculate the propagation distance according to the time of ultrasonic propagation. There are two practical methods of ranging. One is to transmit at one end of the measured distance, the direct wave is received at the other end, and is suitable for the height meter. The other is the reflected wave that is received after the reflected wave is reflected by the object. Way, suitable for rangefinder. This design uses a reflected wave method. The most widely used wireless level sensor is the radar radio level sensor.
Radar radio level sensors are a commonly used measurement technique and have a variety of measurement values. It is precisely because of these advantages that radar wireless level sensors are well used in many harsh conditions and play an important role. However, there are advantages in it. There are also some shortcomings. For example, its biggest disadvantage is that it is not suitable for use in medical production towels, at least not suitable for use in disinfection equipment. The reason is due to the structural form of the radar antenna. When the radar radio waves are used for deletion, the radar transmitting antenna emits radio waves to delete the liquid level in the container, and the radio coupling signal is returned to the receiving antenna of the radar. The high-frequency radio signals emitted by radar radio sensors are up to 26 GHz, and the speed of propagation in light and air is the same as the speed of light. The time difference of the radio wave received from the 5II to the reflection is proportional to the level of the liquid level in the container. Until now, the antennas used in radio radar sensors have been flared or whip. From the point of view of hygienic disinfection, the antenna of this structural shape is very raw, at least very unclean. Due to the small angle and distance between the antenna rods, it is easy to collect dust and dirt. It is impossible to comply with the CIP cleaning standard point and it is impossible to perform SIP-level disinfection, or the cost is too high.
With the further development of future technologies, these difficulties will be solved, which will enable the wireless liquid level sensor to be further developed and applied.
Liquid level sensors are often used in monitoring and control systems; petrochemical, environmental protection, water pipe network monitoring, reservoir high and low liquid level monitoring, power station operation inspection, locomotive braking system; thermal power unit; light industry, mechanical metallurgy; building automation, constant pressure water supply System; other automation and inspection systems; industrial process inspection and control; laboratory level calibration. The application of ordinary liquid level sensors is very limited. With the rapid development of wireless technology and the requirements of customers, wireless level sensors have been rapidly developed and are being applied in various industries.
The principle of wireless liquid level sensor measurement is to use the transmission and reception of ultrasonic waves to calculate the propagation distance according to the time of ultrasonic propagation. There are two practical methods of ranging. One is to transmit at one end of the measured distance, the direct wave is received at the other end, and is suitable for the height meter. The other is the reflected wave that is received after the reflected wave is reflected by the object. Way, suitable for rangefinder. This design uses a reflected wave method. The most widely used wireless level sensor is the radar radio level sensor.
Radar radio level sensors are a commonly used measurement technique and have a variety of measurement values. It is precisely because of these advantages that radar wireless level sensors are well used in many harsh conditions and play an important role. However, there are advantages in it. There are also some shortcomings. For example, its biggest disadvantage is that it is not suitable for use in medical production towels, at least not suitable for use in disinfection equipment. The reason is due to the structural form of the radar antenna. When the radar radio waves are used for deletion, the radar transmitting antenna emits radio waves to delete the liquid level in the container, and the radio coupling signal is returned to the receiving antenna of the radar. The high-frequency radio signals emitted by radar radio sensors are up to 26 GHz, and the speed of propagation in light and air is the same as the speed of light. The time difference of the radio wave received from the 5II to the reflection is proportional to the level of the liquid level in the container. Until now, the antennas used in radio radar sensors have been flared or whip. From the point of view of hygienic disinfection, the antenna of this structural shape is very raw, at least very unclean. Due to the small angle and distance between the antenna rods, it is easy to collect dust and dirt. It is impossible to comply with the CIP cleaning standard point and it is impossible to perform SIP-level disinfection, or the cost is too high.
With the further development of future technologies, these difficulties will be solved, which will enable the wireless liquid level sensor to be further developed and applied.
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