The difference between ultrasonic level meter and radar level meter
2024-05-06
Although the radar level meter and the ultrasonic level meter are both liquid level meters, both are non-contact measurement, and both are instruments for measuring liquid level, they are very different. The two have differences in characteristics, performance, application, working conditions and so on. Let's take a look at the detailed difference.
① Different working principles
Radar level gauges work by using an antenna system to send narrow microwave pulses down through the attachment to the surface of the measuring medium, where they are reflected back. At this time, the reflected pulse will be received by the antenna system again, and the antenna system will convert it into the liquid level signal and display it through precise calculation of the time difference between the back and forth.
The working principle of the ultrasonic level meter is a digital level meter controlled by a microprocessor. In the measurement, the ultrasonic pulse is emitted by the sensor (transducer), and the sound wave is received by the same sensor after being reflected by the liquid surface, converted into an electrical signal by the piezoelectric crystal, and the distance between the sensor and the measured liquid surface is calculated by the time between the transmission and reception of the sound wave.
② The temperature and pressure requirements of the medium on site are different
Whether the medium temperature at the working condition site is high temperature and whether the pressure is high pressure determines whether to choose radar level or ultrasonic level meter. First of all, the ultrasonic level meter can only be used in the atmospheric pressure field, and the temperature of the probe is not able to withstand high temperature basically not higher than 100 ° C, and the temperature and pressure of the field medium also have an impact on the ultrasonic speed. It is said that radar level meter is electromagnetic wave, so it will not be affected by vacuum, and the application range of medium temperature and pressure is very wide, which can meet the requirements of field parameters.
③ The measurement range is different
Ultrasonic level meter and radar level meter measuring range is different, radar level meter measuring range can reach 0-100 meters, and ultrasonic level meter measuring range can only meet 0-30 meters, can be selected according to the actual range of the liquid level sensor.
④ Difference in measurement accuracy
The accuracy of radar level meter is different from that of ultrasonic level meter. The accuracy of radar level meter is much higher than that of ultrasonic level meter. Therefore, the price difference between the two level gauges is also slightly higher.
⑤ Different installation positions
The installation method of the two is different, ultrasonic level meter is generally the use of scaffolding need a separate design pipeline, installation and maintenance will be more troublesome, radar level meter is the use of direct installation, is not required additional pipeline installation, so reduce the cost of measurement.
⑥ The difference in price
The price of ultrasonic level meter is more conventional, but it also depends on the process characteristics of each manufacturer and whether it is an imported brand. However, due to the structural design of the radar level meter is more complex and the measurement steps are more precise, so the price of the radar level meter is relatively high, especially when the user needs to have customized functions and other requirements, the price will be higher.
It can be seen that the radar level meter and ultrasonic level meter have their own advantages and disadvantages, the user should consider from many aspects when choosing the level meter, first of all, to meet the requirements of the working condition parameter specifications, in addition to the comprehensive cost budget, installation conditions and other factors scientific and reasonable selection of the level meter.
If you want to know more about the flow meter or flow meter selection, please consult the Aister flow meter manufacturer email: sales@aistermeter.com for help.
① Different working principles
Radar level gauges work by using an antenna system to send narrow microwave pulses down through the attachment to the surface of the measuring medium, where they are reflected back. At this time, the reflected pulse will be received by the antenna system again, and the antenna system will convert it into the liquid level signal and display it through precise calculation of the time difference between the back and forth.
The working principle of the ultrasonic level meter is a digital level meter controlled by a microprocessor. In the measurement, the ultrasonic pulse is emitted by the sensor (transducer), and the sound wave is received by the same sensor after being reflected by the liquid surface, converted into an electrical signal by the piezoelectric crystal, and the distance between the sensor and the measured liquid surface is calculated by the time between the transmission and reception of the sound wave.
② The temperature and pressure requirements of the medium on site are different
Whether the medium temperature at the working condition site is high temperature and whether the pressure is high pressure determines whether to choose radar level or ultrasonic level meter. First of all, the ultrasonic level meter can only be used in the atmospheric pressure field, and the temperature of the probe is not able to withstand high temperature basically not higher than 100 ° C, and the temperature and pressure of the field medium also have an impact on the ultrasonic speed. It is said that radar level meter is electromagnetic wave, so it will not be affected by vacuum, and the application range of medium temperature and pressure is very wide, which can meet the requirements of field parameters.
③ The measurement range is different
Ultrasonic level meter and radar level meter measuring range is different, radar level meter measuring range can reach 0-100 meters, and ultrasonic level meter measuring range can only meet 0-30 meters, can be selected according to the actual range of the liquid level sensor.
④ Difference in measurement accuracy
The accuracy of radar level meter is different from that of ultrasonic level meter. The accuracy of radar level meter is much higher than that of ultrasonic level meter. Therefore, the price difference between the two level gauges is also slightly higher.
⑤ Different installation positions
The installation method of the two is different, ultrasonic level meter is generally the use of scaffolding need a separate design pipeline, installation and maintenance will be more troublesome, radar level meter is the use of direct installation, is not required additional pipeline installation, so reduce the cost of measurement.
⑥ The difference in price
The price of ultrasonic level meter is more conventional, but it also depends on the process characteristics of each manufacturer and whether it is an imported brand. However, due to the structural design of the radar level meter is more complex and the measurement steps are more precise, so the price of the radar level meter is relatively high, especially when the user needs to have customized functions and other requirements, the price will be higher.
It can be seen that the radar level meter and ultrasonic level meter have their own advantages and disadvantages, the user should consider from many aspects when choosing the level meter, first of all, to meet the requirements of the working condition parameter specifications, in addition to the comprehensive cost budget, installation conditions and other factors scientific and reasonable selection of the level meter.
If you want to know more about the flow meter or flow meter selection, please consult the Aister flow meter manufacturer email: sales@aistermeter.com for help.
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