Features of magnetostrictive level gauges compared to other level gauges

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Magnetostrictive level gauges have many advantages in use: 1. They have a large measurement range – 9.1 meters for the rigid rod type, and up to 18 meters for the flexible cable type – which is sufficient for most measurement needs. 2. High measurement accuracy. It can reach up to 0.01% FS (full scale), with a nonlinear accuracy of less than 0.01% FS and a repeatability accuracy of less than 0.001% FS. Among the existing level measurement instruments, only servo-type, radar-type, and fiber-optic-type level meters can achieve a measurement accuracy in the millimeter range. 3. The entire transmitter of the measuring instrument is sealed within a protective sleeve, with its sensor elements being in no contact with the liquid being measured. Although the magnetic float moves continuously during measurement, it does not cause any wear on the sensor; as a result, it offers reliable performance and a long service life. Its fault-free operation time can reach up to 23 years, making it suitable for various harsh environments. 4. Since waveguides are used to transmit ultrasonic waves, the mist and vapor in the medium, as well as foam on the surface of the medium, do not have a significant impact on measurement accuracy. 5. It enables multi-point, multi-parameter level measurement, and features unique advantages such as self-correction and maintenance-free operation. It offers high safety, as magnetostrictive level sensing eliminates the need to manually open the tank lid, thereby avoiding the safety risks associated with manual measurement. 6. Installation, debugging, and calibration are simple and convenient. Once the installation on-site is confirmed, it is possible to accurately determine the positions on the measurement protection tube corresponding to the zero point and full scale of the liquid level (or interface). Power can be applied for testing prior to installation; the float is placed at the zero point and full scale positions respectively, with the zero and full scale outputs set at 4mA and 20mA. There is no need to adjust or calibrate by raising or lowering the liquid level (or interface). Since the output signal represents the absolute position, rather than a proportional value or a signal that requires further processing, there is no issue of signal drift or changes in value. Therefore, there is no need for regular calibration and maintenance like with other types of level sensors, **which saves labor and resources and brings great convenience to users.