Table of Contents
Magnetic level sensors are widely used in industrial applications to measure liquid levels accurately. Proper calibration ensures reliable readings and optimal performance. Several calibration techniques are employed depending on the application and sensor type.
Zero and Span Calibration
This method involves adjusting the sensor to match known reference points. Zero calibration sets the sensor reading at a known empty level, while span calibration aligns the sensor output with a known full level. These adjustments are typically performed using calibration tools or reference tanks.
Comparison with Reference Standards
Calibration can be performed by comparing the sensor’s output with a certified reference standard. This process involves placing the sensor in a controlled environment with known liquid levels and recording the readings. The differences are used to adjust the sensor’s output accordingly.
Field Calibration Techniques
Field calibration allows for on-site adjustments without removing the sensor. Techniques include using portable calibration devices or applying known reference points directly in the operational environment. This method is useful for maintaining accuracy during regular maintenance.
Applications of Calibration
Proper calibration of magnetic level sensors is essential in various industries, including chemical processing, water treatment, and oil and gas. Accurate measurements prevent overflows, ensure safety, and optimize process control.