Differences Between Velocity-Responsive and Flux-Responsive Magnetic Scale Sensors

Velocity-responsive and flux-responsive magnetic scale sensors are two common types, and they differ in operating principle and application.

Velocity-responsive sensors measure signals generated when magnetic markers on the scale pass the sensor head; this produces a velocity-related signal. These sensors suit applications that require real-time monitoring of position and speed, such as machine-tool processing and motion control. They offer high precision, resolution, and fast response.

By contrast, flux-responsive sensors measure changes in magnetic flux to detect position and movement. They are more sensitive to field variations and are suitable for applications demanding high sensitivity and stability, such as medical or aerospace equipment. Flux-responsive sensors typically exhibit strong anti-interference capability and long service life.

Additionally, velocity-responsive sensors often require external processing to derive position from velocity signals, while flux-responsive sensors can output position directly, simplifying system design. Velocity-responsive types may face delays at very high speeds, whereas flux-responsive sensors can better handle high-speed demands.

In summary, the two sensor types differ in principle, application scenarios, and performance characteristics. Choose the appropriate magnetic scale sensor based on application needs and environmental conditions to ensure accurate and reliable detection.