What is Linearity Error?
LinearityNon-LinearitySensor ErrorCalibrationCurve
What is Linearity?
In an ideal sensor, as the input increases, the output should increase proportionally (Linear Relationship).
- 0 kg load -> 0 mV
- 50 kg load -> 5 mV
- 100 kg load -> 10 mV expected.
If the sensor outputs 4.8 mV instead of 5 mV at 50 kg load, there is a linearity error. The sensor's response is not a straight line, but a slightly curved one.
Solution
Low-quality sensors have high linearity errors. Amazeng GDT Digital Transmitters mathematically correct this curvature in the sensor using multi-point calibration, minimizing the error.