How does the temperature compensation and offset cancellation work?
Does it work with magnets which have a temperature drift of 0,12%/°C?
Julian,
The temperature compensation of this device aims to keep the operating thresholds flat across operating temperature.
However, as you point out NdFeB type magnets typically degrade in strength by about -0.12%/°C. This means that at higher temperatures the magnet will be weaker, while the sensor remains unchanged. As a result, you would want to ensure that when designing your system that you consider the strength of the magnet across temperature. You will want to be sure that at hot temperatures, the magnetic field at the trigger point is greater than BOP Max, and that at cold temperatures that the magnetic field at the release point is less than BRP Min.
the offset correction is related to how the Hall-effect sensor is biased and sampled and aims to eliminate any electrical bias from skewing the actual position of the BOP and BRP thresholds for the device.
Thanks,
Scott
