What are the limitations of automatic compensation technology?

Automatic compensation technology has severe application limits and can only correct sluggish and minute zero-point drift. The following four elements mainly represent these limitations:

1. Sensitivity deviation cannot be corrected; only zero-point drift can. The sensitivity decline brought on by aging cannot be addressed by automatic compensation, which merely modifies the offset of the zero-pressure output. As the diaphragm ages and corrodes, the change in sensor output at the same pressure will progressively diverge from the factory value. This change in physical features cannot be detected or corrected by automatic compensation, which eventually results in inaccurate pressure measurements and lowers the quality of the final output.

2. It just delays deviation and doesn't address the underlying source of the issue; it can't stop aging. Automatic compensation cannot fix irreversible sensor deterioration like diaphragm corrosion, seal aging, and component fatigue because it is merely a software-level output modification. It merely extends the time before the deviation beyond the restriction, and eventually it will still surpass the limit. The divergence will continue to gradually increase over time. The sensor cannot be replaced by it.

3. Errors may accumulate, and a protracted lack of calibration may result in a loss of control.

Every day, automatic compensation makes adjustments based on the prior deviation. Even a daily inaccuracy of 0.01mA might add up to 0.3mA after a month, which is equivalent to 0.5%FS and is already regarded as serious drift. Accumulated mistakes can only be found by manual calibration; automatic compensation is unable to do so.

4. Managing rapid drift failure; if aging gets worse, direct failure.

The drift rate increases and the deviation can change significantly in a matter of days if the sensor has reached a severe aging stage. Automatic compensation's daily correction frequency is unable to keep up with the rate at which the deviation is increasing, which results in direct failure and an inability to keep the deviation within allowable bounds.

In conclusion, automatic compensation is a labor-saving and time-saving daily maintenance tool that can be used as a temporary solution for severely old sensors that need to be replaced or for new or slightly aged sensors to lower the frequency of calibration. It cannot, however, take the place of routine calibration and eventual replacement.