Burn in Hours That Remove the Steepest Early Drift
Thermal burn-in under active electrical bias removes early non-linear drift, locking in long-term calibration stability before sensors reach the field.
Residual Drift Upper Specification Limit
Tolerance Boundary
Maximum permissible uncompensated signal movement defines the threshold between acceptable and non-conforming sensor stability during qualification testing. The setting of a residual drift upper specification limit bounds the allowable baseline change remaining after standard thermal and polynomial compensation algorithms have been applied. Exceeding this boundary indicates excessive internal structural instability or improper algorithm fitting.
The scope of this limit applies to corrected output signals, excluding raw uncompensated transducer drift.
Error Threshold
Compensation algorithms reduce raw sensor drift by modeling predictable temperature and pressure responses, leaving a small residual drift component. If internal material relaxation or dielectric charge trapping exceeds normal predictable levels, the residual drift magnitude increases beyond allowable operational envelopes. Setting a strict upper limit ensures that downstream measurement systems will not experience uncompensated offset errors that exceed system-level error budgets.
Components exceeding this threshold during screening are rejected prior to final assembly.
Compliance Evaluation
Screening algorithms calculate residual drift values across full temperature range testing cycles. When a device breaches the residual drift upper specification limit, automated test equipment flags the component for rejection or re-characterization.
Certification Standard
Quality assurance standards document specific numerical limits for residual drift across defined operating temperature bands. Quality records capture individual sensor drift figures alongside statistical pass rates for each production batch. Calibration certificates attest that verified units operate strictly within mandated residual drift limits.