What should you do if verification results show bias across the range?

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Multiple Choice

What should you do if verification results show bias across the range?

When verification results show bias across the range, it means the instrument consistently over- or under-reads throughout its entire measurement span. That signals a calibration or adjustment issue that needs to be found and fixed rather than ignored or treated with a quick fix. The best next step is to investigate the possible causes—calibration drift, misadjustment, or other factors affecting accuracy—and then take corrective action or recalibrate as needed. This approach targets the underlying problem, ensuring measurements align with true values across the full range and that verification confirms the fix. Replacing the instrument immediately isn’t necessary, since many biases can be corrected through proper investigation and calibration. Ignoring the bias, even if small, allows a systematic error to persist. Recalibrating without exploring the cause can mask underlying problems and may lead to the bias returning.

When verification results show bias across the range, it means the instrument consistently over- or under-reads throughout its entire measurement span. That signals a calibration or adjustment issue that needs to be found and fixed rather than ignored or treated with a quick fix.

The best next step is to investigate the possible causes—calibration drift, misadjustment, or other factors affecting accuracy—and then take corrective action or recalibrate as needed. This approach targets the underlying problem, ensuring measurements align with true values across the full range and that verification confirms the fix.

Replacing the instrument immediately isn’t necessary, since many biases can be corrected through proper investigation and calibration. Ignoring the bias, even if small, allows a systematic error to persist. Recalibrating without exploring the cause can mask underlying problems and may lead to the bias returning.

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