Calibration vs verification: Which statement is true?

Calibration vs verification: Which statement is true?

• A. Calibration checks tolerances
• B. Calibration adjusts to a standard
• C. Verification recalibrates
• D. Verification changes sensor range

Answer: (B)

Calibration is the process of aligning an instrument’s readings with a known reference by making adjustments. By comparing measurements to a standard and tuning the instrument, you bring its output to match the true value within the specified tolerance. That’s why stating that calibration adjusts to a standard is the right description. Verification, on the other hand, is a check to confirm that the instrument still reads within the allowed tolerances without making any adjustments. It’s about confirming performance, not changing the instrument. So calibration involves adjusting to a standard, while verification is about confirming accuracy remains within limits. The other statements mix up these roles: calibration isn’t merely checking tolerances, verification isn’t recalibration, and verification doesn’t change sensor range.

Calibration is the process of aligning an instrument’s readings with a known reference by making adjustments. By comparing measurements to a standard and tuning the instrument, you bring its output to match the true value within the specified tolerance. That’s why stating that calibration adjusts to a standard is the right description.

Verification, on the other hand, is a check to confirm that the instrument still reads within the allowed tolerances without making any adjustments. It’s about confirming performance, not changing the instrument. So calibration involves adjusting to a standard, while verification is about confirming accuracy remains within limits.

The other statements mix up these roles: calibration isn’t merely checking tolerances, verification isn’t recalibration, and verification doesn’t change sensor range.