CCT Quality Management & Documentation Flashcards
6 cards from real CCT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCT Quality Management & Documentation flashcards as text
What is 'measurement uncertainty' as used in calibration documentation?
Answer: A quantified doubt about the validity of a measurement result
Measurement uncertainty is a parameter that characterizes the dispersion of values that could reasonably be attributed to the measurand, quantifying the doubt about the measurement result.
Which US federal agency provides the national measurement standards that calibration traceability chains reference?
Answer: NIST
The National Institute of Standards and Technology (NIST) is the US federal agency responsible for maintaining national measurement standards to which calibration traceability is established.
What is the purpose of a 'calibration interval'?
Answer: The scheduled period between successive calibrations to ensure ongoing accuracy
A calibration interval defines the maximum time between calibrations, determined by factors such as instrument stability, usage conditions, and required measurement accuracy.
In a quality management system, what is the role of an 'audit trail' in calibration records?
Answer: To provide a chronological record of changes to documents and data
An audit trail in calibration records provides a chronological, tamper-evident history of all changes to calibration data and documents, supporting accountability and traceability.
What does a 'Test Uncertainty Ratio' (TUR) of 4:1 mean in calibration quality standards?
Answer: The reference standard is four times more accurate than the device under test
A TUR of 4:1 means the measurement uncertainty of the reference standard is at least four times smaller than the tolerance of the device under test, providing adequate calibration confidence.
Which element is required on a calibration label affixed to calibrated equipment?
Answer: Calibration due date or next calibration date
Calibration labels must display at minimum the calibration date and the next due date so users can quickly determine if the instrument is currently within its calibration interval.