Inside a DCC: Anatomy of the PTB v3.3.0 Schema
A block-by-block tour of the PTB DCC XML schema v3.3.0: administrative data, measurement results, D-SI units, and the signature that makes it trustworthy.
Tag: calibration traceability
Push-Button Metrology on the Floor: Who Owns the Record?
At-line CT and smart gauges move measurement out of the lab. Here's who must own their calibration record, due date and traceability — before the audit.
40 Identical Micrometers: Bind Records to the Serial
You standardized on identical micrometers. When a recall asks which unit measured the part, model-level records can't answer. Fix it at the serial.
90 Days to Your Q4 Surveillance Audit: Calibration Prep
A 90-day, auditor-grade calibration checklist for Q4 surveillance: overdue status, traceability, uncertainty, as-found/as-left, retention — no scramble.
Out-of-Tolerance Gauge Recall: The Impact Assessment
A gauge fails as-found at recalibration. Now prove which parts it touched — the out-of-tolerance impact assessment auditors expect, spreadsheets can't.
The False-Overdue Trap in Calibration Recall
The certificate came back but the due date didn't. How false-overdue flags erode trust in your recall list — and how to close the gap before an audit.