Shop shorthand for the calibration due date, calculated from the last calibration date plus the assigned interval. Instruments past cal due are pulled from use, and grace periods are granted only through a formal extension signed by quality. The recall system usually flags items 30 days ahead so they can be swapped out without stopping production.
Cal due on the hipot tester is end of the month, get a loaner lined up.
Also heard as
- due date
- cal due date
- next due
Related terms
Cal sticker
The label on a calibrated instrument showing who calibrated it, when, and when the next calibration is due.
Calibration interval
The scheduled time between calibrations of an instrument, set to keep the chance of drifting out of tolerance low.
Recall
The system that schedules instruments back for calibration before their due date, and the act of calling them in.
Out of cal
Past its calibration due date, so the instrument is not approved for use regardless of how well it performs.