One interval may not suit every instrument
When setting calibration intervals, consider manufacturer recommendations, applicable customer or regulatory requirements, usage frequency, environmental conditions and the impact of the measurement together.
Use historical results
Previous calibrations, intermediate checks, faults and maintenance records provide information about equipment stability. Use this evidence to justify shortening or extending the interval.
Assess unusual events independently of the schedule
After impact, overload, repair or suspicious results, review whether the equipment can be used without waiting for the scheduled date.
Keep the decision visible and traceable
Record the interval, rationale, owner and review conditions. Link follow-up dates to an inventory that teams can access.
Further reading
For metrology concepts, consult JCGM publications, and for calibration intervals, consult ILAC guidelines . This article provides general information; assessments specific to your equipment and process must consider the applicable requirements.