Temperature sensor failure data gap

If a sensor goes silent mid-route, the time in between is unmeasured. Fill the gap with independent evidence such as a second logger, door events and product temperature at delivery, not with an estimate.

27 July 2026Updated 28 September 2026

Short answer

Write down the failure time and the last valid reading, mark the time in between as not measured, and do not complete the curve by estimate. Only independent evidence fills the gap: a second logger, door-opening events, product temperature measured at delivery. If gaps keep recurring on the same device, add a second logger to the route.

If a sensor goes silent mid-route, the time between the last valid reading and the first new record is unmeasured time. Drawing a line between the two points adds a measurement that is not in the record; write down the start and end time of the gap and mark it as not measured.

Only independent evidence fills the gap: a second logger, door-opening events, product temperature measured at delivery. The TİTCK Good Distribution Practice Guide requires that a medicine in transit be shown not to have been exposed to conditions that could damage its quality (section 10.1); without that evidence the load cannot be said to have stayed within limits.