Cold-chain temperature monitoring

A temperature trace across one journey with the agreed range shaded, an excursion above the range, a door opening marked and a gap where no readings arrived.

• Within the agreed range. Most of the journey sits inside the range agreed for the cargo. The value of the record is that it is continuous, so an exception is visible against everything around it. Written example: Agreed range — 2 to 8 °C (example); Measurement point — Compartment sensor; Reading interval — Every 10 minutes.
• A reading crosses the threshold. The monitored point records a condition that needs review, and the configured alert reaches its recipients. The offered channels include SMS, email and WhatsApp, with the configuration and connectivity defined for your deployment. Written example: Peak reading — 11.4 °C (example); Duration above range — 38 minutes; Alert sent to — Driver, dispatcher, manager. Cargo disposition stays with the people authorised to make it. The record supports that decision.
• Check the surrounding events. Door information and refrigeration-power status help investigate the timing of a change. Location can be added through Hapis Nav fleet tracking so the same picture includes where the vehicle was. Written example: Door — Opened 11:58, closed 12:09; Refrigeration power — No change recorded; Follow-up — Delivery stop confirmed by dispatcher.
• A gap is not evidence. A missing update needs attention in its own right. A gap in the record is different from evidence that the temperature stayed within range, and the trace is drawn with a break rather than a line through it. Written example: Gap — 13:20 to 13:50 (example); Readings received — None in that interval; Checked — Device and connectivity. Sensor placement, checking and calibration all affect what a reading means.