Measurement and traceability5 / 39

Track plates separately from containers. Compare delivered, left at branch, collected and depot-received counts by type.

Before opening, record identity, arrival time, external condition and seal; keep product measurement and equipment inspection on separate lines.

Coverage, battery life and cost depend on device and site conditions. Compare technologies on real routes for data gaps and operating needs.

Do not attribute a weak route result directly to the plate; compare preparation, type, layout, product start and lid events.

Assess peak dispatch volume alongside measured cycle time; count containers in transit and processing separately.

Do not treat successful deliveries as savings; establish comparable loss data for the same product and route.

An absent record does not prove washing was skipped; compare run, shift and area traces, and document what remains uncertain.

Divide relevant period costs by completed deliveries meeting the defined service criteria in that same period.

Do not equate a temperature record with a product quality decision; document batch, start, route and delivery observations together.

A passive system runs no unit on the vehicle, yet it is not energy-free: plates are frozen at the depot and boxes are washed and returned. The comparison is made on the same delivery service.

Record product and box starting readings with separate times and methods; route pre-dispatch differences through the approved acceptance process.

Separate event times from arrival until cold-area entry to distinguish receiving delays from driving time.

Check rack arrangement against plate and freezer instructions. Record readiness and energy for the same batch to compare positions.

A blank display does not mean the container cannot hold cold, but it cannot prove that it did. For quick-frozen food a recording device is a legal requirement; for other loads the buyer's contract decides.

Count repeats by container and part ID, work out the rate within a set follow-up period, then look for the cause.

A rejection closes under one code. Put the legal temperature limits next to the appointment and door-opening times and you can see where the loss actually happened.