|Temperatures generally used to be recorded for use as evidence in the event of a damage claim, mainly with circular temperature charts, which generally cover a period of thirty-one days (see Figure 17). Partlow is one of the main manufacturers of this type of recorder, which is why the charts are also frequently called Partlow charts. The return air temperature is generally recorded on these charts.
Since these circular temperature charts now no longer conform to EU standards, the recorders are rarely installed in new containers, especially as they also represent a significant cost factor.
Due to the progress made in data technology, all new controllers are able to store their measured values on data loggers. The storage period is more than one year. The main benefit of this type of data logger is that it records not only the return air temperature but also the supply air temperature and USDA temperatures. In addition, they can register alarms, on and off times and manual intervention.
One disadvantage of the data loggers is that they only supply discrete values and do not provide the crew with a quick overview of the history of a particular refrigerated cargo transport. In addition, it is often difficult in the event of a damage claim to localize the container and have the contents of the data logger read out.
||Click on the graphic to enlarge.
Example of a
Partlow temperature chart
Example of a
Click on the graphic to enlarge.