LogTags for Refrigerated Transport

USB LogTags for refrigerated transport

Placing a LogTag temperature logger in with your shipment will record the temperatures experienced inside the trailer throughout the journey.

Why USB LogTags are perfect for refrigerated transport companies

Simply include this temperature logger with your shipment to track the temperature of your goods throughout the journey.

At the destination, the LogTag can be inserted into any Windows PC to download a comprehensive PDF report of the temperature data, including a colour-coded graph, giving your customer an instant confirmation of food safety.

Refrigerated Truck

Easy to configure to suit your operation

No additional reader is required to use this model. Simply insert it into any free USB port on a Windows PC. The software to configure the LogTag is free to download and very easy to use. It will run on any modern Windows PC. We have easy-to-follow instructions on how to configure the logger and phone support for the life of the product.

The LogTag can be configured to record at set intervals – we recommend taking a reading every 5 minutes.

You can set a minimum and maximum temperature range. For frozen goods, we recommend setting the minimum to -25°C and the maximum to -10°C. For refrigerated goods, use a minimum of 0°C to 5°C. It is possible to have the LogTag show an alert only if the temperature is outside these ranges for a number of consecutive readings, which allows for a short fluctuation. If an alert is triggered, the red LED light on the front of the LogTag will begin to flash.

The LogTag has a STOP button on the front that ends logging. It is possible to disable this button during configuration, meaning that logging cannot be accidentally or intentionally stopped by anyone other than your admin staff.

The LogTag can be configured to stop recording when its memory is full, rather than overwriting the oldest readings. This means there is no hurry to get the LogTag back to base to download data. The data from the journey will not be overwritten.

The LogTag can be started as soon as it is configured or set to start later, either by pushing the START button or automatically at a particular date and time.

Easy to use for admin staff and drivers

There is an optional wall mount that allows the LogTag to be placed in a convenient and consistent location inside the trailer. The mount comes with a double-sided adhesive mounting block, but could also be screwed to the trailer wall if required.

The driver can press the START/MARK button when they leave the departure point and again when the goods are delivered, as well as at any other points on the journey that the trailer was accessed.

Pressing this button will place reference mark on the graph.

At the destination, the driver can take the LogTag and place it into the customer’s PC. The LogTag will appear on the PC as a drive (like inserting a USB flash drive). The drive will have one file – a PDF report of the data – that can be copied to and viewed on the customer’s computer, giving an instant affirmation that the goods they received were in the correct temperature range for the entire journey.

Back at base, the data can be downloaded again and archived and the LogTag reset for its next assignment in under a minute.

If the LogTag is not to be used for a while, it can be hibernated (switched off) to prolong battery life.

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Latency explained

What is latency?

Latency, when it comes to temperature logging, refers to the delay between a change in temperature and when that change is detected and recorded by the logger. This delay can be due to the sensor’s design, the materials it’s placed in, or the logging interval. While it might sound like a disadvantage, latency can actually serve a useful purpose in certain environments—particularly where short-term temperature spikes are common but not harmful.

For example, in a busy commercial fridge, the temperature may briefly rise every time the door is opened. A logger with high latency won’t immediately react to these short fluctuations, helping to avoid unnecessary alarms or false data indicating a problem when there isn’t one. In these cases, a slight delay in response acts like a filter, focusing attention on real issues—such as prolonged exposure to unsafe temperatures—while ignoring the everyday ups and downs that don’t affect product quality or safety.

Differrnt connections

Connecting your logger

Depending on the type of logger you have, connecting your logger to your PC means either:

  • inserting into the Reader,
  • plugging it into a USB port, or
  • connecting it via a USB cable.
comparing gen1 and gen 2

What's so good about USB?

First Generation LogTags use a separate Reader (sometimes called a dock) for configuration and for downloading recorded data. 

The Second Generation loggers only require a USB port or cable. Apart from saving the cost of the Reader, this makes them much better suited for shipping, because the recipient doesn’t need a LogTag Reader to download a report about the shipment’s journey.

comparing gen1 and gen 2