LogTag devices can record temperature data even if the “Start” button isn’t pressed – thanks to the pre-start logging feature.
When configured for push-button start via LogTag Analyzer, the logger typically begins recording only after the user presses the “Start” button – usually at the time the device is placed with the goods. However, if the button is not pressed, the logger will still capture data in pre-start mode. These readings are accessible through LogTag Analyzer just like standard logs.
Pre-start logging can be enabled or disabled during configuration. Importantly, pre-start readings do not count toward the total number of configured readings, and cannot be used to extend the logger’s memory capacity.
If the logger is set to record until its memory is full and pre-start is enabled, any pre-start data will be overwritten once the “Start” button is pressed and the logger completes its full logging cycle. This ensures that the primary data set has full access to the device’s memory.
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.
Depending on the type of logger you have, connecting your logger to your PC means either:
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.
