LogTag data loggers are built to deliver accurate, reliable readings straight from the factory. They’re designed to maintain their published accuracy throughout their typical product life, provided they’re used within the environmental conditions specified in the product documentation.
For most users, temperature calibration is unnecessary. If you can show that your logger is inaccurate, we won’t ask you to recalibrate it – we’ll replace it.
Calibration is the process of comparing a logger’s readings against a certified reference, typically inside a temperature chamber. Adjustment (sometimes called recalibration) modifies the logger’s readings to match the reference instrument.
This process should only be considered if:
You’ve tested the logger in a certified temperature chamber and found a measurable error.
A third party requires calibration for compliance.
Unless you have access to specialised equipment and expertise in thermal and metrological calibration, we strongly recommend against attempting any form of recalibration. Improper calibration can compromise accuracy and invalidate performance claims.
If you believe your logger is not performing accurately, please contact us or your local distributor. We’ll work with you to resolve the issue – and in most cases, that means replacing the unit rather than recalibrating it.
Humidity sensors are more sensitive to environmental conditions. If you’re using a LogTag with RH measurement, and precise humidity recording is vital to you, we recommend recalibrating every 6–12 months, depending on the exposure and application. This should only be done by professionals with the appropriate equipment and expertise.
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.
