LogTag Accuracy

How accurate is your LogTag?

LogTag temperature loggers are accurate enough for everything from food storage to vaccines, and there are options to confirm that accuracy if you ever need to.

If you’re using a temperature logger, it’s probably because you need to be sure. Whether it’s food, medicine, or anything else that shouldn’t get too warm or cold, the numbers need to be right.

That’s why accuracy matters – and it’s something LogTag does well.

What sort of accuracy are we talking about?

Most LogTag models have an accuracy of around ±0.5°C, depending on the temperature range and the model you’re using. For everyday use – like checking the temperature in a fridge, freezer or shipping box – that’s usually more than enough.

Some models are even more precise. If you’re working in areas like vaccine storage where the tolerances are tighter, there are options with even better specs and ways to double-check the readings.

But how do I know it’s accurate?​

Every LogTag comes with a certificate that says it meets the accuracy it promises. It’s called a Certificate of Compliance, and it’s valid for 12 months from when the logger was made.

That means if it’s been sitting on a shelf for a while before you buy it, the certificate might be getting close to the end of that 12 months – or it might have expired. LogTag labels each unit with the manufacturing date so you can check where you’re up to.

Can I get a fresh certificate?

Yes. If you’re in a setting where accuracy is critical – like when you’re storing vaccines – you can choose to buy a logger that comes with a recent Certificate of Accuracy instead. This is a more thorough document that shows the unit was calibrated and tested individually. It’s a good idea for compliance-heavy industries.

There’s also the option to get your LogTag recalibrated later down the track.

In short

LogTag temperature loggers are accurate, reliable, and built to do the job right. For most people, the standard setup is fine. But if you’re in a situation where the numbers really matter – like with vaccines or regulated goods – there are options to give you that extra level of confidence.

[remotepage page="shipping-insurance.html"]
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