LogTag data loggers are not rated for direct immersion in liquids. Placing a unit with internal sensors directly into a fluid can result in product failure and inaccurate readings. To address this, waterproof enclosures are available for specific models that use internal sensors. These housings provide a barrier against moisture and splashes, but it’s important to note that they increase thermal latency, meaning the temperature log will respond more slowly to changes.
For applications where liquid immersion is necessary, several LogTag models include an external probe sensor. These sensors feature a stainless steel tip, which is safe for direct contact with liquids. However, the join between the probe tip and the cable is not waterproof. This section must remain dry, as fluid ingress can damage the sensor or introduce measurement errors.
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.
