As anyone who is in charge of a premises which stores food will know, every location is different. When it comes to monitoring conditions then, careful selection is essential to make certain you are using the correct equipment to match the specific requirements of your location. This type of precision is vital, as we’ve seen time and time again, when it comes to the cold chain one slip up can be incredibly costly.
In order to help with this testo have put together a very short overview of the types of requirements for Freezers, cold stores, and store rooms in general.
When monitoring conditions in a freezer, as well as measuring the temperature of the product itself, keeping tabs on the air temperature within the freezer is also important. It is advisable to measure this in the vicinity of the air recirculation using a suitable air temperature probe. This is where the air is warmest. If the air here is the correct temperature (for example -18 °C), it is safe to say the freezer is working properly.
Monitoring conditions is of course essential for cold storage
For simple monitoring it is usually sufficient just to place a data logger with an internal sensor in with the frozen goods. If you’re planning on monitoring a freezer over a longer period of time however, it would be advisable to use a data logger with several input channels. One probe measures the air temperature at ground level, another at the maximum load line, while a third measures the air temperature at the air recirculation.
If you’re monitoring a cold storage area or room, as well as overseeing the air temperature and product temperature (core temperature of the chilled goods), the use of a data logger is highly recommended. In fact, for cold and deep-freeze storage areas which are larger than 10 m³, data recording is even compulsory. According to EN 12830, 15 minutes should be considered a suitable measurement interval.
You can set the limit values to the maximum acceptable temperature (-18 °C, -15 °C). If a reading outside the allocated threshold is detected you will receive an alarm (via email, SMS, or App) immediately. Should an incidence like this occur you can then you can use the analysis features to determine exactly when the measurement data strayed over the limits and for how long.
If you’d like some more information on testo temperature monitoring solutions or you’ve got a requirement you’d like to discuss, please feel free to reach out to us. You can either send us a message, leave a comment, visit our food safety homepage www.testolimited.com/food-safety or give us a call on 01420 544433 and we’ll be more than happy to help.