Monitoring food temperature and humidity with a data logger system

In order to guarantee quality and shelf-life, and to fulfil legal hygiene standards, foods must be stored and processed under constantly impeccable climatic conditions. The expenditure in terms of time, costs and effort for the permanent and reliable monitoring of parameters such as temperature and humidity is often disproportional to the benefits it is intended to provide.

Testo has re-thought temperature and humidity monitoring and considerably simplified automated measurement data recording. With the data logger system testo Saveris 2, you have all relevant ambient conditions in refrigerated and deep-freeze rooms, refrigerated cabinets, and in food transport under control. Simple, any time and anywhere.


The challenge.

Today's consumers place high demands on quality, but at the same time, they are extremely price-conscious. They want to be able to trace the origin of the meat they have purchased. For fruit and vegetables, regionality counts as much as freshness. Traditional baked goods are just as much in demand as cakes baked according to newer recipes. And in fine cooking, the flavour and enjoyment of the dishes are in focus, as well as high-quality ingredients.

For master bakers, butchers or chefs, it goes without saying that only goods of impeccable quality are sold. However, they must guarantee the safety of the products they offer with the same degree of commitment as they do quality. The greatest threat is that of contamination by dangerous germs. Bacteria reproduce by division – in insufficient refrigeration, their numbers double every twenty minutes, quickly reaching a level that is damaging to health.

In order to eliminate risk factors, food businesses must follow a HACCP concept. National and international laws and standards prescribe adherence to the cold chain. Foods must be stored continuously at defined upper and lower temperature limit values, typically between -30 °C and -18 °C or +4 °C and +8 °C.

In food production, the automated monitoring of temperature and humidity must be ensured.  In storage too, correct ambient conditions must be guaranteed so as not to endanger the shelf-life of the products. 


Everything wasn't better in the good old days

Master butchers, bakery owners or caterers who wanted to monitor temperature and humidity safely, usually chose a data logger or a measurement data monitoring system.

Conventional data loggers must be read out singly. One person is always responsible for collecting the data and transferring them by cable to a PC. Apart from this, data loggers do not automatically provide the responsible people with alarms when temperature limit values are violated.

Measurement data monitoring systems, on the other hand, automate monitoring, but need complicated installation and must be integrated into existing IT structures. Apart from this, they're also not exactly cheap to buy and maintain.


The solution.

The new data logger system testo Saveris 2 offers a cost- and time-efficient measurement solution, and considerably simplifies the automated monitoring of climatic ambient conditions.

testo Saveris 2 consists of a set of WiFi data loggers as well as a Cloud-based application which is operated via the internet. It works on the following simple principle: The data loggers measure temperature and humidity values via internal or external sensors and transmit the measurement data by wireless LAN to a server. The measurement values are stored safely online in the Testo Cloud, and are always available. They can be called up, managed and analyzed anywhere and at any time using a PC, Smartphone or tablet. A valid web browser serves as the user interface.

In the case of a limit value violation, the system automatically sends an alarm by e-mail and SMS (optional) to the desired end device.


You always have your measurement values with you

The great advantage of testo Saveris 2 is its simplicity. Commissioning the system is child's play without the need to study complicated instruction manuals. A few minutes after unpacking it, the wireless probes start transmitting the first measurement values by WiFi. No software is needed for recording, analyzing, and saving measurement data. Manual readout of the loggers is no longer necessary. The double storage of all measurement values – in the data logger and in the Cloud – ensures a high level of data security. With testo Saveris 2, the monitoring of ambient climatic conditions is intelligent. Without the need for a single cable to be installed, or a complicated IT infrastructure with firewalls, databases or backups to be serviced.

After registering in the Testo Cloud, you immediately have an overview of all current measurement values. You manage locations, create user profiles and program the WiFi data loggers, e.g. in order to define measurement rates, limit values or alarm notifications. The measurement values and reports can be completely downloaded at any time.

Direct live data exchange

Constantly changing regulations, increasing demands in quality assurance, and greater liability risks create a permanently growing need for documentation. Automated data flow is furthermore of increasing significance, not only eliminating sources of error in measurement, reporting, transfer and evaluation, but also considerably simplifying traceability in cases of emergency. Many concepts designed for this involve time delays and high costs. The automated processing in the Cloud, with its infinite computing and storage capacity, makes all measurement data available almost in real time, and solves these problems: 

testo Saveris 2 transmits live from the deep-freeze room – and you receive the measurement values on your Smartphone while you are purchasing new goods at the wholesalers. All measurement data can be viewed, shared and managed simultaneously by all authorized staff anywhere – on a PC in the office, with a Smartphone when out and about, or with a tablet at home.


Place your trust in the global market leader

The data logger system testo Saveris 2 is available in different variants. Two of the five WiFi data loggers have integrated probes, the other three require one or two external probes from the comprehensive probe range in order to be able to measure temperature and humidity. 

Different license models are available for the use of the Cloud, depending on the number of loggers and the type of alarm required. 

With the data logger system testo Saveris 2, you increase your operational efficiency, ensure quality and prevent possible damage to goods – while adhering to laws, standards and regulations.

testo Saveris 2 – all the advantages at a glance:

  • Flexible data access by PC, Smartphone, and tablet: simple, anytime, anywhere 
  • No software installation: Internet connection, wireless LAN and a valid web browser are enough
  • Very high security: double data storage


The WiFi data logger testo Saveris 2-T1 with wall bracket, padlock and USB cable.

More information.

More information and all answers to your questions concerning the monitoring of ambient conditions in the storage of foods in large kitchens, butchers, bakeries or catering businesses at