What is Chamber Mapping and What It is For

The mapping of an environmental chamber is a standardised method meant to:

  • Verify the effectiveness of the instrument's calibration
  • Compare its performance with other equipment of the same type

What does this method consist of?

The mapping of a climatic chamber involves a multi-point measurement of the test volume of the instrument, for both temperature and humidity parameters.

The measurement takes place at different working setpoints, depending on the specific test need.

When Performing an Environmental Chamber Mapping

Why is a climatic chamber mapping required?

This requirement comes upon request from the end user, when he has to comply with certain official regulations for a specific product or process.

The most common applications for this type of test are:

  • pharmaceutical
  • cosmetics
  • food

These are cases in which the manufacturer has to ascertain to a third party that the products stored in the chamber have indeed been maintained at a certain temperature and humidity and all official regulations relating to the product category in question have been followed.

The mapping of a climatic chamber is mainly based on standard EN-60068-3-5.

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Examples of Environmental Chamber Mapping

What are the steps to follow to perform a mapping according to the laws in force

Generally, sensors are installed in the chamber to detect the measurement, at certain points defined by the regulation.

The minimum requirement implies the use of nine data loggers for temperature and one for humidity.

Once the chamber is started, it is stabilized at certain setpoints.

Subsequently, the temperature recording is started for a time of at least 30 minutes and finally the data is analyzed, extrapolating values such as:

  • stability
  • uniformity
  • gradient (climatic temperature zone)

The same procedure can be carried out at different setpoints: it is often the user technician to establish these values, according to the relative regulation but also based on his own specific requirement.

Within the mapping process, there are some common variables that all laboratories tend to consider in the final result, such as:

  • Ambient temperature, including events such as opened doors and windows at the site.
  • Possible presence of heat sources and exposure to sunlight
  • Possible presence of air-conditioning systems
  • Insulation of the place

A supplier attentive to the care of the final result and the particular requirement of the customer, should keep all these variables in mind when preparing a climate chamber mapping.

FDM, according to its 70 years of experience in the field, will be able to suggest exactly the most suitable solution for your mapping need.


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