What to consider when buying a Fever Screening Solution

In current times, more than ever we need to be vigilant of fevers or virus’s and in turn the wellbeing of staff and customers in public areas.

In addition, we need to increase everyone’s confidence in knowing they are entering a safe environment.

Fever or Temperature Screening is seen to be a valid method of achieving this so Acrovision has developed and released the AFS-100 Fever Screening Solution, which meets the ISO 80601-2-59:2017 standards for “Basic Safety and Essential Performance of Screening for Human Febrile Temperature”.

In designing the solution, Acrovision analysed what the market needed and considered what were the important aspects of a Temperature Screening system.

AFS-100 Fever Screening SolutionWith so many offerings suddenly appearing on the market potential buyers of such equipment should also be asking themselves the following questions:

  • Does the solution measure the temperature of a person’s Medial Canthus (tear duct region)?

If not, the result is not likely to be either accurate or consistent. Other parts of the face such as the forehead will vary considerably in temperature, subject to ambient environment. IR temperature measurement at the Medial Canthus is generally accepted as a region that offers the closest correlation to the core body temperature.

AFS-100 targets the Medial Canthus area. It analyses every pixel (approx. 1.3mm) of this area and highlights the hottest region.

  • What is the pixel resolution used in the solution?

The ISO Standard IEC80601-2-59 for “basic safety and essential performance of screening human febrile temperatures” calls for a minimum camera resolution of 340×240 pixels. This allows for accurate measurement of the small Medial Canthus area.

AFS-100 uses a state-of-the-art thermal imaging camera with a resolution of 382×288 pixels. We use relevant lensing on the camera to make sure the optimum focus and region is achieved at approx. 1 meter away from the user.

  • Does the solution use a “Reference Body / Black Body”?

AFS-100 Fever Screening SolutionIf not, although most IR cameras with microbolometer sensors are promoted today with accuracies of +/- 0.5 °C or better, these accuracies cannot be achieved without the use of a black body reference source. So be aware of systems that claim +/- 0.5 °C and do not use a reference. This claim is sometimes made by averaging out temperatures in the software and is therefore not as reliable.

AFS-100 uses a Reference Body which ensures the required accuracy regardless of changing ambient temperatures.

  • Does the solution come with a certificate of calibration?

It is important for users to know that the equipment is accurate and reliable and built using calibration processes to National Metrology Institute standards.

AFS-100 is sold with a certificate of calibration, validating the measurement made against a traceable 35 °C temperature reference source.

It should be remembered that all Fever Screening solutions are only indicators of high temperature and that suspect instances should always be followed up with further investigation. However, when selecting one for your organisation, you need to be reassured that it is “fit-for-purpose” and offers the greatest chance of highlighting fever-like systems.

AFS-100 Fever Screening Solution


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