© Thermoteknix Systems Ltd 2020
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4.2
Introduction to FevIR Cam 2 technology
The Thermoteknix FevIR Cam 2 uses the latest technology of thermal imaging
infrared the FevIR Cam combined with a high-resolution CCD colour visible camera in
a single housing. A blackbody temperature reference unit is a separate device which
maintains its front surface at a constant pre-set temperature and which is accurate
to within ±0.2°C.
The best hand-held type of thermal imaging cameras, when used alone, are very
sensitive to difference in temperature but are only accurate to within ±2°C for
actual temperature so are unable to differentiate between a skin temperature of 37
or 39°C. This makes them wholly unsuitable for use as a fever screening tool.
The Thermoteknix FevIR Cam 1 and FevIR Cam 2 systems include a scientific,
blackbody
(termed a “
Calibration Reference Source
”)
within the field of view of the
FevIR Cam. The blackbody reference source is set to 35°C and this enables the FevIR
Cam
’s normally a
chieved ±2°C measurement accuracy to be increased to ±0.2°C
which will determine if a skin temperature is above 37.5°C versus 37.0°C and is
suitable for skin temperature monitoring. This extra accuracy is so important that
the FevIR Cam 2 software constantly monitors the Calibration Reference Source up to
20 times per second and in the event that the Calibration Reference Source is
moved, or the FevIR Cam misaligned or either of the units malfunctioning, then an on
screen alarm is shown and fever screening is paused until the error condition is
resolved.
The Thermoteknix FevIR Cam system cannot be operated without an approved
Calibration Reference Source reference unit in the field of view at all times and with
the calibration software circle tool correctly in position over the centre of the
Calibration Reference Source reference.
