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Description
20
5.4
Sensor
The sensor establishes the current UV tolerance and the base tan of human
skin. The sensor measures down into the lower skin layers, so that not just
the superficial skin coloring is assessed.
The first tanning session must be a test session, in order to establish if there
are any unexpected effects from the UV radiation. For the test tanning a
minimum dosage of 100 J/m
age is always emitted automatically during the tanning session if no skin ar-
eas are being measured and the sensor stays in the station from the very
beginning.
The sensor must be used from the second tanning onwards, so that an opti-
mum tan can be achieved.
Since the face usually receives more exposure to the natural rays of the sun
than other parts of the body, two measurements are carried out before each
tanning session:
one on the forehead and
one at the lightest part of the body to be tanned.
Based on these measurements, the necessary lamp output is then independ-
ently set for the head and the body area. The tanning time remains the same
for all tanning sessions.
(erythema radiation) is emitted. This test dos-
2
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