Elcometer 550 Mode D'emploi page 10

R
2.5.2 Positioning the Sensor Gun to take a reading
The Elcometer 550 is a non-contact powder thickness gauge which uses a focused ultrasonic measurement
method. In order for the gauge to collect the data required to calculate a reading, the sensor gun has to be
at the correct distance away from, and perpendicular to, the powder coated surface.
To achieve the correct positioning the Elcometer 550 Non-Contact Uncured Powder Gauge provides the
user with both visual and acoustic cues on the sensor gun and on the instrument's colour display. Once the
gauge is in the correct position the gauge starts to automatically collect data. The diagrams below illustrate
how to use the visual indicators on the gauge and gun to achieve the correct measurement position.
Too close to
surface
Correct
distance from
surface
Too far away
from surface
8
Signal strength
(All lights displayed
when perpendicular)
Gauge switch on/
start taking
measurements
Signal strength bar (yellow)
Wide Bar = perpendicular
Narrow Bar = not perpendicular
Too far
from
surface
Correct
distance to
target
Too close
to surface