6
10. Previously measured data display procedure.
c
Press the “ ”
power button to turn the meter on.
d
Press the “lux/fc” button to select the desired unit; lux
or fc.
e
Press the “AVG” button to enter point illuminance value
average function.
f
Press the “READ” button and the previous average
data is displayed.
g
Press the
and
buttons to select the previous point
measured data as required.
h
Press the “AVG” button to exit this mode.
5-3 Luminous intensity measurement
Luminous intensity is a light source property. Defined as
the quantity of luminous flux emitted uniformly into a solid
angle, the basic unit of luminous intensity is the candela,
equal to one lumen per steradian. To calculate luminous
intensity, the detector’s area and its distance from the light
source must be known.
1. Press the
“
”
power button to turn the meter on.
2. Press the “lux/fc” button to select the desired units; lux or
fc.
