Exercise 
(1)Find the luminous intensity of the luminous source of distance 10m, angle 60˚ and illuminance 20 lux.
(2)Find the illuminance of the illuminated side of distance 10m, angle 60˚ and luminous intensity 4000 candela.
Set up condition: decimal point in Float Pt Mode.
2ndF 
SET UP 
C 
1 
CL
1
2
3
4
Step
Specify the programme mode. Select the title CAND LUX.
Select calculation of luminous intensity.
Enter the values of distance, angle, and illuminance.
(Display of luminous intensity)
Select calculation of illuminance. Enter the values of distance, angle, and luminous intensity.
(Display of illuminance)
Key Operation | Display |
PRGM 
A
1 
ENTER
1 
0 
ENTER 
6 
0 
ENTER
2 
0 
ENTER
ENTER 
2 
ENTER
1 
0 
ENTER
6 
0 
ENTER
4 
0 
0 
0 
ENTER
7
