9
In the chart below is given the max light source size for each rail position.
Rail
position
Light
Source
Diameter
Sensor
Distance
Table
Length
Room
Length
Rail
1
40 mm
350 mm
2 m
3 m
I
2
60 mm
500 mm
2 m
3 m
I
3
90 mm
750 mm
2 m
3 m
I
4
120 mm
1000 mm
2 m
3 m
I
5
180 mm
1500 mm
2 m
3 m
I
6
240 mm
2000 mm
3.5 m
4.5 m
I+II
7
300 mm
2500 mm
3.5 m
4.5 m
I+II
8
360 mm
3000 mm
3.5 m
4.5 m
I+II
9
420 mm
3500 mm
5 m
6 m
I+II+III
10
540 mm
4500 mm
5 m
6 m
I+II+III
Example
If you need to measure a light source with a diameter of 270 mm, you need to have
Rail I and Rail II mounted and the sensor should be slid to position 7 (sensor distance
2500 mm)
Room width: Recommended 100 cm or more (Minimum 60 cm depending on lamp
size)
10.
Goniom
eter ‘Dark
Z
one’
Normally when doing light measurements, a completely dark room is needed. But
with the BaseSpion it is not a necessity for the whole room to be dark as the sensor
uses a special directional sensor. This means having only the goniometer in a dark
zone will be sufficient, as shown below.
Minimum 1 m recommended
Dark Zone
