Instructions

- -
18
9.2 TECHNICAL CHARACTERISTICS OF PHOTOMETRIC AND RADIOMETRIC PROBES COMPLETE
WITH SICRAM MODULE EQUIPPED WITH THE INSTRUMENT
ILLUMINANCE measurement probe LP 471 PHOT complete with SICRAM module and equipped with the in-
strument
Measurement range (lux):
0.01…199.99
…1999.9
…19999
…199.99 10
3
Resolution (lux):
0.01
0.1
1
0.01 10
3
Spectral range:
in agreement with standard photopic curve V( )
α (temperature coefficient) f
6
(T):
<0.05% K
Calibration uncertainty:
<4%
f'1 (in agreement with photopic response V( )):
<6%
f
2
(response according to the cosine law):
<3%
f
3
(linearity):
<1%
f
4
(instrument reading error):
<0.5%
f
5
(fatigue):
<0.5%
Class:
B
Drift after 1 year:
<1%
Functioning temperature:
0…50 C
Reference Standard
CIE No. 69 – UNI 11142
LUMINANCE measurement probe LP 471 LUM 2 complete with SICRAM module and equipped with the in-
strument
Measurement range (cd/m
2
):
0.1…1999.9
…19999
…199.99 10
3
…1999.9 10
3
Resolution (cd/m
2
):
0.1
1
0.01 10
3
0.1 10
3
Optical angle:
2
Spectral range:
in agreement with standard photopic curve V( )
α (temperature coefficient) f
6
(T):
<0.05% K
Calibration uncertainty:
<5%
f'1 (in agreement with photopic response V( )):
<8%
f
3
(linearity):
<1%
f
4
(instrument reading error):
<0.5%
f
5
(fatigue):
<0.5%
Class:
C
Drift after 1 year:
<1%
Functioning temperature:
0…50 C
Reference Standard
CIE No. 69 – UNI 11142
Typical response curve
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
380 430 480 530 580 630 680 730 780 830
Lambda (nm)
Relative spectral response