HD31
- 135 -
V1.6
LP 471 BLUE radiometric probe measures irradiance (W/m
2
) in the Blue Light spectral band. The probe
consists in a photodiode plus a suitable filter and is provided with diffuser for proper measurement ac-
cording to the cosine law. The spectral response curve of the probe allows the effective irradiance for
blue-light induced damage (B(
λ
)curve according to ACGIH/ICNIRP
standards) to be measured in the
spectral range from 380 nm to 550 nm. Optical radiations in this portion of spectrum can cause photo-
chemical damage to the retina. Another field of use of the probe is the monitoring of blue light irradiance
in neonatal jaundice therapies.
LP471P-A
2-sensor combined probe for the measurement of
illuminance
and of
UVA
ir-
radiance
, with SICRAM module.
Illuminance
Measuring range (lux)
0.3…199.99 …1999.9 …19999 …199.99x10
3
Resolution(lux) 0.01
0.1
1
0.01x10
3
Spectral range
in accordance with standard photopic curve V(
λ
)
α
(temperature coefficient) f
6
(T) <0.05%
K
Calibration incertitude
<4%
f'
1
(accordance with photopic response
V(
λ
)
<6%
f
2
(response as law of cosines)
<3%
f
3
(linearity)
<1%
f
4
(error in instrument reading )
<0.5%
f
5
(fatigue)
<0.5%
Class B
1 year drift
<1%
Operating temperature
0…50
°
C
Reference standard
CIE n°69 – UNI 11142
Response curve
See response curve of LP471PHOT probe
UVA Irradiance
Measuring range (
μ
W/cm
2
) 0.10…199.99 …1999.9 …19999 …199.99x10
3
Resolution(
μ
W/cm
2
) 0.01
0.1
1
0.01x10
3
Spectral range
315 nm…400 nm (Peak 360 nm)
Calibration incertitude
<5%
f
2
(response as law of cosines)
<6%
f
3
(linearity)
<1%
f
4
(error in instrument reading )
±
1digit
f
5
(fatigue)
<0.5%
1 year drift
<2%
Operating temperature
0…50
°
C
Response curve
See response curve of LP471UVA probe
Summary of Contents for HD31
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