LP 471-P-A, Probe for Illuminance and UVA Irradiance

LP 471-P-A, Probe for Illuminance and UVA Irradiance

Application: 
This probe is an optional accessory for the Photo-Radiometer HD 2302.0.
It is a combined probe for measuring illuminance (lux), with standard photopic response, and irradiance (µW/cm²) in the UVA spectral range (315 ... 400nm, with peak at 360nm).
Both the sensors are equipped with a diffuser for the correction according to the cosine law.
This probe provides the ratio between UVA irradiance and illuminance in µW/lumen (quantity of interest in museums). The probe is equipped with a SICRAM module and a 2m cable.

Technical data Illuminance:
Measuring ranges (lux): 0.10  ... 199.99  ... 1999.9  ... 19999  ... 199.99·10³
Resolution (lux): 0.01     0.1     1     10
Spectral range: in agreement with standard photopic curve V(lambda) 
alpha (temperature coefficient)  f₆ (T): <0.05 % K
Calibration uncertainty: <4 %
f'₁  (in accordance with photopic response V(lambda)): <6 %
f₂ (response according to the cosine law): <3 %
f₃ (linearity): <1 %
f₄ (instrument reading error): <0,5 %
f₅ (fatigue): <0,5 %
Class:  B
Drift after 1 year: <1%
Working temperature: 0 ... +50°C
Reference standards: CIE n. 69 - UNI 11142

For the illuminance spectral response please refer to the curve of the LP-471-PHOT probe.

Technical data UVA irradiance:
Measuring range (W/m²): 1.0·10^-3 ... 999.9·10^-3
                                 1.000 ... 19.999
                                 20.00 ... 199.99
                                 200.0 ... 1,999.9
Resolution (W/m²):   0.1·10^-3 /  0.001 / 0.01 / 0.1
Spectral range: 315 ... 400nm (peak at 360nm)
Calibration uncertainty: <5%
f₂ (response according to the cosine law): <6%
f₃ (linearity): <1%
f₄ (instrument reading error): ±1 digit
f₅ (fatigue): <0.5%
Drift after 1 year: <2%
Working temperature: 0 ... +50°C
Probe head dimensions: Ø30mm x 38mm

For the UVA irradiance spectral response please refer to the curve of the LP-471-UVA probe.