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LP471P-A – Combined Illuminance and Irradiance Probe
Brand: Delta OHM S.R.L.Combined probe for measuring ILLUMINANCE (lux), with standard photopic response, and IRRADIANCE (μW/cm²) in the UVA spectral range (315 to 400 nm, with peak at 360 nm).
Both the sensors are equipped with diffuser for the correction according to the cosine law.
- Illuminance measuring range: 0.10 lux to 200·10³ lux.
- Irradiance measuring range: 1.0 mW/m² to 2000 W/m².
This probe provides the ratio between UVA irradiance and illuminance in μW/lumen (quantity of interest in museums). CIE 157.
Supplied with SICRAM module and 2 m cable.
The probe works with the instruments DO9847 (from rev. R.1), HD31, HD2302.0 (from rev. 01), HD2102.1 (from rev. 11) and HD2102.2 (from rev. 21).
Specifications
Brand
Measuring Range: Resolution (W/m²)
- 0.3 to 199.9 : 0.01
- Up to 1999 : 0.1
- Up to 19999 : 1
- Up to 199.99·103 : 0.01·103
Spectral Range
- In agreement with standard photopic curve V(λ)
α (Temperature Coefficient) f6 (T)
- < 0.05 %K
Calibration Uncertainty
- < 4 %
f’1 (In Agreement with Photopic Response V(λ))
- < 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° to 50° C
Reference Standards
- CIE n.69 - UNI 11142
