Senseca LP471LUM2 Luminance Probe
Senseca LP471LUM2 Luminance Probe
Senseca LP471LUM2
The Senseca LP471LUM2 is a photometric probe for luminance measurement, designed for use with portable Senseca/Delta OHM measuring instruments. Its spectral response follows the standard photopic curve V(λ), which represents the sensitivity of the human eye to visible light.
The probe measures luminance over a range from 1.0 cd/m² to 2,000,000 cd/m² and features a 2° angular field, allowing directional measurement of the luminance of specific surfaces or light sources.
The LP471LUM2 is classified as Class C and offers good photometric accuracy, with calibration uncertainty below 5% and deviation from the standard photopic response f’1 < 8%. Linearity is f3 < 1%, while long-term drift after one year is below 1%.
The operating temperature range is 0 to +50 °C, and the stated reference standards are CIE No. 69 and UNI 11142.
The probe is suitable for photometric luminance measurements, evaluation and control of lighting systems, displays, light sources, and illuminated surfaces, especially where directional measurement with a narrow viewing angle is required.
For more information:
LP471LUM2 - Luminance Probe - Light - Senseca
Technical Specifications – Senseca LP471LUM2
| Parameter | Value |
|---|---|
| Measuring Range | 1.0–1999.9 cd/m²; 1999–19,999 cd/m²; 19,999–199.99 × 10³ cd/m²; 199.99 × 10³–1999.9 × 10³ cd/m² |
| Resolution | 0.1 cd/m²; 1 cd/m²; 0.01 × 10³ cd/m²; 0.1 × 10³ cd/m² |
| Optical Angle | 2° |
| Spectral Response | In agreement with the standard photopic curve V(λ) |
| Class | C |
| Calibration Uncertainty | <5% |
| f’1 – Agreement with Photopic Response V(λ) | <8% |
| f3 – Linearity | <1% |
| f4 – Instrument Reading Error | <0.5% |
| f5 – Fatigue | <0.5% |
| Temperature Coefficient α / f6(T) | <0.05%/K |
| Drift After 1 Year | <1% |
| Operating Temperature | 0 to +50 °C |
| Reference Standards | CIE No. 69; UNI 11142 |
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