UDT Instruments offers a wide range of photosensors for both photometric and radiometric applications. Basic sensors, used alone, are suitable for illuminance or irradiance measurements. Each type of sensor can be combined with various types of optical adaptors to form sensor head assemblies suitable for measurements of flux, intensity, luminance, or radiance.
Model 211: Illuminance Sensor Head
Model 263: Illuminance Sensor Head - Miniature
Model 268P: Illuminance Sensor Head - Low-profile
Model 424: LED Measurement Head
211 | 263 | 268P | 424 | |
Standard Calibration(s) | lux; fc | lux; fc | lux; fc | Luminous Intensity (cd) for both CIE127 Conditions: A and B |
Photometric Filter Accuracy | < 1.0% | < 1.0% | < 1.0% | / |
CIE V(λ) function | < f1' ≤ 3% | < f1' ≤ 3% | < f1' ≤ 3% | / |
Sensor Active area (cm2) | 1 | 0.34 | 1 | / |
Dynamic Range | 1.0E-02 - 5.0E+05 lux | 5.0E-01 - 5.0E+05 lux | 1.0E-03 - 2.0E+04 lux | 1.0E-04 - 5.0E+04 cd |
Typical response | 3.2E-09 A/lux @555 nm | 7.3E-10 A/lux @555 nm | / | / |
Features | High accuracy photometric filter (f'1 < 3%) | High accuracy photometric filter (f'1 < 3%) | High accuracy photometric filter (f'1 < 3%) | / |
Compatible Components | 2525; 2500; 1153; 1120; 116; 124; 114; 105; 106; 107 | 2575; With adaptor #1718: 2525; 2500 | / | / |