Illuminance detector CT-4501

illuminance detector
illuminance detector
illuminance detector
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Detected entity
photodiode, photometric


The CT-4501 is an RGB detector for measurement of the illuminance and luminous color. Its photometric responsivity and the cosine field of view function of the Y-detector correspond to the DIN 5032- Article 7 quality class B. Instead of the red, green and blue receptors found in the human eye and in many competitive products, the CT-4501 is equipped with four photodiodes. Separation of the x function in x-short and x-long photodiode enables the CT-4501 RGB detector to guarantee outstanding measurement results when combined with blue dominant light spectra. Each measurement channel in the CT-4501-1 RGB-detector has a signal line with a BNC connector. This enables connection of the measurement head to P-9801 series optometers. Typical applications of these measurement devices include industrial manufacturing processes where the switching mode of luminaires and light flashes have to be evaluated. The CT-4501-4 RGB detector is equipped with –4 plug suitable for connection onto both mobile and stationary optometers from the X1 series. Typical applications of these measurement devices include RGB monitor detectors and integrating sphere light sources.


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