Optical RadiationDigital sensor for color temperature and illuminance FLAD23CCT with ALMEMO® D6 plug • Color temperature and illuminance are determined as a means to plot and evaluate lighting systems. • Compact sensor, particularly suitable for mobile applications • Continuous measuring and updating of measured values • Digital color temperature sensor with „TrueColorSensorchip“ and integrated signal processor. The TrueColorSensorchip (3 sensors on 1 chip) detects - separately - each of the three colors - red, green, blue (RGB). The respective sensitivities of these 3 color sensors are adapted to the standard spectral curves as per CIE and DIN (see Figure). On the basis of these RGB values the computer calculates the color point within the RGB range in terms of coordinates X and Y and determines the correlated color temperature (CCT) in Kelvin. • The display shows simultaneously both this color data and the illuminance in lux (lx) or kilolux (klx). • Freely selectable measurable variables. Two measuring channels are programmed (at our factory): Color temperature (CCT, K), Illuminance (Ev, lx). Other measurable variable can also be selected: Illuminance (Ev, klx), X-value, Y-value. The configuration is performed on the ALMEMO® V7 measuring instrument or directly on the PC using the USB adapter cable ZA1919AKUV (see chapter “ALMEMO® Network technology”). Sensor system TrueColor, 3 sensors on 1 chip Measuring ranges Correlated color temperature (CCT) 54 to 30,000 K (at 120 lx to 170 klx) Coordinates resolution (dx, dy) < 0.005 Illuminance (V-lambda) 10 to 65,000 lx (factory setting) or 0.05 to 170.00 klx Cosine correction 8 mm diffuser plate Measuring duration_< 3 seconds_ Dimensions Diameter 25 mm, length 134 mm ALMEMO® connecting cable Fixed cable, 1.5 meters, with ALMEMO® D6 plug Refresh rate 1.5 seconds for all channels Setting time 3 seconds (In order to run the data logger in sleep mode a wakeup delay of 3 seconds must be programmed.) Current consumption approx. 4 mA 11/2025 • We reserve the right to make technical changes. Color temperature sensor with ALMEMO® 2590-2 (example) Digital sensor for color temperature and illuminance, fitted cable, 1.5 meters with ALMEMO® D6 plug FLAD23CCT

Optical Radiation ALMEMO® D6 11/2025 • We reserve the right to make technical changes. Accessories Ulbricht integrating sphere • Ulbricht integrating sphere, for measuring total radiation from any light source • Especially suitable for measuring operations on site for light sources that have already been installed. This minimizes interference from extraneous light in the environment. • Dimensions Measuring aperture 13.5 mm Sphere diameter 40 mm Housing diameter 44.5 mm, length 44 mm An Ulbricht integrating sphere can be attached to color temperature sensor FLAD23CCT