We bring quality to light. Product-Highlights Less than 0.1 % variation in light output within 60 hours of operation Suitable for averaged LED intensity, luminous flux, color coordinates, dominant wave length, and color temperature Compatible with all Instrument Systems accessories Calibration is traceable to national standards Complete solution including software ACS-530 series calibration LEDs are convenient, reliable tools that let you check Instrument Systems measuring equipment and, if necessary, calibrate their absolute photometric readings. Instrument Systems calibrates these LEDs for measuring luminous flux and averaged LED intensity. All standards used for calibrating purposes are directly traceable to national labs’ reference standards, enabling calibration using the substitution method recommended by CIE. A calibration LED’s radiant power must be reproducible and remain stable, which requires excellent thermal management. To this end, the LED and components necessary to stabilize temperature are assembled in a small housing with very low thermal conductivity. This immunizes the LED against external temperature fluctuations and achieves excellent long-term stability and reproducibility, both of which are indispensable to taking reliable measurements. The LED’s light passes through a diffuser, producing a Lambertian radiation pattern. The calibration LED may be used with every Instrument Systems accessory, including the LEDGON goniophotometer. light measurement

We bring quality to light. LED Control software Instrument Systems developed LED Control software to program and read-out the TEC controller and the current source. For every calibration LED, this software generates a dedicated file that logs key operating parameters, for example, forward voltage, current, temperature, and operating time. This solution supports Keithley series 2400 and 2600 SourceMeter current sources, which also allow the LED’s forward voltage to be measured and monitored with great accuracy. Every calibration LED is equipped with a ribbon cable that provides an electrical connection...

We bring quality to light. Fast stabilization An LED’s stabilization time matters – it is a key criterion for convenience and efficiency in the lab. For every LED type, the software sends a discrete set of PID control parameters to the TEC controller. This reduces initial transient time to less than two minutes, after which the forward voltage (Vf) and temperature remain constant. This means that the calibration LED is ready for use after just a few minutes, saving valuable time in the lab. Calibration LEDs come in the four key colors blue, green, red, and white to cover the entire visible spectrum....

We bring quality to light. Typical photometric values and specifications LED Dominant wavelength [nm] or correlated color temperature Tn [K] Luminous flux Note: All indicated values are typical. Technical specifications Operating current Temperature at the control point Photometric stability 0.1% at 25 °C +/-2 °C ambient temperature 0.5% at 25 °C +/-5 °C ambient temperature All Instrument Systems measurement adapters with 25 mm diameter Electrical connections 2 banana plugs for power supply; Sub-D connector for temperature controller Ordering information Item no. White Calibration LED in socket...