Instruction Sh eet01 2-09 835 BLight SensorPS-2106A.*See the PASCO catalog or the PASCO web site at www.pasco.comfor more information.IntroductionThe PS-2106A Light Sensor measures illuminance in unitsof lux. Illuminance is a measure of how much the incidentlight illuminates a surface, and is the total luminous flux perunit area. The lux is a lumen per square meter. The lumen(Systeme International (SI) unit) is defined in relation to thecandela, one of the SI base units.The sensor is designed to work with a PASPORT-compatibleinterface (such as the UI-5100 850 Universal Interface) andPASCO data acquisition software (such as PASCO Cap-stone) to measure illuminance.The sensor includes a sensor mounting stud that can bescrewed into the threaded hole on the side of the sensor. Thesensor mounting stud can then be attached to a support rodusing a clamp.The Light Sensor has a three ranges which are representedby the icons next to the range select buttons. The candlerange is 0 to 2.6 lux, the light bulb range is 0 to 260 lux, andthe sun range is 0 to 26,000 lux.Setup the Light Sensor• Plug the sensor into one of the PASPORT input ports ofa PASCO PASPORT-compatible interface.NOTE: If more distance is needed between the sensor andthe interface, plug the sensor into the included Sensor Exten-sion Cable, and then plug the cable into the interface.• Start the PASCO data acquisition software.Using PASCO Capstone Software• Click the “Hardware Setup” icon in the Tools palette toopen the “Hardware Setup” panel. Confirm that theLight Sensor icon appears with the interface’s icon.LightPort Threaded HoleRange SelectButtonsIncluded ItemsLight SensorSensor Mounting StudRequired Items*PASCO InterfacePASCO Data Acquisition SoftwareRecommended Item*Sensor Extension Cable (PS-2500)SensorPASPORTInput PortInterface