The LI190R, manufactured by LI-COR, is a quantum sensor that accurately monitors Photosynthetic Photon Flux Density (PPFD) in both natural and artificial light. It has a voltage output and is ideal for growth chambers and greenhouses.
The LI190R measures solar radiation with a silicon photovoltaic detector mounted in a cosine-corrected head. A shunt resistor in the sensor’s cable converts the signal from microamps to millivolts, allowing the LI190R to be measured directly by a Campbell Scientific datalogger.
Calibration: ±5% traceable to the U.S. National Institute of Standards Technology (NIST)
Sensitivity: Typically 5 to 10 μA per 1000 μmoles s-1 m-2
Response Time: < 1 μs
Cosine Correction: Cosine corrected up to 82° angle of incidence
Detector: High stability silicon photovoltaic detector (blue enhanced)
Sensor Housing: Weatherproof anodized aluminum case with acrylic diffuser and stainless-steel hardware