Campbell Sci – LI190R-L Solar Radiation

The LI190R Quantum Sensor, manufactured by LI-COR, accurately measures photosynthetic photon flux density (PPFD), which is the number of photons in the 400 to 700 nm waveband incident per unit time on a unit surface. It uses 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 these sensors to be measured directly by a Campbell Scientific data logger.

 
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Description

Specifications

Spectral Range 400 to 700 nm
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
Linearity Maximum deviation of 1% (up to 10,000 μmole s-1 m-2)
Shunt Resistor 604 Ω, 0.1%, 25 ppm
Long-Term Stability < ±2% change over a 1 year period
Response Time < 1 μs
Temperature Dependence 0.15% per °C (maximum)
Cosine Correction Cosine corrected up to 82° angle of incidence
Operating Temperature Range -40° to +65°C
Relative Humidity Range 0 to 100% (non-condensing)
Detector Description High-stability silicon photovoltaic (blue enhanced)
Sensor Housing Description Weatherproof anodized aluminum case with acrylic diffuser and stainless-steel hardware; O-ring seal on the removable base and cable assembly
Diameter 2.36 cm (0.93 in.)
Height 3.63 cm (1.43 in.)
Weight 84 g (2.96 oz)

Additional information

Merek

Campbell Sci

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