tool of choice for researchers and agricultural professionals measuring photosynthetically active radiation (PAR) all over the world. Apogee offers two types of quantum sensors: a Full-spectrum Quantum and Original X Quantum Sensor. Consult our spectral response graph to decide which model is right for your application.
Accurate, Stable Measurements
Cost-effective, original quantum sensors work well for broadband radiation sources (sun, high-pressure sodium, metal halide, cool white fluorescent lamps), while full-spectrum sensors are good for all light sources, including LEDs. Offers a self-cleaning, cosine-corrected head that is fully-potted for a waterproof design.
Typical PPFD Measurement Applications
• Incoming and reflected PPFD over and under
plant canopies in greenhouses, in fields, and in
growth chambers
• Aquatic environments including salt water
aquariums and freshwater lakes and streams
Calibration Traceability
Apogee SQ series quantum sensors are calibrated through side-by-side comparison to
the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).
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