PIR-1P Quantum sensor

Overview

The PIR-1P Quantum Sensor measures Photosynthetic Photon Flux (PPF) in µmol·m⁻²·s⁻¹. The sensor is cosine-corrected, and has a domed diffusion disk and head for improved self-cleaning characteristics and long-term stability. The cosine error for typical applications is less than 2%. The output increases approximately 1% per year because of changes in the optical transparency of the diffusion disk. Quantum sensor is calibrated for sunlight. Average spectral errors associated with different light sources is shown on the right.

Standard output cable length between signal conditioner and monitor is 3 meters.