Apogee Instruments is proud to announce our new quantum sensor with an improved spectral response providing accurate PAR/PPFD measurements under all light sources, including LEDs.
includes quantum sensor and attached meter with cable. Optional accessories available.
The MQ-500 is a full spectrum quantum sensor with a spectral range of 389 to 692 nm ± 5 nm, which can be seen in the graph below. This improved spectral response increases the accuracy of LED measurements.
Refined Spectral Response
The improved spectral response of the MQ-500 increases the accuracy of LED measurements making it ideal for use with both natural and electric light sources.
Cosine Response
This cosine-corrected sensor is designed to maintain its accuracy when radiation comes from low zeith angles. The sensors measure PPFD with a cosine response accurate within
± 5 % at 75 ° zenith angle.
Rugged Design
Head is potted solid making it submersible and suitable for use in all climate conditions.
Warranty and Support
All Apogee products are backed by an industry-leading four-year warranty and outstanding customer support.
Calibration Uncertainty ± 5 %
Measurement Range 0 to 4000 µmol m-2 s-1
Measurement Repeatability less than 0.5 %
Long-term Drift (Non-stability) less than 2 % per year
Non-linearity less than 1 % (up to 4000 µmol m-2 s-1)
Response Time less than 1 ms
Spectral Range 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 % of maximum)
Spectral Selectivity less than 10 % from 412 to 682 nm ± 5 nm
Directional (Cosine) Response ± 5 % at 75 ° zenith angle
Azimuth Error less than 0.5 %
