Apogee USB Full Spectrum Quantum Sensor 400-700nm
2-10 Days
Product Description
The new SQ-520 full-spectrum, smart quantum sensor can be connected directly to a computer via USB for taking spot measurements or graphing and datalogging real-time PPFD using the included ApogeeConnect software
. Application
The SQ-520 is used to measure incoming and reflected PPFD around plants and other organisms in outdoor environments, greenhouses, growth chambers, and underwater.
Refined Spectral Response
The improved spectral response of the SQ-520 increases the accuracy of LED measurements making it ideal for use with both natural and electric light sources.
No Datalogger Required
The sensor can be connected to a desktop, laptop, or tablet computer via USB 2.0 type A plug to be used with the ApogeeConnect software (Windows compatible, XP and later; Mac compatible, 10.10 and later). The included software gives the user control of data logging and calibration settings, provides a real time output display and graph of PPFD measurements and allows the data set to be saved as a csv file.
Specifications
Resolution 0.1 µmol m-2 s-1
Calibration Factor Custom for each sensor and stored in the firmware
Calibration Uncertainty ± 5 %
Measurement Repeatability Less than 1 % up to 4000 µmol m-2 s-1
Long-term Drift Less than 2 % per year
Non-linearity Less than 1 % (up to 4000 µmol m-2s-1)
Response Time Software updates every second
Field of View 180 °
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 ± 2 at 45 ° zenith angle,± 5 at 75 ° zeith angle
Azimuth Error Less than 0.5 %
Tilt Error Less than 0.5 %
Temperature Response -0.11 ± 0.03 % C-1
Uncertainty in Daily Total Less than 5 %
Detector Blue-enhanced silicon photodiode
Housing Anodized aluminum body with acrylic diffuser
IP Rating IP68
Operating Environment -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
Dimensions 24 mm diameter, 37 mm height USB Cable 4.6 m (15 ft)
Mass Sensor head weighs 90 g Current Draw 11 mA
Warranty 4 years against defect in materials and workmanship