Product no.: 118462
The new SQ-520 smart quantum sensor can be connected directly to a computer for taking spot measurements or graphing and datalogging real-time PPFD using the included software. The sensor can also act as a stand-alone PAR datalogger by simply connecting it to any standard 5 V DC USB power plug. Internal memory within the sensor head is capable of storing 10,000 user-specified periodic measurements that can be downloaded as a CSV file to a computer for analysis.
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 Apogee 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.
|Internal Data Storage
The sensor has internal data storage capability with the ability to hold up to 10,000 measurements. This allows the sensor to collect data while connected to a stand-alone 5 V DC power supply such as a USB wall adapter.
0.1 µmol m-2 s-1
Custom for each sensor and stored in the firmware
± 5 %
Less than 1 % up to 4000 µmol m-2 s-1
Less than 2 % per year
Less than 1 % (up to 4000 µmol m-2s-1)
Software updates every second
389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 % of maximum)
Less than 10 % from 412 to 682 nm ± 5 nm
Directional (Cosine) Response
± 2 at 45 ° zenith angle, ± 5 at 75 ° zeith angle
Less than 0.5 %
Less than 0.5 %
-0.11 ± 0.03 % C-1
Uncertainty in Daily Total
Less than 5 %
Blue-enhanced silicon photodiode
Anodized aluminum body with acrylic diffuser
-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
24 mm diameter, 37 mm height
Sensor head weighs 90 g
Current Draw (when Logging)