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Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor Click here to enlarge
Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor Click here to enlarge
Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor Click here to enlarge
Apogee Instruments SQ-520 Full-Spectrum Quanum Sensor-Bottom view with included mounting screw. Even with the screw removed, the sensor remains waterproof. Click here to enlarge
Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor Apogee Instruments SQ-520 Full-Spectrum Quanum Sensor-Bottom view with included mounting screw. Even with the screw removed, the sensor remains waterproof.

SQ-520: Full-Spectrum Smart Quantum Sensor (USB)

$394.00

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 software. The sensor can also act as a stand-alone PAR datalogger by simply connecting it to most standard 5 V DC USB power plugs. 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.
Spectral Response

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 Apogee software (windows compatible, XP and later; Mac compatible, 10.10 and later). The included ApogeeConnect 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.

Click here for more information on ApogeeConnect software for USB sensors.

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 most stand-alone 5 V DC power supply such as a USB wall adapter.

Full Description
Where to Buy

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 software. The sensor can also act as a stand-alone PAR datalogger by simply connecting it to most standard 5 V DC USB power plugs. 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.
Spectral Response

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 Apogee software (windows compatible, XP and later; Mac compatible, 10.10 and later). The included ApogeeConnect 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.

Click here for more information on ApogeeConnect software for USB sensors.

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 most stand-alone 5 V DC power supply such as a USB wall adapter.


Product Manual

Specification Sheet

Technical Drawing

Software Downloads

Recalibration & Repair

Application Information

FAQs

Technical Support
Determining Grow Light Position Using a PAR Meter
Full-spectrum quantum sensor used to measure the PPFD output of grow lights to create PAR intensity maps of a grow area. The PAR intensity map is then used to determine how far the grow lights should be positioned from the crop for maximum yield.
Read More >

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Current Stock:
Resolution 0.1 µmol mˉ² sˉ¹ Calibration Factor Custom for each sensor and stored in the firmware Calibration Uncertainty ± 5 % Measurement Repeatability Less than 1 % up to 4000 µmol mˉ² sˉ¹ Long-term Drift Less than 2 % per year Non-linearity Less than 1 % (up to 4000 µmol mˉ² sˉ¹) 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 ˚, ± 5 % at 75 ˚ Azimuth Error Less than 0.5 % Tilt Error Less than 0.5 % Temperature Response -0.11 ± 0.04 % Cˉ¹ 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 to depths of 30 m Dimensions 24 mm diameter, 37 mm height USB Cable 4.5 m (15 ft) Mass 100 g (with 5 m of lead wire) Current Draw 61 mA Warranty 4 years against defects in materials and workmanship

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