SQ-520: Full-Spectrum Smart Quantum Sensor (USB):
FOR SCIENTISTS & SERIOUS GROWERS – Designed by world-renowned crop physiologist Bruce Bugbee, Ph.D., the SQ-520 full-spectrum quantum USB sensor is the premium tool of choice among leading scientists and growers for accurately measuring the photosynthetically active radiation (PAR) from all light sources.
QUALITY QUANTUM SENSOR – Unlike cheaper LUX or foot-candle sensors, which are sometimes marketed as grow light sensors but are meant for measuring light for human vision, our sensors feature a laboratory-grade PPFD (photosynthetic photon flux density), or “quantum,” optical detector precisely calibrated to measure the light intensity in mol m-2 s-1 of the specific color wavelengths emitted by LEDs, HPS, MH, sunlight, and other light sources utilized by plants for photosynthesis.
USB COMPATIBLE – Smart quantum sensors can be connected directly to a computer (Windows or macOS X) for taking spot measurements or for graphing and data logging real-time PPFD using the included Apogee Connect 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.
EXTREMELY ACCURATE & STABLE – The sensor precisely measures and combines the intensity of all photons between 400 and 700 nm to give a single PAR reading in µmol m-2 s-1 within 5 % uncertainty. Unlike hobby-grade PAR sensors, our sensor has a stable, accurate calibration with an accuracy drift rate of less than 2 % per year.
RUGGED & EASY TO USE – The quantum sensor head is machined from aluminum and potted solid with epoxy for years of use in harsh environments, including underwater. 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. For full-spectrum measurements with both a meter and a sensor, please see our MQ-500.
MADE IN THE USA – All sensors are designed, built, and calibrated at our headquarters in Logan, Utah, USA. Apogee Instruments has been creating research-grade instruments for scientists and serious growers for over 25 years. All sensors are backed by our industry-leading, four-year warranty and supported by our world-class, US-based customer support team.
Application and features of SQ-520: Full-Spectrum Smart Quantum Sensor (USB):
|✅ Measurement of incident PPFD on plant canopies in outdoor environments
✅ Greenhouses and growth chambers
✅ Reflected or under-canopy (transmitted) PPFD measurement in the same environments.
|✅ Accurate, Stable Measurements
✅ Unique Design
✅ No datalogger required
✅ Calibration Traceability
✅ Spectral errors of commercial quantum sensors