Apogee Instruments SQ-520 - Sensor PAR/PPFD

Apogee Instruments SQ-520: PAR/PPFD sensor, direct USB connection to computer, suitable for measuring LED lighting, real-time measurement, with original software, made in the USA.

The Sonda SQ-520 can be connected directly to a computer via a USB cable to take point or graph and log measurements of PPFD (photosynthetic photon density = amount of PAR absorbed by the plant from lighting) in real time using the included software. At the same time, it can also be used as an independent logging unit with easy connection to a conventional 5 V DC USB adapter. The internal memory of the probe has a capacity of 10,000 user-specific periodic measurements with the possibility of saving them in CSV format.

use

• Measuring incoming PPFD . Compared to traditional LUX meters, it can be used for measuring LED lighting where PAR and PPFD values ​​play a crucial role!

specifications

• Resolution : 0.1 µmol × m^(-2) × s^(-1)
• Calibration factor : Specific for each probe; stored in the firmware
• Calibration deviation : ± 5 %
  
• Measurement repeatability : < 1 % up to 4000 µmol × m^(-2) × s^(-1)
  
• Long-term degradation of measurement accuracy : < 2 % per year
  
• Nonlinearity : < 1 % (up to 4000 µmol × m^(-2) × s^(-1))
  
• Timely response : The software updates every second
  
• Field of view : 180°
  
• Range of the light spectrum : 389 - 692 nm ± 5 nm (wavelengths at which the response is greater than 50% of the maximum)
  
• Spectral selectivity : < 10 % from 412 to 682 nm ± 5 nm
  
• Direction-dependent (cosine) response : ± 5% at zenith angle of 75°
  
• Azimuth error : < 0.5 %
  
• Inclination error : < 0.5 %
  
• Temperature response : -0.11 ± 0.03 % C^(-1)
  
• Measurement uncertainty during daytime : < 5 %
  
• Probe : Improved blue silicon photodiode
  
• Housing : Anodized aluminum body with acrylic diffuser
  
• Completely dust and waterproof (IP68)
  
• Ambient temperature : -40 - 70 °C; 0 - 100 % RH; Individual sensors can be submerged to a depth of 30 meters
  
• Dimensions : Ø 24 mm, 37 mm length
  
• USB cable : 4.6 m
• Probe weight : 90 g
• Power consumption : 61 mA
• Warranty : 4 years against material and processing defects
  
• Made in the USA
  

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