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SQ-500: Full Spectrum Quantum Sensor

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  • Apogee Instruments SQ-500 Full-spectrum Quantum Sensor
  • Apogee Instrumetns SQ-500 Full-spectrum Quantum Sensor with included mounting screw
  • Apogee Instruments SQ-500 Full-spectrum Quantum Sensor-Bottom view with included mounting screw. Even with the screw removed, the sensor remains waterproof.
  • Apogee Instruments SQ-500 Full-spectrum Quantum Sensor-Back view
  • Apogee Instruments SQ-500 Full-spectrum Quantum Sensor-Close up
  • SQ-500 Full-spectrum Quantum Sensor accurately measures all light sources including LEDs. (Shown with AL-100 leveling plate accessory)
  • SQ-500 Full-spectrum Quantum Sensor accurately measures all light sources including LEDs. (Shown with AL-100 leveling plate accessory)
  • SQ-500 Full-spectrum Quantum Sensor greenhouse application. (Shown with AL-100 leveling plate accessory)
  • Apogee Instruments SQ-500 Full-spectrum Quantum Sensor shown with AL-100 leveling plate accessory.
Price:
$295.00
SKU:
SQ-500


Product Description

The SQ-500 is a self-powered, analog full-spectrum quantum sensor with a 0 to 40 mV output. The sensor incorporates a blue-enhanced silicon photodiode and custom optical filters with a rugged, self-cleaning sensor housing design, anodized aluminum body with acrylic diffuser. Typical applications include PPFD measurement over plant canopies in outdoor environments, greenhouses, and growth chambers, and reflected or under-canopy (transmitted) PPFD measurements in the same environments. Quantum sensors are also used to measure PAR/PPFD in aquatic environments, including salt water aquariums where corals are grown.

 

Manuals
Owner's
Manual
Specification Sheets
Specification
Sheet
Technical Information
Sample Datalogger
Programs
Technical Drawings
Technical
Drawing
Technical Information
Technical
Information

 

How is the SQ-500 different
from previous Apogee quantum sensors?


The SQ-500 is a full spectrum quantum sensor with a spectral range of 389 to 692 nm ± 5 nm, which can be seen in the graph below. This improved spectral respose increases the acuracy of LED measurements.
SQ-500 & SQ-100 Spectral Response

Where is the SQ-500 used?

The SQ-500 is used to measure incoming PPFD measurements in outdoor environments, greenhouses, growth chambers, and aquariums.


Specifications

Power Supply
Self-powered
Output (Sensitivity)
0.01 mV per µmol m-2 s-1
Calibration Factor (Reciprocal of Sensitivty)
100.0 µmol m-2 s-1 per mV
Calibration Uncertainty
± 5 %
Calibrated Output Range
0 to 40 mV
Measurement Range
0 to 4000 µmol m-2 s-1
Measurement Repeatability
Less than 0.5 %
Long-term Drift
Less than 2 % per year
Non-linearity
Less than 1 % (up to 4000 µmol m-2 s-1)
Response Time
Less than 1 ms
Field of View
180°
Spectral Range
389 to 692 nm ± 5 nm (wavelegths where response is greater than 50 % of maximum)
Spectral Selectivity
Less than 10 % from 412 to 682 nm ± 5 nm
Directional (Cosine) Response
± 5 % at 75° zenith angle
Azimuth Error
Less than 0.5 %
Tilt Error
Less than 0.5 %
Temperature Response
-0.11 ± 0.04 % 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
Mass
100 g (with 5 m of lead wire)
Cable
5 m of shielded, twisted-pair wire; additional cable available in multiples of 5 m; santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires
Warranty
4 years against defects in materials and workmanship

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