SQ-521 SDI-12 Digital Output Full-spectrum Quantum Sensor

SQ-521-SS SDI-12 Digital Output Full-spectrum Quantum Sensor

SQ-521 SDI-12 Digital Output Full-spectrum Quantum Sensor with cable connector.

SQ-521-SS SDI-12 Digital Output Full-spectrum Quantum Sensor

$587.00

The SQ-521 is a digital sensor with SDI-12 communication protocol. The sensor incorporates a rugged, self-cleaning sensor housing design, anodized aluminum body with acrylic diffuser, and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. 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.

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

• Product Manual

• Specification Sheet

• Technical Drawing

MORE INFORMATION ON APOGEE FULL-SPECTRUM QUANTUM SENSORS >> click here

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 response increases the accuracy 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.

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Where to Buy

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

• Product Manual

• Specification Sheet

• Technical Drawing

MORE INFORMATION ON APOGEE FULL-SPECTRUM QUANTUM SENSORS >> click here

Where is the SQ-500 used?

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

Current Stock:

Input Voltage Requirement 5.5 to 24 V DC Current Draw 1.4 mA (quiescent), 1.8 mA (active) Calibration Uncertainty ± 5 % Measurement Repeatability Less than 1 % (up to 4000 µmol mˉ² sˉ¹) Non-stability (Long-term Drift) Less than 2 % per year Non-linearity Less than 1% (up to 4000 µmol mˉ² sˉ ¹) Response Time 0.6 s, time for detector signal to reach 95 % following a step change, fastest data transmission rate for SDI-12 circuitry is 1 s 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 % per C 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 30.5 mm diameter, 37 mm height Mass (with 5 m of cable) 140 g Cable 5 m of two conductor, shielded, twisted-pair wire; additional cable available in multiples of 5 m; TPR jacket; pigtail lead wires; stainless steel (316), M8 connector Warranty 4 years against defects in materials and workmanship Manufactured Assembled in the USA