Apogee Full Spectrum Quantum PAR Sensor for All Light Sources Including LED

• The MQ-500 is used to measure incoming PPFD measurements in outdoor environments, greenhouses, growth chambers, and aquariums.
• Full spectrum quantum sensor with a spectral range of 389 to 692 nm ± 5 nm.
• Optional accessories pictured include the AM-310 Telescoping.
• Extension Wand for reaching further into plant canopy (super useful) and the Apogee AC-100 USB Data Cable to connect and download to PC.
• Accurate, Stable Measurements Long-term non-stability determined from multiple replicate quantum sensors in accelerated aging tests and field conditions is less than 2 % per year.
• Rugged, lightweight and portable with a four year manufacturers warranty.

Refined Spectral Response
The improved spectral response of the MQ-500 increases the accuracy of LED measurements making it ideal for use with both natural and electric light sources.

Cosine Response
This cosine-corrected sensor is designed to maintain its accuracy when radiation comes from low zeith angles. The sensors measure PPFD with a cosine response accurate within ± 5% at 75° zenith angle.

Rugged Design
Head is potted solid making it submersible and suitable for use in all climate conditions.

Warranty and Support
All Apogee products are backed by an industry-leading four-year warranty and outstanding customer support.

Calibration Uncertainty: ± 5 %

Measurement Range: 0 to 4000 µmol mˉ² sˉ¹

Measurement Repeatability: Less than 0.5 %

Long-term Drift (Non-stability): Less than 2 % per year

Non-linearity: Less than 1 % (up to 4000 µmol mˉ² sˉ¹)

Response Time: Less than 1 ms

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: ± 5 % at 75 ˚ zenith angle

Azimuth Error: Less than 0.5 %

Tilt Error: Less than 0.5 %

Temperature Response: -0.11 ± 0.03 % Cˉ¹

Uncertainty in Daily Total: Less than 5 %

Detector: Blue-enhance silicon photodiode

Housing: Anodized aluminum body with acrylic diffuser

IP Rating: IP68

Operating Environment: 0 to 50 C, less than 90 % non-condensing relative humidity up to 30 C, less than 70 % non-condensing relative humidity from 30 to 50 C, separate sensors can be submerged in water up to depth of 30 m

Meter Dimensions: 126 mm length, 70 mm width, 24 mm height

Sensor Dimensions: 24 mm diameter, 37 mm height

Mass: 100 g (with 5 m of lead wire)

Cable: 2 m of shielded, twisted-pair wire with santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions), additional cable available

Warranty: 4 years against defects in materials and workmanship

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