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Full-spectrum Quantum Sensor Support

Full-spectrum quantum sensor support

Introduction
Specifications
Videos
Case Studies
Product Manuals
Spec Sheets
Technical Drawings
Helpful Articles & Links
FAQs
Software & Datalogger Programs
Recalibration & Repair
应用程序和使用

Full-spectrum Quantum Sensor Introduction

Radiation that drives photosynthesis is called photosynthetically active radiation (PAR) and is typically defined as total radiation across a range of 400 to 700 nm. PAR is often expressed as photosynthetic photon flux density (PPFD): photon flux in units of micromoles per square meter per second (µmol m-2s-1, equal to microEinsteins per square meter per second) summed from 400 to 700 nm (total number of photons from 400 to 700 nm). While Einsteins and micromoles are equal (one Einstein = one mole of photons), the Einstein is not an SI unit, so expressing PPFD as µmol m-2s-1is preferred.

Sensors that measure PPFD are often called quantum sensors due to the quantized nature of radiation. A quantum referes to the minimum quantity of radiation, one photon, involved in physical interactions (e.g., absorption by photosynthetic pigments). In other words, one photon is a single quantum of radiation.

Apogee Instruments SQ series quantum sensors consist of a cast acrylic diffuser (filter), photodiode, and signal processing circuitry mounted in an anodized aluminum housing, and a cable to connect the sensor to a measurement device. Sensors are potted solid with no internal air space. SQ-500 series quantum sensors are designed for continuous PPFD measurement in indoor and outdoor environments.

Full-spectrum Quantum Sensor Specifications
Apogee Instruments Full-spectrum Quantum Sensor Specifications
SQ-500-SS SQ-512-SS SQ-514-SS SQ-515-SS SQ-520 SQ-521-SS SQ-522-SS
Power Supply Self-powered 5 to 24 V DC 12 to 24 V DC 5.5 to 24 V DC 5 V USB power source 5.5 to 24 V DC 5.5 to 24 V DC
电流消耗 - At 12 V is 57 µA maximum of 20 mA At 12 V is 57 µA 61 mA when logging 1.4 mA (quiescent); 1.8 mA (active) RS-232 37 mA;
RS-485 quiescent 37 mA, active 42 mA
Output (Sensitivity) 0.01 mV per µmol m-2s-1 0.625 mV per µmol m-2s-1 0.004 mV per µmol m-2s-1 1.25 mV per µmol m-2s-1 - - -
Output Type 0 to 40 mV 0 to 2.5 V 4 to 20 mA 0 to 5 V USB SDI-12 Modbus
Resolution - - - - 0.1 µmol m-2s-1 - -
Calibration Factor (reciprocal of sensitivity) 100 µmol m-2s-1per mV 1.6 µmol m-2s-1per mV 250 µmol m-2s-1per mA 0.8 µmol m-2s-1per mV Custom for each sensor and stored in the firmware Custom for each sensor and stored in the firmware Custom for each sensor and stored in the firmware
Calibration Uncertainty ± 5 % ± 5 % ± 5 % ± 5 % ± 5 % ± 5 % ± 5 %
Measurement Repeatability Less than 0.5 % Less than 1 % Less than 0.5 % Less than 1 % Less than 0.5 % Less than 1 % Less than 1 %
Long-term Drift per Year Less than 2 % per year Less than 2 % per year Less than 2 % per year Less than 2 % per year Less than 2 % per year Less than 2 % per year Less than 2 % per year
Non-linearity Less than 1 % (up to 4000 µmol m-2s-1) Less than 1 % (up to 4000 µmol m-2s-1) Less than 1 % (up to 4000 µmol m-2s-1) Less than 1 % (up to 4000 µmol m-2s-1) Less than 1 % (up to 4000 µmol m-2s-1) Less than 1 % (up to 4000 µmol m-2s-1) Less than 1 % (up to 4000 µmol m-2s-1)
Response Time Less than 1 ms Less than 1 ms Less than 1 ms Less than 1 ms Software updates every second Less than 0.6 s -
Field of View 180° 180° 180° 180° 180° 180° 180°
Spectral Range 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %) 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %) 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %) 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %) 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %) 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %) 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %)
Spectral Selectivity Less than 10 % from 412 to 682 nm ± 5 nm Less than 10 % from 412 to 682 nm ± 5 nm Less than 10 % from 412 to 682 nm ± 5 nm Less than 10 % from 412 to 682 nm ± 5 nm Less than 10 % from 412 to 682 nm ± 5 nm Less than 10 % from 412 to 682 nm ± 5 nm Less than 10 % from 412 to 682 nm ± 5 nm
Directional (Cosine) Response ± 5 % at 75° zenith angle ± 2 % at 45°; ± 5 % at 75° ± 2 % at 45°; ± 5 % at 75° ± 2 % at 45°; ± 5 % at 75° ± 5 % at 75° zenith angle ± 2 % at 45°; ± 5 % at 75° ± 2 % at 45°; ± 5 % at 75°
Temperature Response -0.11 ± 0.04 % per C -0.11 ± 0.04 % per C -0.11 ± 0.04 % per C -0.11 ± 0.04 % per C -0.11 ± 0.04 % per C -0.11 ± 0.04 % per C -0.11 ± 0.04 % per C
Operating Environment -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m -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 30.5 mm diameter, 37 mm height 30.5 mm diameter, 37 mm height 30.5 mm diameter, 37 mm height 24 mm diameter, 37 mm height 30.5 mm diameter, 37 mm height 30.5 mm diameter, 37 mm height
Mass (5 m of cable) 100 g 140 g 140 g 140 g 100 g 140 g 140 g

Full-spectrum Quantum Sensor Videos
Apogee Instruments Full-spectrum Quantum Sensor Videos

How to Choose a Quantum Sensor

If you can't access the video via Youtube,click here.

Why do I need a PAR-Quantum Meter?

If you can't access the video via Youtube,click here.

In-depth Look at PAR-Quantum Meters

If you can't access the video via Youtube,click here.

Apogee microcache with Quantum Sensor Quickstart Guide

Far-red: The Forgotten Photons

If you can't access the video via Youtube,click here.

Turning Photons Into Food

If you can't access the video via Youtube,click here.

Toward an Optimal Spectral Quality for Plant Growth and Development

If you can't access the video via Youtube,click here.

PAR Sensor Spectral Error Correction Tool

If you can't access the video via Youtube,click here.

Quantum (PAR) Sensor Spectral Error Correction Tool

PAR, PPF, PPFD, and PFD Explained

Photobiology Simplified with Dr Bruce Bugbee

If you can't access the video via Youtube,click here.

Lecture 4-PAR

Apogee Instruments Meter User Guide

Full-spectrum Quantum Sensor Case Studies
Apogee Instruments Full-spectrum Quantum Sensor Case Studies
Typical Applications

Applications include:

• PPFD measurements over plant canopies in outdoor environments, greenhouses, and growth chambers

• Reflected or under-canopy (transmitted) PPFD measurements in outdoor environments, greenhouses, and growth chambers

•PAR/PPFD measurements in aquatic environments, including salt water aquariums where corals are grown

Modelling Algal Species in Kuwait with MQ-510
Modelling Algal Species in Kuwait
The Kuwait Institute for Scientific Research uses Apogees' MQ-510 underwater full-spectrum quantum meter to help model algal species. Here is a description Dr. Yousef Alosairi, Research Scientist in the field of numerical modeling of coastal processes, provided about their work:
Read More >
PDF >
Cornell Controlled Environmental Agriculture Light Research
Apogee Instruments' SQ-520 Full-Spectrum Quantum Sensor is helping Cornell University conduct research on growing vegetables in greenhouses using electric lighting.
Read More >
PDF >
RSMAS Coral Acidification Study
RSMAS Coral Acidification Study
Miami's Rosenstiel School of Marine and Atmospheric Science (RSMAS) is using Apogee's MQ-510 underwater full-spectrum quantum meter to help study coral acidification. Here is a description Sara Swaminathan provided about their work:
Read More >
PDF >
Determining Grow Light Position Using a PAR Meter
Determining Grow Light Position Using a PAR Meter
Full-spectrum quantum sensor used to measure the PPFD output of grow lights to create PAR intensity maps of a grow area. The PAR intensity map is then used to determine how far the grow lights should be positioned from the crop for maximum yield.
Read More >
PDF >
Tivoli Gardens Study
Tivoli Gardens Study
Using Apogee underwater quantum meters to measure light levels in the Tivoli Gardens aquarium exhibition.
Read More >
PDF >

If you would like to share your application of this product, pleaseclick here

Full-spectrum Quantum Sensor Product Manuals
Apogee Instruments Full-spectrum Quantum Sensor Product Manuals
SQ-500-SS
SQ-512-SS
SQ-514-SS
SQ-515-SS
SQ-520-USB
SQ-521-SS
SQ-522-SS
MQ-500
MQ-501
MQ-510

Full-spectrum Quantum Sensor Specification Sheets
Apogee Instruments Full-spectrum Quantum Sensor Specification Sheets
SQ-500-SS
SQ-512-SS
SQ-514-SS
SQ-515-SS
SQ-520-USB
SQ-521-SS
SQ-522-SS
MQ-500
MQ-501
MQ-510

Full-spectrum Quantum Sensor Technical Drawings
Apogee Instruments Full-spectrum Quantum Sensor Technical Drawings
SQ-500-SS
SQ-512-SS
SQ-514-SS
SQ-515-SS
SQ-520-USB
SQ-521-SS
SQ-522-SS
MQ系列
MQ-501

Helpful Articles and Links

How to Correct for Spectral Errors of Popular Light Sources (Apogee PAR Meter LED Corrections)

Underwater PAR Measurements

Solar, Net, and Photosynthetic Radiation - ASA Agroclimatology

Dana Riddle Reviews the MQ-500/510 - Dana Riddle, Advanced Aquarist

Apogee MQ-510 is The First Truly Underwater PAR Meter for Hobbyists - Jake Adams, Reef Builders

SQ-500 Product Announcement

Spectral Error for Apogee Instruments 500 Series Quantum Sensors/Meters White Paper

Immersion Effect Correction Factors for Apogee Quantum Sensors White Paper

USB Quantum Sensor Software Support

DLI (Daily Light Integral): Measuring Light for Plants

Comparisons in Quantum Sensor Output for Different Light Sources

Light Intensity Measurements for LEDs

Economic Analysis of Greenhouse Lighting: Light Emitting Diodes vs. High Intensity Discharge Fixtures

Spectral Errors from Four Commercial Quantum Sensors Under LEDs and Other Electric Lights

Analysis of Spectral and Cosine Errors in Quantum Sensors

Apogee Meter Tips and Troubleshooting

PPFD to Illuminance Calculator

Converting from µmol m-2s-1to footcandles

Converting from µmol m-2s-1to Lux

Converting from µmol m-2s-1to mol m-2d-1

Converting from µmol m-2s-1to Einsteins

Accuracy of Apogee Quantum Sensors Underwater Research Report

Comparison of Eight Quantum Sensor Models Research Report

Field of View of Apogee and SenEye Quantum Sensors Research Report

Directional Response of Apogee and Hydrofarm Quantum Meters Research Report

Apogee vs. LI-COR Quantum / PAR Sensors

Journal Articles

Comparison of Light-emitting Diode and High-pressure Sodium Light Treatments for Hydroponics Growth of Boston Lettuce

The Effect of Daily Light Integral on Bedding Plant Growth and Flowering

CO2Fluxes Over an old, Temperate Mexed Fores in Northeastern China

Will Photosynthesis of Maize (Zea Mays) in the US Corn Belt increase in future CO2Rich Atmospheres? An Analysis of Diurnal Courses of CO2uptake under Free-air Concentration Enrchment (FACE)

Biomass Production and Pigment Accumulation in Kale Grown Under Increasing Photoperiods

Photosynthetic Irradiance and Nutrition Effects on Growth of English Ivy in Subirrigation Systems

Free-Air Carbon Dioxide Enrichment of Soybean

Cuttings of Impatiens, Pelargonium, and Petunia Propagated under Light-emitting Diodes and High-pressure Sodium Lamps Have Comparable Growth Morphology, Gas Exchange, and Post-transplant Performance

Intermittent Light from a Rotating High-pressure Sodium Lamp Promotes Flowering of Long-day Plants

Low-temperature Storage Influences Morphological and Physiological Characteristics of Nonrooted Cuttings of New Guinea Impatiens

Effects of Enhanced Ultraviolet-B Radiation and Antioxidative-type Plant Growth Regulators on Rice Leaf Photosynthetic Rate, Photochemistry, and Physiology

Photosynthetic Daily Light Integral during Propagation Influences Roothing and Growth of Cutting and Subsequent Development of New Guinea Impatiens and Petunia

Comparison of Intracanopy Light-emitting Diode Towers and Overhead High-pressure Sodium Lamps for Supplemental Lighting of Greenhouse-grown Tomatoes

Photochemical Bleaching of Fluorescent Dissolved Organic Matter in the Subtropical North Pacific Ocean

FAQs
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PQ-510 Package: microCache and Full-spectrum Quantum with 2 meter cable
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PQ-510 Package: microCache and Full-spectrum Quantum with 2 meter cable

$612.00
MQ-500: Full-Spectrum Quantum Meter
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MQ-500: Full-Spectrum Quantum Meter

$532.00
MQ-501: Handheld Full-spectrum Quantum Meter
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MQ-501: Handheld Full-spectrum Quantum Meter

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MQ-510: Full-Spectrum Underwater Quantum Meter
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MQ-510: Full-Spectrum Underwater Quantum Meter

$538.00
Apogee Instruments SQ-500 Full-spectrum Quantum Sensor
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SQ-500-SS: Full-Spectrum Quantum Sensor

$388.00
Apogee Instruments SQ-512 Amplified 0-2.5 V Full-spectrum Quantum Sensor
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SQ-512-SS: Amplified 0-2.5 V Full-Spectrum Quantum Sensor

$438.00
Apogee Instruments SQ-514 Full-spectrum Quantum Sensor
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SQ-514-SS: Full-Spectrum 4-20 mA output

$488.00
Apogee Instruments SQ-515  Amplified 0-5 V Full-spectrum Quantum Sensor
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SQ-515-SS: Amplified 0-5 V Full-Spectrum Quantum Sensor

$438.00
Apogee Instruments SQ-520 USB Smart Full-spectrum Quantum Sensor
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SQ-520: Full-Spectrum Smart Quantum Sensor (USB)

$438.00
SQ-521 SDI-12 Digital Output Full-spectrum Quantum Sensor
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SQ-521-SS SDI-12 Digital Output Full-spectrum Quantum Sensor

$488.00
Apogee Instruments SQ-522 Full-spectrum Quantum Sensor
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SQ-522-SS Modbus Digital Output Full-spectrum Quantum Sensor

$488.00
AA-100: Protective Carrying Case
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AA-100: Protective Carrying Case

$24.00
AL-100: Solar Sensor Leveling Plate
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AL-100: Solar Sensor Leveling Plate

$44.00
AL-120 Solar Mounting Bracket with Leveling Plate
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AL-120 Solar Mounting Bracket with Leveling Plate

$64.00
310: Sensor Wand
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310: Sensor Wand

$62.00
320 Water Submersible Sensor Wand
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320 Water Submersible Sensor Wand

$62.00
The AM-001 Meter Mounting Bracket is designed for handheld meters with solar radiation sensors attached via cable (MQ-200, MQ-500, MU-200, MP-200). The bracket mounts the sensor to the back of the meter, as seen in the image to the right, making it easier for the user to take sample measurements with the sensor and meter.
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AM-001: Meter Mounting Bracket

$18.00
ac - 100:通信电缆
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ac - 100:通信电缆

$62.00
AB-100: Meter Battery
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AB-100: Meter Battery

$5.00

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