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Red - Far-Red Sensors

Apogee Instruments Red - Far-Red sensors combine two photodetectors designed to measure the wavelength ranges and peaks of red and far-red light, which influence photosynthetic and morphogenic activity.
Two-channel sensor for measuring the Red / Far-red ratio (RFR) for ecological applications, including the effect of spectral quality on phytochrome. The RF ratio influences plant height, leaf expansion rates, and other photobiology and plant morphogenic responses.
This sensor is a research-grade, cost-effective two-channel sensor for monitoring plant light environments, including calculation of the red to far-red ratio (red photon flux density / far-red photon flux density) and far-red fraction (far-red photon flux density / sum of red and far-red photon flux densities).
Spectral Response
The red - far-red sensor has a spectral range of 645 to 665 nm ± 5 nm (red) and 720 to 740 nm ± 5 nm (far-red). The spectral responses can be seen in the graph below.
Graph showing the spectral response of the red - far-red sensor (spectral range of 645 to 665 nm ± 5 nm (red) and 720 to 740 nm ± 5 nm (far-red)).
Rugged, Self-cleaning Housing
The patented domed shapped sensor head (diffuser and body) facilitates runoff of dew and rain to keep the sensor clean and minimizes errors caused by dust blocking the radiation path. Sensors are housed in a rugged, anodized aluminum body and electronics are fully-potted.
An Apogee Red - Far-Red sensor head
A Red - Far-Red sensor in a controlled environment chamber.
Typical Applications
Applications include monitoring plant light environments, researching plant morphogenic activity, and photobiology studies.
Mounting
The AL-120 Solar Mounting Bracket with Leveling Plate facilitates mounting the sensor to a mast or pipe. The AL-100 Solar Sensor Leveling Plate is designed to level the sensor while sitting on a flat surface or mounting to a surface.
Output Options
Available as an analog output or in digital SDI-12 or Modbus communication protocols.
High Quality Cable
Pigtail-lead sensors feature an IP68, marine-grade stainless-steel cable connectors built directly into the sensor head to simplify sensor removal for maintenance and recalibration. Cable is shielded-twisted-pair wire with a TPR jacket for high water resistance, UV stability, and flexibility in cold conditions.
Warranty and Support
All Apogee products are backed by an industry-leading four year warranty and outstanding customer support
Learn more about red - far-red sensor specifications.

Specifications

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Watch videos to learn more about our red - far-red sensors.

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Product support information for red - far-red sensors.

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About Apogee Instruments, Inc.

Address:
721 West 1800 North
Logan, UT 84321
United States of America

Hours: Monday-Friday 8 AM- 5 PM MST

Main Line / Order Status: (435) 792-4700
or sales@apogeeinstruments.com

Technical Sales and Support: (435) 245-8012
or techsupport@apogeeinstruments.com

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  • products
    • Quantum (PAR & ePAR) Sensors / Meters
    • Pyranometers
    • PAR, Daily Light Integral, and Photoperiod Meters
    • Oxygen Sensors
    • Chlorophyll Concentration
    • Infrared Radiometers
    • Spectroradiometers
    • Temperature Sensors
    • NDVI Sensors
    • PAR Meters for Aquariums
    • UV Sensors
    • Guardian CEA Multi-Sensor Monitor
    • Photometric Sensor
    • Net Radiometer
    • Cloudburst Weighing Precipitation Gauge
    • microCache Bluetooth Micro Logger
    • Barometric Pressure
    • Solar Energy PV Monitoring
    • Accessories
    • Pyrgeometers
    • Red - Far-red and PAR-FAR Sensors
    • Aspirated Radiation Shield
    • Humidity Probes
    • Refurbished Products
    • Radiation Frost Detector
    • Replacement Cables
    • Calibration Services
  • About Us
    • Contact Us
    • ISO 9001:2015 Certification
    • International Distributors
    • Careers
    • Apogee News
    • Newsletters
    • Company History
    • Event Calendar
    • Leadership Team
    • Apogee Cares
    • Our Founder - Dr. Bruce Bugbee
    • Wholesale Application
    • Customer Satisfaction Survey
  • Integrators
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