S2-431-SS SDI-12 Red - Far-red Sensor

$558.00

The S2-431-SS Red - Far-red sensor is a two-channel digital sensor with SDI-12 communication protocol. The sensor features a rugged, aluminum housing that is fully-submersible and built to withstand harsh conditions, and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The sensor cable includes an IP68 marine-grade stainless-steel cable connector to simplify sensor removal and replacement from permanent installations for maintenance and calibration. Typical applications include 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.

 

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The S2-431-SS Red - Far-red sensor is a two-channel digital sensor with SDI-12 communication protocol. The sensor features a rugged, aluminum housing that is fully-submersible and built to withstand harsh conditions, and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The sensor cable includes an IP68 marine-grade stainless-steel cable connector to simplify sensor removal and replacement from permanent installations for maintenance and calibration. Typical applications include 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.

 

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

 

MORE INFORMATION ON APOGEE RED - FAR-RED SENSORS >> click here

Current Stock:
Power Supply 5.5 to 24 V DC Current Draw 1.4 mA (quiescent), 1.8 mA (active) Calibration Factor Custom for each sensor and stored in firmware Calibration Uncertainty ± 5 % Output Range SDI-12 Wavelength Ranges 645 to 665 nm ± 5 nm (Red); 720 to 740 nm ± 5 nm (Far-Red) Measurement Range 0 to 400 µmol mˉ² sˉ¹ (Red and Far-Red) Measurement Repeatability Less than 1 % Long-term Drift Less than 2 % per year Response Time Less than 0.6 s Non-linearity Less than 1 % (up to 400 µmol mˉ² sˉ¹) (Red and Far-Red) Field of View 180° Directional (Cosine) Response ± 2 % at 45˚, ± 5 % at 75˚ zenith angle Temperature Response Less than 0.1 % per C Housing Anodized aluminum body with acrylic diffuser IP Rating IP68 Operating Environment -40 to 70 C; 0 to 100 % relative humidity Dimensions 30.5 mm diameter, 37 mm height Mass (with 5 m of cable) 140 g Cable 5 m of shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires; stainless steel (316), M8 connector Warranty 4 years against defects in materials and workmanship