SF-421-SS: Radiation Frost Detector (SDI-12)

$350.00

The SF-421-SS has an SDI-12 digital output and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The detector contains a precision thermistor that mimics a leaf. The SF-421-SS provides close approximations of leaf temperatures and has a temperature measurement range of -50 to 70 C. Typical applications include leaf temperature estimates in cropped fields, orchards, and vineyards. Leaf temperatures returned by the detector can then be used to alert growers to the potential of frost damage to crops. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration. While most users choose to mount the SF-411-SS to a branch or stick using zip ties, the AM-260 mounting fixture can be used as a more permanent mounting option.

 

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

• Product Manual

• Specification Sheet

• Technical Drawing

• Videos

 

MORE INFORMATION ON APOGEE RADIATION FROST DETECTORS >> click here

Full Description
Where to Buy

The SF-421-SS has an SDI-12 digital output and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The detector contains a precision thermistor that mimics a leaf. The SF-421-SS provides close approximations of leaf temperatures and has a temperature measurement range of -50 to 70 C. Typical applications include leaf temperature estimates in cropped fields, orchards, and vineyards. Leaf temperatures returned by the detector can then be used to alert growers to the potential of frost damage to crops. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration. While most users choose to mount the SF-411-SS to a branch or stick using zip ties, the AM-260 mounting fixture can be used as a more permanent mounting option.

 

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

• Product Manual

• Specification Sheet

• Technical Drawing

• Videos

 

MORE INFORMATION ON APOGEE RADIATION FROST DETECTORS >> click here

Current Stock:
Measurement Range -50 to 70 C Measurement Uncertainty 0.1 C (from 0 to 70 C), 0.2 C (from -25 to 0 C), 0.4 C (from -50 to -25 C) Measurement Repeatability Less than 0.05 C Non-stability (Long-term Drift) Less than 0.2 C per year (when used in non-condensing environments where the annual average temperature is less than 30 C; continuously high temperatures or continuously humid environments increase drift rate) Equilibration Time 10 s Response Time Fastest data transmission rate for SDI-12 circuitry is 1 s Self-heating Less than 0.01 C Operating Environment -50 to 70 C, 0 to 100% relative humidity Input Voltage Requirement 5.5 to 24 V DC Current Drain 1.56 mA (quiescent), 1.93 mA (active) Dimensions 17.5 cm length, 2.2 cm pipe diameter, 6.0 cm disk diameter Mass 75 g Cable 5 m of three conductor, shielded, twisted-pair wire; additional cable available in multiples of 5 m; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions) Warranty 4 years against defects in materials and workmanship Manufactured Made in the USA