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SIL-411: Commercial-Grade SDI-12 Digital Output Standard Field of View Infrared Radiometer Sensor

Updated:2023-05-15

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  • Brand: Apogee
  • Model: SIL-411
  • Description: The SIL-411 has an SDI-12 digital output and 5 m high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The sensor has a 22° half-angle field of
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Product Details

SIL-411: Commercial-Grade SDI-12 Digital Output Standard Field of View Infrared Radiometer Sensor Functional Characteristic:

User's Manual Technical Drawing

The SIL-411 has an SDI-12 digital output and 5 m high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. The sensor has a 22° half-angle field of view and a response time of 0.6 seconds. Typical applications include plant canopy temperature measurement for use in plant water status estimation, road surface temperature measurement of determination of icing conditions, and terrestrial surface (soil, vegetation, water, snow) temperature measurement in energy balance studies.

RESEARCH-GRADE VS COMMERCIAL-GRADE

Research-Grade Commercial-Grade

Accuracy ± 0.2 C from -30 to 65 C ± 0.5 C from 0 to 50 C

Shield Material Powder-coated aluminum with a polished interior Rugged, polished, UV-resistant ASA plastic

Field of View Three circular with two horizontal apertures Single 22° half-angle

Cost More accurate for higher cost Less accurate for lower cost

Cable Connector IP68 stainless-steel cable connector to simplify sensor removal No connector



SIL-411: Commercial-Grade SDI-12 Digital Output Standard Field of View Infrared Radiometer Sensor Drawing:

SIL-411 Drawing

SIL-411: Commercial-Grade SDI-12 Digital Output Standard Field of View Infrared Radiometer Sensor Specification:

Input Voltage Requirement 5.5 to 24 V DC
Current Draw 1.5 mA (quiescent), 2.0 mA (active)
Calibration Uncertainty (0 to 50 C), when target and detector temperature are within 20 C 0.5 C
Measurement Repeatability Less than 0.05 C
Stability (Long-term Drift) Less than 2 % change in slope per year when germanium filter is maintained in a clean condition
Response Time 0.6 s, time for detector signal to reach 95 % following a step change; fastest data transmission rate for SDI-12 circuitry is 1 s
Field of View 22° half angle
Spectral Range 8 to 14 µm; atmospheric window
Operating Environment -50 to 80 C; 0 to 100 % relative humidity (non-condensing)
Dimensions 23 mm diameter, 60 mm length
Mass 190 g (with 5m of lead wire)
Cable 5 m of six conductor, shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires
Warranty 4 years against defects in materials and workmanship

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