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

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.

FOR MORE PRODUCT INFORMATION, CHECK OUT THESE LINKS

• Product Manual

• Specification Sheet

• Technical Drawing

Input Voltage Requirement
5.5 to 24 V DC

Current Draw
1.5 mA (quiescent), 2.0 mA (active)

Calibration Uncertainty (-30 to 65 C)
0.5 C, when target and detector temperature are within 20 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 5 m of lead wire)

Cable
5 m of four conductor, shielded, twisted-pair wire with TPR jacket (high water resistance, high UV stability, flexibility in cold conditions), aditional cable available

Warranty
4 years against defects in materials and workmanship

Manufactured
Made in the USA