Apogee SIL-411 Manual do Proprietário - Página 10

Procurar online ou descarregar pdf Manual do Proprietário para Instrumentos de medição Apogee SIL-411. Apogee SIL-411 20 páginas. Commercial infrared radiometer

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Sensor Calibration

Apogee SIL-111 infrared radiometers are calibrated in a temperature-controlled chamber that houses a custom-

built blackbody cone (target) for the radiation source. During calibration, infrared radiometers (detectors) are held

in a fixture at the opening of the blackbody cone, but are thermally insulated from the cone. Detector and target

temperature are controlled independently. At each calibration set point, detectors are held at a constant

temperature while the blackbody cone is controlled at temperatures below (10 C), above (10 C), and equal to the

detector temperature. The detector temperatures are 10, 25, and 40. Data are collected at each detector

temperature set point, after detectors and target reach constant temperatures.

All Apogee SIL-411 SDI-12 infrared radiometers have sensor-specific calibration coefficients determined during the

custom calibration process. Coefficients are programmed into the microcontroller at the factory. Calibration data

for each sensor are provided on a calibration certificate (example shown on following page).

Calibration overview data are listed in box in upper left-hand corner, temperature errors are shown in graph, and

calibration date is listed below descriptions of calibration procedure and traceability.