Apogee Instruments SIF-121 Benutzerhandbuch - Seite 6
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SPECIFICATIONS
Approximate Sensitivity
(difference between target and detector temperature)
Output from Thermopile
Analog Output from Thermistor
Input Voltage Requirement
Calibration Uncertainty (-20 to 65 C), when target and
detector temperature are within 20 C
Calibration Uncertainty (-40 to 80 C), when target and
detector temperate are different by more than 20 C
(see Calibration Traceability below)
Measurement Repeatability
Stability (Long-term Drift)
Response Time
Field of View
Spectral Range
Operating Environment
Dimensions
Mass
Cable
Warranty
Calibration Traceability
Apogee SIF series infrared radiometers are calibrated to the temperature of a custom blackbody cone held at
multiple fixed temperatures over a range of radiometer (detector/sensor body) temperatures. The temperature of
the blackbody cone is measured with replicate precision thermistors thermally bonded to the cone surface. The
precision thermistors are calibrated for absolute temperature measurement against a platinum resistance
thermometer (PRT) in a constant temperature bath. The PRT calibration is directly traceable to the NIST.
15 µV per C
Approximately -0.825
to 0.825 mV for at
Approximately -0.55 mV to 0.55 mV for a
temperature difference
from -55 to 55 C
0 to 2500 mV (typical, depends on input voltage)
2500 mV excitation (typical, other voltages can be used)
Less than 0.05 C
Less than 2 % change in slope per year when germanium filter is
maintained in a clean condition (see Maintenance and Recalibration
section below)
0.2 s, time for detector signal to reach 95% following a step change
22º half-angle
8 to 14 µm; atmospheric window (see Spectral Response below)
-55 to 80 C; 0 to 100 % relative humidity (non-condensing)
23 mm diameter; 60 mm length
190 g (with 5m of lead wire)
5 m of four conductor, shielded, twisted-pair wire; additional cable
available in multiples of 5 m; santoprene rubber jacket (high water
resistance, high UV stability, flexibility in cold conditions); pigtail lead wires
4 years against defects in materials and workmanship
10 µV per C
10 µV per C
temperature difference from -55 to 55 C
0.2 C
0.5 C
32º horizontal half-
18º half-angle
angle; 13º vertical
half-angle