Apogee Instruments SQ-645 Manuale d'uso - Pagina 6

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Apogee Instruments SQ-645 Manuale d'uso

SPECIFICATIONS

Power Supply
Current Draw
Sensitivity
Calibration Factor
Calibration
Uncertainty
Output Range
Measurement
Range
Measurement
Repeatability
Long-term Drift
(Non-stability)
Non-linearity
Response Time
Field of View
340 to 1040 nm ± 5 nm (wavelengths where response is greater than 50 %; see Spectral Response
Spectral Range
Directional
(Cosine) Response
Azimuth Error
Tilt Error
Temperature
Response
Uncertainty in
Daily Total
Housing
IP Rating
Operating
Environment
Dimensions
Mass (with 5 m of
cable)
5 m of two conductor, shielded, twisted-pair wire; TPR jacket; pigtail lead wires; stainless steel (316),
Cable
Warranty
Calibration Traceability
Apogee Instruments SQ-600 series quantum light pollution sensors are calibrated through side-by-side comparison
to the mean of four transfer standard quantum light pollution sensors under a reference lamp. The transfer
standard quantum light pollution sensors are recalibrated with a quartz halogen lamp traceable to the National
Institute of Standards and Technology (NIST).
SQ-642-SS
5 to 24 V DC
12.5 mV per µmol m
-2
-1
0.08 µmol m
s
per mV
± 5 % (see Calibration Traceability below)
0 to 2.5 V
Less than 1 % (up to 200 µmol m
± 2 % at 45° zenith angle, ± 5 % at 75° zenith angle (see Directional Response below)
Anodized aluminum body with acrylic diffuser
-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
4 years against defects in materials and workmanship
12 V is 57 µA
-2
-1
s
0 to 200 µmol m
-2
s
-1
Less than 0.5 %
Less than 2 % per year
Less than 1 ms
180°
below)
Less than 0.5 %
Less than 0.5 %
-0.11 ± 0.04 % per C
Less than 5 %
IP68
30.5 mm diameter, 37 mm height
140 g
M8 connector
SQ-645-SS
5.5 to 24 V DC
-2
-1
25 mV per µmol m
s
-2
-1
0.04 µmol m
s
per mV
0 to 5 V
-2
s
-1
)