Apogee SQ-222 Instrukcja obsługi - Strona 6
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SPECIFICATIONS
Power Supply
Sensitivity
Calibration Factor
(Reciprocal of Sensitivity)
Calibrated Output Range
Calibration Uncertainty
Measurement Repeatability
Long-term Drift
(Non-stability)
Non-linearity
Response Time
Field of View
Spectral Range
Spectral Selectivity
Directional (Cosine) Response
Temperature Response
Operating Environment
Dimensions
Mass
Cable
Calibration Traceability
Apogee SQ series quantum sensors are calibrated through side-by-side comparison to the mean of four Apogee model SQ-
110 or SQ-120 transfer standard quantum sensors under high output T5 cool white fluorescent lamps. The transfer standard
quantum sensors are calibrated through side-by-side comparison to the mean of at least three LI-COR model LI-190R
reference quantum sensors under high output T5 cool white fluorescent lamps. The reference quantum sensors are
recalibrated on a biannual schedule with a LI-COR model 1800-02 Optical Radiation Calibrator using a 200 W quartz halogen
lamp. The 1800-02 and quartz halogen lamp are traceable to the National Institute of Standards and Technology (NIST).
SQ-212/SQ-222
3.3-24 V DC with a nominal current
draw of 300 µA
1.0 mV per µmol m
-2
s
1.0 µmol m
-2
s
-1
per mV
0 to 2.5 V
± 5 % (see Calibration Traceability below)
Less than 1 % (up to 2500 µmol m
maximum PPFD measurement is 2500 µmol m
410 to 655 nm (wavelengths where response is greater than 50 % of maximum; see
Spectral Response below)
Less than 10 % from 469 to 653 nm
± 5 % at 75º zenith angle (see Cosine Response below)
0.06 ± 0.06 % per C (see Temperature Response below)
-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths
24 mm diameter; 28 mm height
90 g (with 5m of lead wire)
5 m of two 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
SQ-215/SQ-225
5.5-24 V DC** with a nominal current
draw of 300 µA
**Sensors with a serial number smaller than 3762
should not be powered with more than 5 V DC
-1
2.0 mV per µmol m
0.5 µmol m
0 to 5.0 V
Less than 0.5 %
Less than 2 % per year
-2
s
-1
Less than 1 ms
180º
of 30 m
-2
s
-1
-2
s
-1
per mV
;
-2
s
-1
)
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