SPECIFICATIONS
Calibration Traceability
Apogee MQ series quantum meters are calibrated through side-by-side comparison to the mean of four transfer
standard quantum sensors under high output T5 cool white fluorescent lamps. The reference quantum sensors are
recalibrated with a 200 W quartz halogen lamp traceable to the National Institute of Standards and Technology
(NIST).
± 5 % (see calibration Traceability below)
Measurement
Repeatability
Long-term Drift
(Non-stability)
Less than 1 % (up to 3000 µmol m
-2
s
-1
)
410 to 655 nm (wavelengths where response is greater than 50 % of maximum;
see Spectral Response below)
Directional (Cosine)
Response
± 5 % at 75° zenith angle (see Cosine Response below)
0.06 ± 0.06 % per C (see Temperature Response below)
0 to 50 C; less than 90 % non-condensing relative humidity up to 30 C; less than 70 %
non-condensing relative humidity from 30 to 50 C; separate sensors can be
submerged in water up to depths of 30 m
126 mm length; 70 mm width; 24 mm height
24 mm diameter; 33 mm height
2 m of two conductor, shielded, twisted-pair wire; TPR jacket (high water resistance,
high UV stability, flexibility in cold conditions)
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