Apogee Instruments SQ-610 Instrukcja obsługi - Strona 13
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Sensor Calibration
Apogee unamplified SQ-610 ePAR Sensors have standard calibration factors of exactly:
Multiply the calibration factor by the measured mV signal to convert sensor output to photon flux density in units
of µmol m
-2
s
-1
:
Calibration Factor (100 µmol m
100
Full Sunlight
-2
-1
(2400 µmol m
s
)
100 µmol m
-2
-1
s
per mV) * Sensor Output Signal (mV) = Photon Flux Density (µmol m
*
Example of photon flux density measurement with an
Apogee model SQ-610 ePAR Sensor. Full sunlight yields a
photon flux density on a horizontal plane of approximately
2400 µmol m
This signal is converted to photon flux density by
multiplying by the calibration factor of 100 mol m
mV.
Sensor Output
24 mV
-2
-1
s
per mV
24
=
2400
-2
-1
s
. This yields an output signal of 24 mV.
-2
-1
s
)
-2
-1
s
/