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SPECIFICATIONS
Power Supply
Output (sensitivity)
Calibration Factor (reciprocal of
sensitivity)
Calibration Uncertainty
Output Range
Measurement Range
Measurement Repeatability
Long-term Drift
Non-linearity
Response Time
Field of View
Spectral Range
Directional (Cosine) Response
Temperature Response
Operating Environment
Dimension
Mass (5 m of cable)
Cable
Calibration Traceability
Apogee UV series sensors are calibrated through side-by-side comparison to the mean of four transfer standard UV
sensors under UV-enhanced T5 fluorescent tubes. The transfer standard UV sensors are calibrated through side-
by-side comparison to an Apogee model PS-300 spectroradiometer under sunlight (clear sky conditions) in Logan,
Utah. The PS-300 is calibrated with a quartz halogen lamp traceable to the National Institute of Standards and
Technology (NIST).
SU-202-SS
3.3 to 24 V DC
25 mV per W m
-2
;
8.33 mV per µmol m⁻² s⁻¹
0.04 W m
-2
per mV;
0.12 µmol m⁻² s⁻¹ per mV
0 to 2.5 V
300 to 400 nm (wavelengths where response is greater than 10 % of maximum; see
Spectral Response below)
± 2 % at 45°, ± 5 % at 70°
-30 to 85 C; 0 to 100 % relative humidity
30.5 mm diameter, 37 mm height
5 m of shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability,
flexibility in cold conditions); pigtail lead wires; stainless steel (316), M8 connector
SU-205-SS
5.5 to 24 V DC
50 mV per W m
16.67 mV per µmol m⁻² s⁻¹
0.02 W m
0.06 µmol m⁻² s⁻¹ per mV
± 10 %
0 to 5 V
0 to 100 W m
-2
Less than 0.5 %
Less than 2 % per year
Less than 1 %
Less than 1 ms
180°
Less than 0.1 % per C
140 g
-2
;
-2
per mV;