	SU-200-SS	SU-202-SS	SU-205-SS
Power Supply	Self-powered	3.3 to 24 V DC	5.5 to 24 V DC
Output (Sensitivity)	0.1 mV per W m^-2; 0.03 mV per µmol m^-2 s^-1	25 mV per W m^-2; 8.33 mV per µmol m^-2 s^-1	50 mV per W m^-2; 16.67 mV per µmol m^-2 s^-1
Calibration Factor (reciprocal of sensitivity)	10 W m^-2 per mV; 30 µmol m^-2 s^-1 per mV	0.04 W m^-2 per mV; 0.12 µmol m^-2 s^-1 per mV	0.02 W m^-2 per mV; 0.06 µmol m^-2 s^-1 per mV
Calibration Uncertainty	± 10 %	± 10 %	± 10 %
Output Range	0 to 10 mV	0 to 2.5 V	0 to 5 V
Measurement Range	0 to 100 W m^-2	0 to 100 W m^-2	0 to 100 W m^-2
Measurement Repeatability	Less than 0.5 %	Less than 0.5 %	Less than 0.5 %
Long-term Drift (Non-stability)	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year
Non-linearity	Less than 1 %	Less than 1 %	Less than 1 %
Response Time	Less than 1 ms	Less than 1 ms	Less than 1 ms
Field of View	180°	180°	180°
Spectral Range	300 to 400 nm	300 to 400 nm	300 to 400 nm
Directional (Cosine) Response	± 2 % at 45°; ± 5 % at 75° zenith angle	± 2 % at 45°; ± 5 % at 75° zenith angle	± 2 % at 45°; ± 5 % at 75° zenith angle
Temperature Response	-0.1 % per C	-0.1 % per C	-0.1 % per C
Operating Environment	-35 to 85 C, 0 to 100 % relative humidity	-35 to 85 C, 0 to 100 % relative humidity	-35 to 85 C, 0 to 100 % relative humidity
Dimensions	30.5 mm diameter, 37 mm height	30.5 mm diameter, 37 mm height	30.5 mm diameter, 37 mm height
Mass (with 5 m of cable)	140 g	140 g	140 g
Warranty	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship

Power Supply

Self-powered

3.3 to 24 V DC

5.5 to 24 V DC

Output (Sensitivity)

0.1 mV per W m^-2;
0.03 mV per µmol m^-2 s^-1

25 mV per W m^-2;
8.33 mV per µmol m^-2 s^-1

50 mV per W m^-2;
16.67 mV per µmol m^-2 s^-1

Calibration Factor (reciprocal of sensitivity)

10 W m^-2 per mV;
30 µmol m^-2 s^-1 per mV

0.04 W m^-2 per mV;
0.12 µmol m^-2 s^-1 per mV

0.02 W m^-2 per mV;
0.06 µmol m^-2 s^-1 per mV