	SQ-110/120	SQ-212型/222	SQ-214型/224	SQ-215型/225	SQ-300 Series	SQ-420型	SQ-421型	SQ-422型
电源	Self-powered	5 to 24 V DC	7 to 24 V DC	5.5 to 24 V DC	Self-powered	5V USB电源	5.5 to 24 V DC	5.5 to 24 V DC
Current Draw	-	10 µA	22 mA maximum; 2 mA quiescent	10 µA	-	61 mA when logging	1.4 mA（静态）；1.8 mA（有源）	RS-232 quiescent 36.87 mA, active 37.06 mA; RS-485 quiescent 37.37 mA, active 42.30 mA
Output (Sensitivity)	0.2 mV per µmol m^-2s^-1	0.625 mV per µmol m^-2s^-1	0.004 mA per µmol m^-2s^-1	1.25 mV per µmol m^-2s^-1	0.2 mV per µmol m^-2s^-1	-	-	-
Output Type	0 to 800 mV	0 to 2.5 V	4 to 20 mA	0 to 5 V	0 to 800 mV	USB	SDI-12	Modbus
分辨率	-	-	-	-	-	0.1 µmol m^-2s^-2	-	-
Calibration Factor (reciprocal of sensitivity)	5 µmol m^-2s^-1每毫伏	1.6 µmol m^-2s^-1每毫伏	250 µmol m^-2s^-1每毫伏	0.8 µmol m^-2s^-1每毫伏	5 µmol m^-2s^-1每毫伏	Custom for each sensor and stored in the firmware	Custom for each sensor and stored in the firmware	Custom for each sensor and stored in the firmware
Calibration Uncertainty	± 5 %	± 5 %	± 5 %	± 5 %	± 5 %	± 5 %	± 5 %	± 5 %
Measurement Repeatability	Less than 0.5 %	Less than 0.5 %	Less than 0.5 %	Less than 0.5 %	Less than 0.5 %	Less than 0.5 %	Less than 1 %	Less than 1 %
Long-term Drift	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year
Non-linearity	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)	Less than 1 % (up to 4000 µmol m^-2s^-1)
响应时间	Less than 1 ms	Less than 1 ms	Less than 1 ms	Less than 1 ms	Less than 1 ms	软件每秒更新一次	Less than 0.6 s	-
Field of View	180°	180°	180°	180°	180°	180°	180°	180°
Spectral Range	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）	410至655 nm（响应大于最大值50%的波长）
Spectral Selectivity	从469到655nm小于10%	从469到655nm小于10%	从469到655nm小于10%	从469到655nm小于10%	从469到655nm小于10%	从469到655nm小于10%	从469到655nm小于10%	从469到655nm小于10%
方向（余弦）响应	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle	± 5 % at 75° zenith angle
Temperature Response	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C	0.06 ± 0.06 % per C
Operating Environment	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中	-40至70摄氏度；相对湿度0至100%；可浸入30米深的水中
Dimensions	24 mm diameter, 33 mm height	30.5 mm diameter, 37 mm height	30.5 mm diameter, 37 mm height	30.5 mm diameter, 37 mm height	SQ-313/316/323/326: 500 mm x 15 mm x 15 mm, SQ-311/321: 700 mm x 15 mm x 15 mm	24 mm diameter, 33 mm height	30.5 mm diameter, 37 mm height	30.5 mm diameter, 37 mm height
Mass (with 5 m of cable)	90 g	140 g	140 g	140 g	SQ-313/316/323/326: 275 g, SQ-311/321: 375 g	90 g	140 g	140 g