apogee与li-cor量子传感器

	远地点SQ-500	LI-COR LI-190R
Sensitivity (mV perµ摩尔/ m2/s)	0.01（常数）	0.003-0.006 (with 604 Ω resistor)(Variable depending on sensor)
Calibration Factor (µ摩尔/ m2/s每MV）	100 (Fixed multiplier for drop-in replacement)	165-330（具有604Ω电阻）（变量取决于传感器）
Calibration Uncertainty	5 %	5 %
Non-linearity	1 % up to 4000 µmol/m2/s(2X Full sunlight)	1 % up to 10,000 µmol/m2/s(5X Full sunlight)
定向（余弦）响应	查看下面的图表	查看下面的图表
光谱响应	查看下面的图表	查看下面的图表
Temperature Response	-0.11±0.04％/每C	± 0.15 % per C
Operating Environment	-40 °C to 70 °C; 0 % to 100 % relative humidity; can be submerged in water up to depths of 30 m	-40°C至65°C;0％至95％相对湿度，非凝结
住房	Anodized aluminum with epoxy-potted electronics cavity	Anodized aluminum with O-ring seal
Detachment for Calibration	线缆连接器30厘米距离传感器头部	Sensor top is detachable by removing three screws
U.S.A. Manufacturer List Price	Similar, but the LI-COR LI-190R is ~25 % more than the Apogee SQ-500. LI-COR with a fixed multiplier option is ~50 % higher cost.

DIRECTIONAL (COSINE) RESPONSE

（两个传感器的误差均为60°的天顶角度小于2％。）

通过与来自短波辐照度测量计算的PPFD（蓝线为AM反应和红线，在阳光下（曙光至黄昏）确定六复制的余量和三个重复的LI-COR量子传感器（在曙光上看到照片）的余弦响应是平均pm响应）。

These measurements closely matched the directional response measured in the laboratory for the Apogee (black line) and the directional response from the product manual for the LI-COR (black line). Directional errors were less than 2 % up to zenith angles of about 60° and less than 5 % up to zenith angles of about 75°. Quantum sensors from other manufacturers had larger directional errors (Blonquist和Johns。5月，2018年).

光谱响应

(Spectral errors for both sensors were less than 4 % for all lights tested.)

Spectral responses compared to defined PAR (black line). The response of the Apogee was measured in a monochromator (dark green line is the mean of six replicates, light green lines are data for each replicate). The response of the LI-COR is from the product manual. Spectral responses of quantum sensors from other manufacturers did not match defined PAR as well as these two sensors (Blonquist和Johns。5月，2018年).

光谱误差

Spectral errors for sunlight and common electric lights were calculated from the spectral responses. Spectral errors for both sensors were less than 4 % for all lights tested. Quantum sensors from other manufacturers did not achieve these small spectral errors (Blonquist和Johns。5月，2018年).