Services Available | |
---|---|
Repair | No |
Calibration | Yes |
Free Support | No |
LI200X使用硅光电检测器测量全太阳和天空辐射。它直接地连接到我们的数据采集器,广泛用于太阳、农业和气象等应用。
LI200X 使用固定在余弦校正过的头部的硅光电检测器来测量太阳辐射。校准参考是 Eppley精密光谱太阳辐射表(PSP)。LI200X 精确测量400 到 1100 nm波段内的全太阳和天空辐射。校准到这个波段的传感器不应当用在冠层下或人工光源中。,传感器的线缆上配有并联电阻,将微安信号转换成毫伏信号,这样LI190SB就可以直接由坎贝尔数据采集器来测量。
LI200X的线缆中包含环氧树脂封装的完成电路,标准化传感器的校准系数,使得无需改变乘数和偏移量值就可以互换传感器。
LI-200X传感器的标准输出是0.005 mV 每 W m-2,在全太阳辐射(1000 W m-2)下可提供5 mV的信号。我们所有的数据采集器,除了CR200(X)系列,都能测量该输出。
Light Spectrum Waveband | 400 to 1100 nm |
Accuracy | Absolute error in natural daylight is ±5% maximum (±3% typical) |
Sensitivity | 0.2 kW m-2 mV-1 |
Linearity | Maximum deviation of 1% up to 3000 W m-2 |
Shunt Resistor | Adjustable, 40.2 to 90.2 ohm (factory set to the above sensitivity) |
Stability | < ±2% change over a 1 year period |
Response Time | 10 μs |
Temperature Dependence | 0.15% per °C (maximum) |
Cosine Correction | Cosine corrected up to 80° angle of incidence |
操作温度范围 |
-40° to +65°C The overmolding that protects the completion circuit in the cable may crack if the temperature drops below -40°C. |
Relative Humidity Range | 0 to 100% |
Detector | High stability silicon photovoltaic detector (blue enhanced) |
Sensor Housing | Weatherproof anodized aluminum case with acrylic diffuser and stainless-steel hardware |
Diameter | 2.38 cm (0.94 in.) |
Height | 2.54 cm (1.00 in.) |
Weight | 28 g (1 oz) |
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Product | Compatible | Note |
---|---|---|
21X (retired) | ||
CR10 (retired) | ||
CR10X (retired) | ||
CR200X (retired) | ||
CR206X (retired) | ||
CR211X (retired) | ||
CR216X (retired) | ||
CR23X (retired) | ||
CR295X (retired) | ||
CR3000 (retired) | ||
CR500 (retired) | ||
CR5000 (retired) | ||
CR510 (retired) | ||
CR6 | ||
CR800 (retired) | ||
CR850 (retired) | ||
CR9000 (retired) |
To ensure accurate measurements, the sensor should be leveled using a LI2003S leveling fixture, which incorporates a bubble level and three adjusting screws. The LI2003S leveling fixture mounts to a tripod or tower using the CM225 mount. For most applications, Campbell Scientific recommends attaching the CM225 to a CM202, CM204, or CM206 crossarm. The CM225 can also be attached to a tripod or tower mast.
One differential analog input channel per probe is required.
LI200X-L: 6
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The LI190SB-L measures photosynthetically active radiation (PAR), a spectral range of solar radiation from 400 to 700 nm. This is the energy that plants use during photosynthesis. Measurements with the LI190SB-L are reported as photosynthetic photon flux density (PPFD).
The LI200X-L measures total solar radiation from 400 to 1100 nm. Measurements are usually reported in units of W/m2.
The information included on a calibration sheet differs with each sensor. For some sensors, the sheet contains coefficients necessary to program a data logger. For other sensors, the calibration sheet is a pass/fail report.
This depends on the information contained in the calibration sheet:
大多数 Campbell Scientific 传感器的型号中都带有 –L,它表示用户指定线缆长度。如果传感器型号名称列有 –LX (这里 “X” 是其它的某个字符), 那么该传感器需要用户指定长度,但线缆尾端会配有用于某个独特系统的特殊快速接头:
如果一个传感器的主型号数字的后面没有被指定 –L 或其它的 –LX 字符,那么该传感器将具有固定的线缆长度。在产品页面订购栏中 (Ordering tab) 的描述字段的末尾,会列出线缆的长度。例如 034B-ET 型号的描述字段含有信息:Met One风传感器适用于ET气象站,67英寸线缆 (Met One Wind Set for ET Station, 67 inch Cable)。产品按固定的线缆长度做尾端处理,默认是尾线方式。
如果线缆尾端配有用于某个独特系统的特殊快速接头,则型号尾部的字符会指定该传感器用于哪一个系统。例如,034B-ET 型号表明该传感器是一个 034B 且用于 ET107 系统。
不是每一种传感器都有不同的线缆尾端选项。通过查找传感器产品页面的订购栏 (Ordering tab) 中的两个位置,可以检查某种特定传感器的可用的线缆尾端选项:
如果传感器以 –ET, –ETM, –LC, –LQ, 或 –QD 等版本的型号供应,那么线缆尾端选项已经反映在该传感器的产品型号中。例如,034B 以 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, 和 034B-QD 等型号供应。
所有其它的线缆尾端选项,如果可用,会列在该传感器产品页面的订购栏 (Ordering tab) 中的线缆尾端选项 (“Cable Termination Options) 区域。例如,034B-L 风速风向传感器具有 –CWS, –PT, 和 –PW 等线缆尾端选项,显示在 034B-L 产品页面的 订购栏 (Ordering tab) 位置。
注: 当更新的产品添加到我们的库存中时,一般来说,我们会在单个传感器的产品型号下面列出多种线缆尾端选项,而不是创建多个产品型号。例如,HC2S3-L 具有 –C 线缆尾端选项用于连接到 CS110,而我们并没有使用 HC2S3-LC 产品型号。
Campbell Scientific 的很多传感器都有可行的不同线缆尾端处理选项,包括以下几种:
注: 线缆尾端选项的可行性因传感器而异。例如,传感器可能会有 无选项、两个选项或几个选项可供选择。如果预期的选项没有列在所指定的传感器中,请联系 Campbell Scientific 的应用工程师寻求帮助。