这个产品是无效的且被替换: SR05-L.
| Services Available | |
|---|---|
| Repair | Yes |
| Calibration | Yes |
| Free Support | Yes |
概览
LP02 是ISO 二级太阳辐射传感器，监测全太阳波段范围内的太阳辐射。可直接连接到Campbell Scientific数据采集器，广泛应用于气象学领域。
优势与特点
- Compatible with most Campbell Scientific data loggers
- Measures reflected solar radiation when inverted
- Provides measurements in direct sunlight, under plant canopies, when the sky is cloudy, and in artificial light
- Includes bubble level and leveling screws, eliminating the need for a separate leveling base and simplifying installation
- Acceptable for providing the solar radiation data used in stability estimations
- Dome protects thermopile and allows water to roll off of it
- Designed for continuous indoor and outdoor use
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技术说明
LP02 使用由穹顶罩保持的高质量黑化热电堆来测量太阳辐射。黑化热电堆为全太阳辐射波段提供了平直的波段响应，这使得LP02可用于冠层下或灯光光源下，也适用于天空多云的条件，以及用于反射辐射测量。
LP02 包括1个水平泡、3个可调节螺丝和1个线缆压盖。水平泡和可调节螺丝可让传感器调节到水平状态，而不需要单独的水平底座。线缆压盖方便线缆的更换。
LP02 产生毫伏信号输出，由坎贝尔数据采集器直接测量。
两个LP02 短波辐射表可以背靠背固定在一起，组成一个低成本的返照率表；请联系坎贝尔以寻求更多信息。
产品规格
| Sensor | Blackened thermopile protected by a dome |
| Measurement Description | Monitors solar radiation for the full solar spectrum range |
| Spectral Range | 285 to 3000 nm |
| Maximum Irradiance | 2000 W/m2 |
| Sensitivity | 15 µV/W/m2 (nominal) |
| Operating Temperature Range | -40° to +80°C |
| Temperature Dependence | < 0.15% per °C |
| ISO Classification | ISO 9060:2018 spectrally flat Class C (second class) |
| Body Diameter | 7.8 cm (3.1 in.) |
| Dome Diameter | 3.0 cm (1.2 in.) |
| Height | 5.9 cm (2.3 in.) |
| Weight | 363 g (0.8 lb) with 4.6 m (15 ft) cable |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
数据采集器
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | ||
| CR10 (retired) | ||
| CR10X (retired) | ||
| CR200X (retired) | ||
| CR206X (retired) | ||
| CR211X (retired) | ||
| CR216X (retired) | ||
| CR23X (retired) | ||
| CR295X (retired) | ||
| CR300 | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR500 (retired) | ||
| CR5000 (retired) | ||
| CR510 (retired) | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) | ||
| CR9000 (retired) |
Additional Compatibility Information
Mounting
The LP02 includes a bubble level and three adjusting leveling screws, which allow the sensor to be leveled without using a leveling base. The CM225 Solar Sensor Mounting Stand is used to attach the sensor to a crossarm. The CM225 consists of a rectangular plate, mounting bracket, U-bolts, washers, lock washers, and nuts. The LP02 should be mounted away from all obstructions and reflective surfaces that might adversely affect the measurement.
If the sensor needs to be mounted at an angle, a CM255 or CM255LS adjustable-angle mount can be used instead.
相关技术文档
常见问题解答
LP02-L: 11
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Perhaps, but it is more likely that there is a wiring or programming issue. If the pyranometer is reading 0 W/m2, separate it from the data logger and measure the resistance across the sensor leads. If the reading is approximately 0 ohms, the sensor has likely been damaged and will need to be repaired or replaced. For information about the process of returning equipment to Campbell Scientific, refer to the Repair and Calibration page.
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Yes. It is recommended to clean the dome weekly. However, depending on the environment the pyranometer is deployed in, it may need to be cleaned more frequently—perhaps daily. The frequency of the cleaning schedule varies based on the amount of buildup on the dome caused by precipitation, dust, and biological films.
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Yes. Depending on the application, it is recommended to have the sensor calibrated every one to two years.
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The LP02-L measures solar irradiance with primary units of W/m2 and over a range of 0 to ≈1000 W/m2 for terrestrial radiation. Other units can be measured with modifications to the measurement instruction in the data logger’s program.
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The LP02-L produces an analog millivolt signal that is linearly related to the amount of solar radiation incident on the device. This relationship is based on a calibration coefficient that is entered in the data logger program.
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For best results, use a differential voltage instruction, such as VoltDiff(). A single-ended voltage instruction, VoltSe(), could be used; however, this would not take full advantage of input reversal, which allows for the subtraction in common-mode gain errors. For more information, see the “The Benefits of Input Reversal and Excitation Reversal for Voltage Measurements” white paper.
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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：
- –LC 表示用户指定线缆长度，所配快速接头用于 ET107, CS110, 或已停产的 Metdata1 系统。
- –LQ 表示用户指定线缆长度，所配快速接头用于 用于 RAWS-P 气象站。
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。
- 以 –ET 结尾的型号的传感器配备快速接头，用于 ET107 气象站。
- 以 –ETM 结尾的型号的传感器配备快速接头，用于 ET107 气象站，但它们也含有一个特殊的系统安装支架，在订购一个备件时，所配的支架经常是便捷实用的。
- 以 –QD 结尾的型号的传感器配备快速接头，用于 RAWS-F 快速配置气象站。
- 以 –PW 结尾的型号的传感器配备快速接头，用于 PWENC 预接线机箱或预接线系统。
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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：
- 产品型号
- 线缆尾端选项列表
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。
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The LP02-L is a sensor manufactured by Hukseflux, whereas the CMP3-L is manufactured by Kipp & Zonen. Both sensors meet the ISO classification of a Second Class pyranometer.
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Because of the loss of IR radiation, nearly all thermopile instruments typically have a negative offset. This offset is most easily visible at night-time, when a small negative value is read instead of zero. This same offset is present during the daytime, but it is not as visible because of the large solar signal.
Another common issue involves leveling an instrument. Leveling a thermopile instrument can cause errors in the direct beam component because the cosine response is not correct. These errors are more notable when the sun is close to the horizon because the angle is so shallow.