兼容大多数Campbell Scientific数据采集器
概览
CMP3 是 Kipp & Zonen 生产的 ISO二级短波辐射表，它输出毫伏信号，可直接接入到Campbell Scientific数据采集器，广泛应用于气象学领域的太阳辐射测量。
优势与特点
- Includes a white snap-on sun shield that reduces the sensor's temperature
- 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
CMP3-L以保护在单层玻璃穹顶罩中的高质量黑化热电堆来测量太阳辐射。它在全太阳波段内具有平直的光谱响应，因而适用于冠层下环境、或灯泡光源监测，也适用于多云条件下的太阳辐射监测，还可倒置安装用于监测反射短波辐射。
CMP3-L含有一个直接固定的白色防辐射盖子，用于减小太阳辐射增温。自带的水平泡和可调水平螺丝，使得传感器并不需要额外的调平底座。
CMP3-L产生微伏级信号，可由Campbell Scientific数据采集器直接测量。
两个CMP3-L短波辐射表可以背靠背安装，组成一个经济的反照度表。更多信息请联系Campbell Scientific。
产品规格
| Sensor | Blackened thermopile protected by a dome |
| Measurement Description | Monitors solar radiation for the full solar spectrum range |
| Spectral Range | 300 to 2800 nm |
| Maximum Irradiance | 2000 W/m2 |
| Sensitivity | 5 to 20 µV/W/m2 |
| Operating Temperature Range | -40° to +80°C |
| Temperature Dependence | ±5% (-10° to +40°C) |
| Non-Linearity | < ±2.5% (0 to 1000 W/m2) |
| Tilt Response | < ±2% at 1000 W/m2 (±80°) |
| ISO Classification | Class C (second class) |
| Dome Diameter | 3.2 cm (1.3 in.) |
| Width | 7.9 cm (3.1 in.) |
| Height | 6.7 cm (2.6 in.) |
| Weight | 600 g (1.2 lb) with 10 m (32.8 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 |
|---|---|---|
| CR1000X | ||
| CR300 | ||
| CR3000 (retired) | ||
| CR310 | ||
| CR350 | ||
| CR6 | ||
| CR800 (retired) | ||
| CR850 (retired) |
Additional Compatibility Information
Mounting
The CMP3-L includes a bubble level and adjusting leveling screws, which allow the sensor to be leveled without using a leveling base. The CM225 Solar Sensor Mounting Stand is typically used to attach the sensor to a mast, crossarm, or pole (1.0 in. to 2.1 in. outer diameter). The CM225 consists of a rectangular plate, mounting bracket, U-bolts, washers, lock washers, and nuts. The CMP3-L should be mounted away from all obstructions or reflective surfaces that might adversely effect the measurement.
Alternatively, the CM245 Adjustable Angle Mounting Stand may be used. It includes slots that can be adjusted to any angle from horizontal to vertical.
相关技术文档
常见问题解答
CMP3-L: 9
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This may be caused by conditions in which the dome of the sensor is warmer than the thermopile. Most users see a small negative value at night. This offset, as it is commonly termed, can be important for monitoring the performance of the sensor.
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If the dome becomes damaged, contact Campbell Scientific or Kipp & Zonen to discuss replacing the dome. The sensor will need to be sent to Kipp & Zonen for any repairs.
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The CMP3-L has a passive thermopile that produces a small analog voltage that can be equated to a representative amount of incident solar radiation. Campbell Scientific recommends connecting the leads of the CMP3-L to a Campbell Scientific data logger through a differential analog input terminal.
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No. The sensor needs to be connected to a data acquisition system, such as a Campbell Scientific data logger.
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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.
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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：
- –PT (–PT w/Tinned Wires，镀锌尾线) 是默认选项，不显示在产品行中，而其它选项会显示在产品行中。线缆末端为尾线方式，可直接连接到数据采集器。
- 在 –C (–C w/ET/CS110 Connector，CS110快速接头) 选项中，线缆尾端所配的快速接头可连接到 CS110 电场计或 ET-系列的气象站。
- 在 –CWS (–CWS 带 CWS900 快速接头) 选项中，线缆尾端所配的快速接头可连接到 CWS-系列的接口。连接到 CWS900-系列接口使得传感器可被用于无线传感器网络中。
- 在 –PW (–PW 带预接线快速接头) 选项中，线缆尾端所配的快速接头可连接到预接线机箱上。
- 在 –RQ (–RQ 带RAWS 快速接头) 选项中，线缆尾端所配的快速接头可连接到 RAWS-P 永久配置远程自动气象站。
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。