CS655-LC是多参数智能传感器,使用革新的技术监测土壤体积含水量、容积电导率和土壤温度。该传感器用于ET107蒸散气象站。
备注:此线缆接头专门为ET107蒸散气象站定制,如需其它接头类型,请选择CS655 。
CS655-LC含有连接到印刷电路板的2根12 cm长的不锈钢探针。电路板用环氧树脂封装,附着在电路板的带屏蔽线缆提供与数据采集器的连接。
CS655-LC测量传输时间、信号衰减和温度;再从这些原始测量值解析得到介电常数、体积含水量和容积电导率。
测量的信号衰减是用于反射检测的损失效应及传播时间的修正。损失效应修正可以让探头在容积电导率 ≤8 dS m-1 的土壤中,测量出高精度的体积含水量,并不需要实施特定的土壤校准。
由衰减测量还可以计算得到土壤容积电导率。靠近环氧树脂表面的与探针保持热接触的热敏电阻用来测量温度。如果传感器水平安装,可以得到与土壤含水量测量相同深度的精确温度测量。如果以其它的方位安装传感器,那么温度测量只能代表环氧树脂附近探针的区域。
Sensing Volume | 3600 cm3 (~7.5 cm radius around each probe rod and 4.5 cm beyond the end of the rods) |
Electromagnetic | CE compliant (Meets EN61326 requirements for protection against electrostatic discharge and surge.) |
Operational Temperature | -10° to +70°C |
Sensor Output | SDI-12; serial RS-232 |
Measurement Time | 3 ms to measure; 600 ms to complete SDI-12 command |
Power Supply Requirements | 6 to 18 Vdc (Must be able to supply 45 mA @ 12 Vdc.) |
Maximum Cable Length | 610 m (2000 ft) combined length for up to 10 sensors connected to the same data logger control port |
Rod Spacing | 32 mm (1.3 in.) |
Ingress Protection Rating | IP68 |
Rod Diameter | 3.2 mm (0.13 in.) |
Rod Length | 120 mm (4.7 in.) |
Probe Head Dimensions | 85 x 63 x 18 mm (3.3 x 2.5 x 0.7 in.) |
Cable Weight | 35 g per m (0.38 oz per ft) |
Probe Weight | 240 g (8.5 oz) without cable |
Current Drain |
|
Active (3 ms) | 45 mA typical @ 12 Vdc (80 mA @ 6 Vdc, 35 mA @ 18 Vdc) |
Quiescent | 135 µA typical @ 12 Vdc |
Electrical Conductivity |
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Range for Solution EC | 0 to 8 dS/m |
Range for Bulk EC | 0 to 8 dS/m |
Accuracy | ±(5% of reading + 0.05 dS/m) |
Precision | 0.5% of BEC |
Relative Dielectric Permittivity |
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Range | 1 to 81 |
Accuracy |
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Precision | < 0.02 |
Volumetric Water Content |
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-NOTE- | Using Topp Equation (m3/m3) |
Range | 5% to 50% |
Accuracy | ±3% VWC (typical in mineral soils that have solution electrical conductivity ≤ 10 dS/m) |
Precision | < 0.05% |
Soil Temperature |
|
Range | -10° to +70°C |
Accuracy | ±0.5°C (for probe body buried in soil) |
Precision | ±0.02°C |
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Product | Compatible | Note |
---|---|---|
ET106 (retired) | ||
ET107 (retired) | ||
METDATA1 (retired) | ||
RAWS-H (retired) | ||
RAWS-P (retired) |
External RF sources can affect the probe’s operation. Therefore, the probe should be located away from significant sources of RF such as ac power lines and motors.
Multiple CS655-LC probes can be installed within 4 inches of each other when using the standard data logger SDI-12 “M” command. The SDI-12 “M” command allows only one probe to be enabled at a time.
The 14384 Pilot Tool has rods with similar diameters and the same spacing as the probe. The tool can be driven into the soil using force levels that might damage the probe. After removing the 14384, the probe is inserted into the established holes.
The 14383 Installation Tool can be used to help maintain the proper spacing and parallel orientation of rods during insertion. Use of the 14383 may reduce measurement errors by minimizing soil disturbance.
Current CS650 and CS655 firmware.
Note: The Device Configuration Utility and A200 Sensor-to-PC Interface are required to upload the included firmware to the sensor.
CS655-LC: 3
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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:
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。