概览
CS650-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气象站定制，如果需要其它接头类型，请选择CS650 。
图像
技术说明
CS650-LC含有连接到印刷电路板的2根30 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。
CS650-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 ≤3 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。
产品规格
| Sensing Volume | 7800 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 | 300 mm (11.8 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 | 280 g (9.9 oz) without cable |
Current Drain |
|
| Active (3 ms) |
|
| Quiescent | 135 µA typical (@ 12 Vdc) |
Electrical Conductivity |
|
| Range for Solution EC | 0 to 3 dS/m |
| Range for Bulk EC | 0 to 3 dS/m |
| Accuracy | ±(5% of reading + 0.05 dS/m) |
| Precision | 0.5% of BEC |
Relative Dielectric Permittivity |
|
| Range | 1 to 81 |
| Accuracy |
|
| Precision | < 0.02 |
Volumetric Water Content |
|
| -NOTE- | Using Topp Equation (m3/m3) |
| Range | 5% to 50% |
| Accuracy | ±3% VWC (typical in mineral soils, where solution EC ≤ 3 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 |
兼容性
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Miscellaneous
| Product | Compatible | Note |
|---|---|---|
| ET106 (retired) | ||
| ET107 (retired) | ||
| METDATA1 (retired) | ||
| RAWS-H (retired) | ||
| RAWS-P (retired) |
Additional Compatibility Information
RF Considerations
External RF Sources
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.
Interprobe Interference
Multiple CS650-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.
Installation Tools
14384 Pilot Tool
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.
14383 Installation Tool
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.
下载
CS650 / CS655 Firmware v.2 (429 KB) 02-12-2015
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.