线缆长度可达 25 m
概览
CS610用于TDR100为核心的系统。建议CS610用于典型土壤（土壤容积电导率 ≤1.5 dS/m）。CS610的线缆采用RG8同轴缆，线缆长度可以大于 15 m；从探头顶端到TDR100 时域反射仪主机的最大距离为 25 m。CS610探头的3根钢针的直径较大，并用大块环氧树脂封装，可安装在严酷的环境中。
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技术说明
CS610充当导波器，沿着探针的阻抗随周围土壤的介电常数变化而变化。因为介电常数的大小主要与含水量大小相关，所以由反射测量结果可以解析出土壤体积含水量。土壤容积电导率可由发射脉冲的衰减程度测定得到。
Campbell Scientific为我们TDR100/TDR200系统提供了6种TDR探头。它们具有不同的钢针和接口线缆，可适用于不同类型的土壤和不同长度的线缆。除了CS610之外，其它可用探头为CS605、CS630、CS635、CS640和CS645。
产品规格
| Maximum Soil Bulk Electrical Conductivity | ≤ 1.4 dS/m |
| Spacing between Outer Rods | 4.5 cm (1.77 in.) |
| Rod Diameter | 0.48 cm (0.187 in.) |
| Rod Length | 30 cm (12 in.) |
| Epoxy Head Dimensions | 7 x 10.8 x 1.9 cm (2.8 x 4.3 x 0.7 in.) |
| Weight | 363 g (13 oz) without cable |
| Cable Weight | 272 g (10 oz) per 3.1 m (10 ft) of cable |
常见问题解答
CS610-L: 1
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In applications where TDR probes are used to measure soil water content, the maximum distance from the TDR probe back to the TDR100/TDR200 (even through one or more multiplexers) cannot exceed 15 m (50 ft) when using RG58 coaxial cable; the CS605-L, CS630-L, and CS640-L TDR probes have an RG58 cable. When using low-loss coaxial cable, the distance cannot exceed ≈25 m (80 ft); the CS610-L, CS635-L, and CS645-L TDR probes have a low-loss coaxial cable.
In slope stability and rock mass deformation applications, the maximum coaxial cable length should not exceed ≈1 mile (5,280 ft). The maximum combined length of all SDM cables in the system should not exceed ≈76 m (250 ft).