CS645-L 3-Rod 7.5 cm TDR Probe with Low-Loss Cable

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TDR Probes and Installation Tools / CS645-L

CS645-L 3-Rod 7.5 cm TDR Probe with Low-Loss Cable

For Very High Conductivity Soils
Up to 25 m cable length

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概要

The CS645 is used in TDR100- and TDR200-based systems. This probe consists of a Santoprene head, three pointed rods, and a low-loss LMR200DB cable. The length of each rod is 7.5 centimeters, allowing the probe to be used in very high electrical conductivity soils or in laboratory column applications (maximum soil bulk electrical conductivity of 5 deciSiemens/meter). The low-loss cable is suitable for lengths up to 25 meters as measured from the tips of the probe's rods to the reflectometer. A similar probe, the CS640, is available for applications using shorter cable lengths (up to 15 meters). The CS640 and CS645 differ only in their cables.

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類似製品

CS640-L 3-Rod 7.5 cm TDR Probe with Standard Cable

CS605-L 3-Rod TDR Probe with RG58 Cable

CS610-L 3-Rod TDR Probe with RG8 Cable

CS630-L 3-Rod 15 cm TDR Probe with Standard Cable

CS635-L 3-Rod 15 cm TDR Probe with Low-Loss Cable

詳細

The CS645 acts as a wave guide. Impedance along the rods varies with the dielectric permittivity of the surrounding soil. Because the dielectric permittivity of soil primarily depends on the amount of water present, soil volumetric water content can be inferred from the reflected measurements. Soil bulk electrical conductivity is determined from the attenuation of the applied pulse.

仕様

Maximum Soil Bulk Electrical Conductivity	5 dS/m
Rod Diameter	0.16 cm (0.063 in.)
Rod Length	7.5 cm (2.95 in.)
Santoprene Head Dimensions	4.5 x 2.2 x 1.0 cm (1.8 x 0.9 x 0.4 in.)

互換性

注意： 以下は代表的な互換性情報を示しています。互換性のある製品や互換性のない製品をすべて網羅したリストではありません。

Measurement and Control

製品	互換性	注意
SDMX50 (リタイア)
SDMX50LP (リタイア)
SDMX50SP (リタイア)
TDR100 (リタイア)
TDR200

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マニュアル

コンプライアンス

CS645-L EU Declaration of Conformity

よくある質問

CS645-Lに関するよくある質問の数： 1

How far can an SDMX50-series or SDM8X50 multiplexer be separated from a TDR100 or TDR200?

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).

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