28764 SDM8X50 Enclosure

概要

The 28764 is a weather-resistant enclosure that is 10 inches wide and 12 inches tall with two conduits for cable entry. This enclosure houses and protects the SDM8X50 TDR multiplexer. When purchased with the –E option, the SDM8X50 ships with this enclosure and an enclosure supply kit.

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利点と特徴

  • Weather resistant to protect instruments
  • Backplate designed so that Campbell Scientific components mount easily and securely
  • White, UV-stabilized enclosure reflects solar radiation—reducing temperature gradients inside the enclosure without requiring a separate radiation shield

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詳細

The backplate of the enclosure is prepunched with one-inch-on-center holes suitable for attaching the SDM8X50 multiplexer.

The 28764 is shipped with the 7363 Enclosure Supply Kit that consists of desiccant, a humidity indicator card, cable ties, wire tie tabs, putty, grommets, screws, and PVC coupling.

The 28764 has mounting hardware for mounting to a tripod mast or a user-supplied pole with a 1.25 to 2.1 in. diameter. The enclosure has two 1.5 in. diameter cable entry conduits on the underside of the enclosure. Multiple cables can be routed through each conduit. 

仕様

Color White
Construction Fiberglass-reinforced polyester enclosure with door gasket, external grounding lug, stainless-steel hinge, and lockable hasps
Enclosure Classification NEMA 4X (before being modified for cable entry)
Internal Dimensions 30.5 x 25.4 x 11.4 cm (12 x 10 x 4.5 in.)
External Dimensions 34.06 x 29.03 x 13.23 cm (13.41 x 11.43 x 5.21 in.)
Weight 4.1 kg (9.0 lb)

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。

Mounting Equipment

製品 互換性 注意
CM500 (リタイア)
CM505
CM510
CM515

よくある質問

28764に関するよくある質問の数： 2

  1. Are SDMX50-series and SDM8X50 multiplexers only usable with the TDR100 or TDR200 system?
    Yes.
  2. 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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