DAVIS Electronic Rain Counter Uživatelská příručka stáhnout pdf (Strana 44)

C3 User Guide

A5. Device cabling guidelines

Protection

• No cable (or part thereof) should be left exposed to the elements

• The use of rigid electrical conduit is recommended as the most

economical way of effectively protecting cable and wiring above ground

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outdoors

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cabling is protected for its full length

• The bottom entry cable gland as used on the C3 Solar Enclosure is

suitable for a range of conduit diameters up to 25 mm

• The use of standard electrical junction boxes and splitters is recommended

for multiple sensor connections and cabling directions

• Cable suitable for direct burial is recommended where longer cabling

distances are required, this cable still requires additional protection when

above ground to prevent UV degradation

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to be made and housed within conduit junction boxes

• Wadding or expanding foam should be used in the ends of conduit

entering enclosures wherever there is a likelihood of pests nesting

Distance

• Generally any cabling length over a few hundred metres is not cost

effective in terms of installation and maintenance, in these cases additional

telemetry units are recommended

• Switched inputs and RS485 devices will work reliably up to 1 km with the

appropriate cabling

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distances of more than 10 metres

• RS232 device cables should not exceed 10 metres

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DAVIS Electronic Rain Counter Uživatelská příručka Strana 44