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NOTICE
The grounding rod is not furnished.
Figure 4-4: Interior ground lug, lower enclosure
•
Resistance between the copper-clad steel ground rod and the earth ground must not
exceed 25 Ohms.
•
On ATEX-certified units, the external ground lug must be connected to the customer’s
protective ground system via 9 AWG (6 mm
2
) ground wire. After the connection is
made, apply a non-acidic grease to the surface of the external ground lug to prevent
corrosion.
•
The equipment-grounding conductors used between the gas chromatograph (GC) and
the copper-clad steel ground rod must be sized according to your local regulations; the
following specifications apply in the US.
Length
Wire
15 ft (4.57 m) or less
8 AWG, stranded, insulated copper
15 ft (4.57 m) to 30 ft (9.14 m)
6 AWG, stranded, insulated copper
30 ft (9.14 m) to 100 ft (30.48 m)
4 AWG, stranded, insulated copper
•
All interior enclosure equipment-grounding conductors must be protected by metal
conduit.
•
External equipment that is connected to the GC should be powered via isolation
transformers to minimize the ground loops caused by the internally shared safety and
chassis grounds.
•
All process signal wiring should be of a single, continuous length between field devices
and the GC. If, however, the length of the conduit runs require that multiple wiring
pulls be made, the individual conductors must be interconnected with suitable
terminal blocks.
Installation and start-up
Reference Manual
June 2022
2-3-9000-744
52
Emerson.com/Rosemount
Содержание Rosemount 700XA
Страница 1: ...Reference Manual 2 3 9000 744 Rev L June 2022 Rosemount 700XA Gas Chromatograph ...
Страница 6: ...TxD TD or Sout Transmit data or signal out 6 ...
Страница 30: ...Overview Reference Manual June 2022 2 3 9000 744 30 Emerson com Rosemount ...
Страница 100: ...Installation and start up Reference Manual June 2022 2 3 9000 744 100 Emerson com Rosemount ...
Страница 117: ...Figure 5 10 LSIV exploded view Reference Manual Operation and maintenance 2 3 9000 744 June 2022 Rosemount 700XA 117 ...
Страница 182: ...Operation and maintenance Reference Manual June 2022 2 3 9000 744 182 Emerson com Rosemount ...
Страница 223: ...Figure A 19 Chromatogram menu Reference Manual Local operator interface LOI 2 3 9000 744 June 2022 Rosemount 700XA 223 ...
Страница 262: ...Local operator interface LOI Reference Manual June 2022 2 3 9000 744 262 Emerson com Rosemount ...
Страница 270: ...Micro flame photometric detector µFPD Reference Manual June 2022 2 3 9000 744 270 Emerson com Rosemount ...
Страница 278: ...Pre defined Modbus map files Reference Manual June 2022 2 3 9000 744 278 Emerson com Rosemount ...
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