Grounding The Device - Emerson FB1100 Instruction Manual

Emerson FB1100 Flow Computer Instruction Manual
D301752X012
July 2017
2.8

Grounding the Device

The flow computer includes a grounding lug on the terminal plate.
Figure 2-17: Ground Lug
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DANGER
EXPLOSION HAZARD: Ensure the area in which you perform this operation is non-hazardous.
Performing this operation in a hazardous area could result in an explosion.
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Ground Lug
Once you have installed the unit, run a ground wire between the ground lug and a known
good earth ground. You route the ground wire through one of the conduit fittings.
Use stranded copper wire to earth ground, and keep the length as short as possible.
Clamp or braze the ground wire to the ground bed conductor (typically a stranded copper
AWG 0000 cable installed vertically or horizontally).
Using a high-wattage soldering iron, tin the wire ends with solder before you insert them
into the chassis ground lug.
Run the ground wire so that any routing bend in the cable has a minimum radius of 30.5
cm (12 inches) below ground and 20.4 cm (8 inches) above ground.
For more information on grounding or if your installation uses cathodic protection, refer to
Site Considerations for Equipment Installation, Grounding, and Wiring (D301452X012).
Installation