Ground The Device - Emerson Rosemount 3308A Reference Manual

Installation
August 2017
3.7

Ground the device

The Rosemount 3308 Series Wireless Guided Wave Radar transmitter operates with the housing
grounded or floating. Floating systems can cause extra noise that may affect many types of readout
devices. If the signal appears noisy or erratic, grounding at a single point may solve the problem.
Grounding of the electronics enclosure should be done in accordance with local and national installation
codes. Grounding is accomplished by using the external case grounding terminal.
Non-metallic tanks
Ground device on non-metallic tanks (e.g. fiberglass tanks) to prevent electrostatic charge build-up.
There is one grounding screw connection provided, located on the housing, see
screw is identified by a ground symbol:
Figure 3-19. Ground Screw
A
A. Ground screw
Note
Always use facility recommended wiring practices.
Note
Flexible twin lead probe or coaxial probe are the recommended choice for non-metallic tanks. Single
lead probes are not suited for non-metallic tanks or open atmosphere applications, due to high
susceptibility to strong electromagnetic fields.
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PRELIMINARY
Reference Manual
00809-0100-4308, Rev CA
Figure 3-19. The ground
Installation