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Emerson 3051S Especificaciones Pagina 28

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Reference Manual
00809-0200-4801, Rev CA
July 2010
Rosemount 3051S Series
2-14
Transmitter Grounding Always ground the transmitter case in accordance with national and local
electrical codes. A ground can be connected to the 3051S Transmitter either
by an external ground lug or the internal ground lug. Both options can be seen
in Figure 2-6.
Figure 2-6.
The most effective transmitter case grounding method is a direct connection
to earth ground with minimal (< 1 ) impedance.
NOTE
Grounding the transmitter case using the threaded conduit connection may
not provide a sufficient ground. The transient protection terminal block (Option
Code T1) will not provide transient protection unless the transmitter case is
properly grounded. Use the above guidelines to ground the transmitter case.
Do not run transient protection ground wire with signal wiring; the ground wire
may carry excessive current if a lightning strike occurs.
ROTATING THE
LCD DISPLAY
Transmitters ordered with the LCD display will be shipped with the display
installed. The display can be rotated in 90 degree increments. To rotate the
display:
1. Ensure the power is removed from the transmitter.
2. Remove the cover to expose the LCD Display.
3. Squeeze the two tabs that hold the meter in and gently pull.
4. Ensure the four-pin connector is still in the transmitter circuit board. If the
connector stayed in the meter, remove it from the meter and insert it into
the transmitter circuit board.
5. Get the LCD in the orientation desired, squeeze the two tabs to remove
the meter and gently insert the meter in to the electronics circuit board. If
the meter does not insert correctly, check the alignment of the four-pin
connector and try again.
6. Install the meter cover and tighten to ensure metal-to-metal contact.
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