Oundation Fieldbus Electronics Boards - Emerson Rosemount 8800D Series Reference Manual

Troubleshooting
March 2016
7.5.2 Replacing the F
The flowmeter electronics boards may need to be replaced if they have been damaged or
otherwise become dysfunctional. Use the following procedures to replace electronics
boards in the flowmeter. You will need a small Phillips-head screwdriver and a pliers.
Note
The electronics boards are electrostatically sensitive. Be sure to observe handling
precautions for static-sensitive components.
Remove the electronics boards
1.
2.
Figure 7-7. Electronics Board Assembly
A. Transmitter housing
B. Electronics boards
C. LCD display
D. Electronics board compartment cover
3.
4.
5.
6.
7.
See "Safety messages" on page 81
92
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OUNDATION
Turn off the electric power to the flowmeter.
Unscrew and remove the electronics board compartment cover. If the transmitter
has the LCD display option, the cover will have a glass window.
If the meter has the LCD display option, loosen the two retaining screws. Remove
the LCD display and the 10-pin header connector from the electronics board.
Loosen the three captive screws that anchor the electronics.
Use a pliers or a small flathead screwdriver to carefully remove the sensor cable clip
from the electronics.
Remove thermocouple if the MTA option is installed (requires a 2.5 mm hex
wrench).
Use the handle molded into the black plastic cover of the electronics boards to
slowly pull the boards out of the housing.
for complete warning
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Fieldbus electronics boards
A
B
C
Industry Automation
Reference Manual
00809-0100-4772, Rev FA
D
Troubleshooting
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