Specifications

Reference Manual
MHM-97408, Rev. 2
June 2008
3-13
CSI 9420
Liquid Crystal Display
(LCD)
Transmitters ordered with the LCD will be shipped with the display installed.
The optional LCD can be rotated in 90-degree increments by squeezing the
two tabs, pulling out, rotating and snapping back into place.
If LCD pins are inadvertently removed from the interface board, carefully
re-insert the pins before snapping the LCD back into place.
Use the following procedure and Figure 3-10 to install the LCD:
1. Remove the LCD cover. Do not remove the instrument covers in
explosive environments when the circuit is live.
2. Put the four-pin connector into the interface board, rotate the LCD to
the desired position, and snap into place.
Note the following LCD temperature limits:
Operating:–4 to 175 °F (–20 to 80 °C)
Storage:–40 to 185 °F (–40 to 85 °C)
3. Replace the transmitter cover.
NOTE
Only use Rosemount Wireless LCD Part Number: 00753-9004-0002.
Figure 3-10. Optional LCD
NOTE:
To maximize power module life, it is recommended that you disable the LCD
when not in use. The LCD consumes very little power. Displaying information
on the LCD and leaving it active for a sufficient amount of time for a human
being to read it, however, requires the CSI 9420 to remain “awake” almost
twice as long. Depending on the update rate, disabling the LCD can increase
the life of the power module by as much as 40 percent.
If your CSI 9420 was purchased without the optional LCD, and you wish to
add this later, an upgrade kit is available. Contact your Emerson sales
representative for more information.
Ground the Transmitter The transmitter will operate with the housing either floating or grounded.
However, the extra noise in floating systems affects many types of readout
devices. If the signal appears noisy or erratic, grounding the transmitter at a
single point may solve the problem.
LCD
LCD
Cover
LCD
Pins