Emerson Rosemount 644 Reference Manual page 66

Section 3: Hardware installation
April 2015
Use the following procedure to install the meter.
1.
2.
3.
4.
5.
6.
Note
Observe the following LCD display temperature limits:
Operating: –40 to 175 °F (–40 to 80 °C)
Storage: 0 to 185 °F (–40 to 85 °C)
56
If the transmitter is installed in a loop, secure the loop and disconnect the power. If the
transmitter is installed in an enclosure, remove the cover from the enclosure.
Decide meter orientation (the meter can be rotated in 90° increments). To change
meter orientation, remove the screws located above and below the display screen. Lift
the meter off the meter spacer. Rotate the display top and re-insert it in the location
that will result in the desired viewing orientation.
Reattach the meter to the meter spacer using the screws. If the meter was rotated 90°
from its original position it will be necessary to remove the screws from their original
holes and re-insert them in the adjacent screws holes.
Line up the connector with the pin socket and push the meter into the transmitter until
it snaps into place.
Attach the meter cover. The cover must be fully engaged to meet explosion-proof
requirements.
Use a Field Communicator, AMS software tool to configure the meter to the desired
display.
Reference Manual
00809-0200-4728, Rev RA
Hardware Installation