Reference Manual
00809-0100-4021, Rev FB
August 2011
2-9
Rosemount 3144P
LCD Display Transmitters ordered with the LCD display option (code M5) are shipped with
the LCD display installed. After-market installation of the LCD display on a
conventional 3144P transmitter requires a small instrument screwdriver and
the LCD display kit, which includes:
• LCD display assembly
• Extended cover with cover O-ring in place
• Captive screws (quantity 2)
• 10-pin interconnection header
To install the LCD display:
1. If the transmitter is installed in a loop, set the loop to manual (HART) /
out-of-service (F
OUNDATION Fieldbus) mode and disconnect the power.
2. Remove the housing cover from the electronics side of the transmitter.
Do not remove the transmitter covers in explosive atmospheres with a
live circuit.
3. Ensure that the transmitter write protect switch is set to the Off position.
If transmitter security is On, the transmitter cannot be configured to
recognize the LCD display. If security On is desired, configure the
transmitter for the LCD display, and then install the meter.
4. Insert the interconnection header in the 10-pin socket on the face of the
electronics module. Insert the pins into the electronics LCD interface.
5. The meter can be rotated in 90-degree increments for easy viewing.
Position one of the four 10-pin sockets on the back of the meter to accept
the interconnection header.
6. Attach the LCD display assembly to the interconnection pins, then thread
and tighten the LCD display screws into the holes on the electronics
module.
7. Attach the extended cover; tighten at least one-third turn after the O-ring
contacts the transmitter housing. Both transmitter covers must be fully
engaged to meet explosion proof requirements.
8. Apply power and set the loop to automatic (HART) / in-service
(F
OUNDATION Fieldbus) mode.
Once the LCD display is installed, configure the transmitter to recognize the
meter option. Refer to “LCD Display Options” on page 3-21 (HART) or “LCD
Transducer Block” on page 4-12 (F
OUNDATION fieldbus).
NOTE
Observe the following LCD display temperature limits:
Operating:–4 to 185 °F (–20 to 85 °C)
Storage:–50 to 185 °F (–45 to 85 °C)
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