Emerson Rosemount 3144P - Foundation Fieldbus; Sensor Connections

23
Reference Manual
00809-0100-4021, Rev JA
Installation
April 2017
Installation
2.6.2 FOUNDATION Fieldbus
Figure 2-14. Transmitter Terminal Block
A. Sensor terminals (1–5)
B. Power terminals
C. Ground
2.6.3 Sensor connections
The correct sensor wiring connections to the transmitter sensor terminals are shown in Figure 2-11
(HART) and Figure 2-16 (F
OUNDATION Fieldbus). To ensure an adequate sensor connection, anchor the
sensor lead wires beneath the flat washer on the terminal screw. Do not remove the transmitter cover in
explosive atmospheres if the circuit is live. Both transmitter covers must be fully engaged to meet
explosion-proof requirements. Use extreme caution when making contact with the leads and terminals.
Wiring connection
Wiring connection
(with “T1” integral transient protection option)
Figure 2-15. Sensor Wiring Diagram for FOUNDATION Fieldbus
Rosemount 3144P single-sensor connections
Rosemount 3144P dual-sensor connections
1. Transmitter must be configured for a 3-wire RTD in order to recognize an RTD with a compensation loop.
2. Emerson provides 4-wire sensors for all single-element RTDs. Use these RTDs in 2- or 3-wire configurations by leaving the unneeded leads
disconnected and insulated with electrical tape.
A
C
B
B
C
A
4-wire RTD
and Ohms
T/Cs and
Millivolts
RTD with Compensation
Loop
(1)
2-wire RTD
and Ohms
3-wire RTD
and Ohms
(2)
ΔT/Hot Backup/Dual
Sensor with two
RTDs
ΔT/Hot Backup/Dual
Sensor with two
Thermocouples
ΔT/Hot Backup/Dual
Sensor with RTDs/
Thermocouples
(2)
ΔT/Hot Backup/Dual
Sensor with RTDs/
Thermocouples
(2)
ΔT/Hot Backup/Dual
Sensor with two RTDs
with Compensation
Loop
(2)