Electrical Considerations - Emerson Rosemount 2151N Reference Manual

Rosemount 2151N
ELECTRICAL
CONSIDERATIONS
Figure 2-2 – Typical Transmitter
Wiring Connection
Figure 2-3 – Transmitter Supply
Voltage vs. Load
9
This section contains information you should consider when
preparing to make electrical connections to the transmitter.
Read this section carefully before proceeding to the electrical
installation procedure.
Rosemount 2151N transmitters provide a 4-20 mA signal
when connected to a suitable dc power source. Figure 2-2
illustrates a typical signal loop consisting of a transmitter,
power supply, and various receivers (controller, indicator,
computer).
The power supply versus load limit relationship is shown in
Figure 2-3. The loop load is the sum of the resistance of the
signal leads and the load resistance of the receivers. Any
power supply ripple appears in the output signal.
Reference Manual
00809-0000-4851 Rev AD
December 2023
Installation