5
Reference Manual
00809-0200-4840, Rev BA
Section 2: Transmitter Overview
December 2014
2.4
System architecture
The Rosemount 3107 and 3108 are loop-powered which means they use the same two wires for
both power supply and output signal.
The transmitter can be connected to any suitable direct current (dc) power source using the
factory-fitted two-core, shielded cable.
The output is a 4–20mA analog signal and a digital HART signal.
Note
It is possible to use the multidrop function with the HART protocol (see
this case, communication is restricted to digital since the current is fixed to 4 mA.
The transmitters can easily be configured by using a Rosemount 3490 Series Control Unit.
Alternatively, a Field Communicator, or a PC with AMS
™
Suite: Intelligence Device Manager
software, can be used to configure the transmitter.
Note
The Rosemount 3490 Control Unit software must be version 3.40 or later.
A comprehensive specification for the Rosemount 3107 and 3108 is in the section
Figure 2-3. System architecture
3490
Fn
1
2
3
4
5
6
7
8
9
0
-
.
3491
Model type:
751 Display
Rosemount 3490
Series Controller
Field
Communicator
HART
Modem
AMS
™
Suite:
Intelligent Device Manager
Control System
Remote Temperature Sensor
(Rosemount 3108 only)
Rosemount
3107/3108
Transmitter
4–20 mA / HART
Содержание 3107
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