Reference Manual
00809-0100-4799, Rev BA
September 2002
Model 3244MV
1-2
OVERVIEW
Transmitter
Enhanced measurement capability allows the Model 3244MV to communicate
multiple variables to a Profibus-PA host or configuration tool. This
temperature transmitter has the ability to accept simultaneous inputs from two
temperature sensing elements. The differential temperature measurement
capability can be used to detect sensor drift in a dual-element sensor. The
Model 3244MV with Profibus-PA combines the effects of transmitter drift,
sensor interchangeability error, temperature effects, and reference accuracy
to better account for actual process conditions and to assure maximum
accuracy.
The Model 3244MV with Profibus-PA provides superior performance in
non-critical applications involving basic process monitoring as well as
simultaneous measurement of separate and independent temperature points
with one transmitter. With this feature instrument costs are reduced by as
much as 50 percent. In addition, the multi-drop capability of Profibus-PA
results in additional savings through reduced wiring costs.
P
ROFIBUS
Technology
Profibus-PA is an all digital, serial, two-way communication system that
interconnects field equipment such as sensors, actuators, and controllers.
Profibus-PA is a Local Area Network (LAN) for instruments used in both
process and manufacturing automation. The profibus environment is the base
level group of digital networks in the hierarchy of plant networks.
Profibus-PA communication retains the desirable features of the 4–20 mA
analog system, including a standardized physical interface to the wire,
bus-powered devices on a single pair of wires, and intrinsic safety options. It
also enables additional capabilities, such as the following:
• increased capabilities due to full digital communications
• reduced wiring and wire terminations due to multiple devices on one
pair of wires
• increased selection of suppliers due to interoperability
• reduced loading on control room equipment with the distribution of
some control and input/output functions to field devices
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