Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
3-8
Figure 3-1. Change in Input versus
Change in Output with Damping
Enabled.
Differential Temperature
The Model 3244MV transmitter can accept any two inputs and display
the differential temperature between them. Use the following
procedure to configure the transmitter to measure differential
temperature.
NOTE
This procedure assumes that you wish to report differential
temperature as the primary variable analog signal. If this is not the
case, assign differential temperature to the secondary, tertiary, or
quaternary variable.
1. From the HOME screen, select
1 Device Setup
,
1 Process
Variable, 8 Variable Re-Map,
to prepare to set the transmitter to
display differential temperature. Select
OK
after you set the
control loop to manual.
2. Select
1 Diff
from the Primary Variable (PV) menu.
3. Select
3 Snsr 1
or
4 Snsr 2
from the Secondary Variable (SV)
menu.
4. Select the remaining sensor from the Tertiary Variable (TV)
menu.
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0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5 10.0
Input Value
Output Value
Time (Seconds)
T
e
m
p
er
at
u
re
Model 3244MV
HART Fast Keys
1,1,8,1
