43
Reference Manual
00809-0100-4021, Rev GC
Section 3: HART commissioning
April 2014
3.7.8
Terminal (body) temperature
The
Terminal Temp
command sets the temperature units to indicate the temperature at the
transmitter terminals.
3.7.9
Dual-sensor configuration
Dual-sensor configuration sets the functions that can be used with a dual-sensor configured
transmitter, including Differential Temperature, Average Temperature, First Good Temperature.
Differential temperature
Field communicator
The Rosemount
3144P configured for a dual-sensor can accept any two inputs then display the
differential temperature between them. Use the following procedure with Traditional Fast Keys
to configure the transmitter to measure differential temperature:
Note
This procedure reports the differential temperature as the primary variable analog signal. If this
is not needed, assign differential temperature to the secondary, tertiary, or quaternary variable.
Note
The transmitter determines the differential temperature by subtracting the reading of Sensor 2
from Sensor 1 (S1 – S2). Ensure this order of subtraction is consistent with the desired reading
for the application. Refer to
, or inside the transmitter terminal-side cover
for sensor wiring diagrams.
If using an LCD display for local indication, configure the meter to read the appropriate variables
by using
“LCD display options” on page 94
.
Average temperature
HART 5 Fast Keys
2, 2, 7, 3
HART 7 Fast Keys
2, 2, 7, 3
HART 5 Fast Keys
2, 2, 3
HART 7 Fast Keys
2, 2, 3
HART 5 Fast Keys
2, 2, 3, 1
HART 7 Fast Keys
2, 2, 3, 1
HART 5 Fast Keys
2, 2, 3, 3
HART 7 Fast Keys
2, 2, 3, 3
Содержание Rosemount
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