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Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
3-8
HART
Sensor 1 Serial Number
The Sensor 1 S/N variable provides a location to list the serial number of the
attached sensor. It is useful for identifying sensors and tracking sensor
calibration information.
AMS
Right click on the device and select “Configuration Properties” from the
menu. Select the Sensor 1 tab to configure the Sensor 1 Serial #.
Apply changes made (see “Apply AMS Changes” on page 3-5).
Sensor 2 Serial Number
The Sensor 2 S/N variable provides a location to list the serial number of a
second sensor.
AMS
Right click on the device and select “Configuration Properties” from the
menu. Select the Sensor 2 tab to configure the Sensor 2 Serial #.
Apply changes made (see “Apply AMS Changes” on page 3-5).
2-Wire RTD Offset
The 2-wire Offset command allows the user to input the measured lead wire
resistance, which will result in the transmitter adjusting its temperature
measurement to correct the error caused by this resistance. Due to a lack of
lead wire compensation within the RTD, temperature measurements made
with a 2-wire RTD are often inaccurate.
To utilize this feature perform the following steps:
1. Measure the lead wire resistance of both RTD leads after installing the
2-wire RTD and the 3144P.
2. From the HOME screen, select 1 Device Setup, 3 Configuration,
2 Sensor Configuration, 3 Sensor 1 Setup, 6 2-Wire Offset.
3. Enter the total measured resistance of the two RTD leads at the 2-Wire
Offset prompt. Enter this resistance as a negative (–) value to ensure
proper adjustment.The transmitter then adjusts its temperature
measurement to correct the error caused by lead wire resistance.
4. Repeat Steps 1 through 3 for sensor 2, selecting 1 Device Setup, 3
Configuration, 2 Sensor Configuration, 4 Sensor 2 Setup, 6 2-Wire
Offset.
AMS
Right click on the device and select “Configuration Properties” from the
menu. Select the Sensor 1 (or Sensor 2) tab to configure the 2 Wire Offset.
Apply changes made (see “Apply AMS Changes” on page 3-5).
HART Fast Keys 1, 3, 2, 3, 3
HART Fast Keys 1, 3, 2, 4, 3
HART Fast Keys 1, 3, 2, 3, 6