Perform A Loop Test - Emerson Rosemount 3144P Quick Start Manual

Quick Start Guide
7

Perform a loop test

The loop test verifies transmitter output, loop integrity, and operation of any
recorders or similar devices installed in the loop.
The following procedures are for the device dashboard - device revisions 5
and 7, DD v1.
7.1 Initiate a loop test
Procedure
1. Connect an external ampere meter in series with the transmitter loop
(so the power to the transmitter goes through the meter at some
point in the loop).
2. From the Home screen, select 3 Service Tools → 5 Simulate → 1
Perform Loop Test
The communicator displays the loop test menu.
3. Select a discrete milliampere level for the transmitter to output.
4. In the test loop, check that the transmitter's actual mA output and
the HART mA reading are the same value.
If the readings do not match, either the transmitter requires an
output trim or the current meter is malfunctioning.
After completing the test, the display returns to the loop test screen
where you can choose another output value.
5. To end the loop test, select 5 End and Enter.
7.2 Initiate simulation alarm
Procedure
1. From the Home screen, select 3 Service Tools → 5 Simulate → 1
Perform Loop Test → 3 Simulate Alarm.
The transmitter will output the alarm current level based on the
configured alarm parameter and switch settings.
2. Select 5 End to return the transmitter to normal conditions.
18
a) At Choose Analog Output, select 1 4 mA or 2 20 mA. If you
want to enter a different value, select 4 Other to manually
input a value between 4 and 20 milliamperes.
b) Select Enter to show the fixed output.
c) Select OK.
March 2021
Rosemount 3144P