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Rosemount Model 3144 and 3244MV Smart Temperature Transmitters
3-14
DIAGNOSTICS AND
SERVICE
The following commands enable various transmitter diagnostics,
testing, and measurement functions. Use these commands to customize
the transmitter to your particular application.
Test Device
The
Test Device
command initiates a more extensive diagnostics routine
than that performed continuously by the transmitter. The Test Device
menu lists the following options:
•
Status
lists error codes. “On” indicates a problem, and “Off”
indicates that there are no problems.
•
Self Test
initiates a transmitter self test. Error codes are
displayed if there is a problem.
•
Master Test
sends out a master reset command that restarts and
tests the transmitter. Performing a master test has the same
effect as briefly powering down the transmitter and then
powering it back up.
Loop Test
The
Loop Test
command verifies the output of the transmitter, the
integrity of the loop, and the operations of any recorders or similar
devices installed in the loop. To initiate a loop test, perform the
following procedure:
1. Connect a reference meter to the transmitter. To do so, either
connect the meter to the test terminals on the transmitter
terminal block, or shunt the power to the transmitter through the
meter at some point in the loop.
2. From the Home screen, Select
1 Device Setup, 2 Diagnostics
and
Service, 2 Loop Test,
to prepare to perform a loop test.
3. Select
OK
after you set the control loop to manual. The
communicator displays the loop test menu.
4. Select a discreet milliamp level for the transmitter to output. At
the “Choose analog output” prompt, select
1 4mA, 2 20mA,
or
select
3 Other
to manually input a value between 4 and 20 mA.
5. Check the meter installed in the test loop to verify that it reads
the value you commanded the transmitter to output. If the
readings do not match, either the transmitter requires an output
trim, or the meter is malfunctioning.
After completing the test procedure, the display returns to the loop test
screen and allows you to choose another output value.
HART Fast Keys
1,2,1
HART Fast Keys
12,2