Emerson 2200S Manuel D’Utilisation
Configuration and Use Manual
75
Testing and Moving to Production
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7.3
Loop testing
A loop test is a means to:
•
Verify that the mA output is being sent by the transmitter and received accurately by the
receiving devices
receiving devices
•
Determine whether or not you need to trim the mA output
Note the following:
•
During the loop test, the transmitter’s mA output will not report process data.
CAUTION!
Do
not use the mA output for process control while you are performing the loop test.
•
If you are using ProLink II or the Communicator, enter the fixed value in the scale that you
specified for the mA measurement point. If you specified “Don’t Know”:
specified for the mA measurement point. If you specified “Don’t Know”:
-
If you are using ProLink II, enter the desired value in one scale and the tool will display
the equivalent value in the other scale.
the equivalent value in the other scale.
-
If you are using the Communicator, you must specify the mA measurement point before
you can continue.
you can continue.
•
The mA reading does not need to be exact. You will correct differences when you trim the mA
output. See Section 7.4.
output. See Section 7.4.
To perform a loop test:
•
Using the display, see Figure 7-4.
•
Using the Communicator, see Figure 7-5.
•
Using ProLink II, see Figure 7-6.