Copyright 2022Baker Hughes Company.
English–DPI610E Instruction Manual | 221
HART Service Methods
12.4.2 D/A OUTPUT TRIM
The D/A Output trim involves setting the HART device at the analog signal output of 4 and 20 mA
to test that it matches an external standard. If required, a trim is performed at the low value point
and/or the high value point which adjusts the transmitters digital to analog converter.
To perform a D/A Trim:
Step 1
Select
D/A OUTPUT TRIM
from the
HART: Service Methods
screen (See
Figure 12-6 on page 219.)
The screen on the left is the first part of
the D/A trim procedure which focuses
on the Low (value) trim.
The default Low Trim value is 4 mA.
This value can be edited if required by
selecting the
Edit
softkey (Step 2).
If no change is required, select the
Next
softkey to proceed (Step 3).
Step 2
Enter the required Low Trim value and
select the
Tick
softkey to confirm
this value.
Step 3
The Low Trim value has been applied
and the measured value now appears.
Note
: The signal measured by the
DPI 610E is indicated by the icon
,
while that measured by the HART
device is indicated by
.
Make sure that the reading is stable.
To perform the trim at this point, select
the
Trim
softkey.
Step 3 continues on next page
