Copyright 2022Baker Hughes Company.
English–DPI610E Instruction Manual | 225
HART Service Methods
12.4.3 PRESSURE ZERO TRIM
A Zero Trim is a method used to cancel out zero-shift that could arise from sensor zero drift or
change in installation orientation. It allows for the characterization data to be adjusted by
correcting the zero (pressure) value when a “zero” input is applied.
Note:
Zero trim should only ever be applied to Gauge or Differential pressure sensors.
Step 1
Select
PRESSURE ZERO TRIM
from
the
HART: Service Methods
screen
(See Figure 12-6 on page 219).
Make sure the
HART
device has a
secure process connection to the
DPI 610E.
Apply 0 pressure using the
pump/volume adjuster on the
instrument or vent the system.
Wait and make sure the reading is
stable.
Note
: the signal measured by the
DPI 610E is denoted by the icon
,
while that measured by the HART
device is denoted by
.
Select the
Trim
softkey.
Step 2
Select
OK
in the popup message
window to accept the Trim.
Or select
CANCEL
to return to the
previous step.
Step 3
When the Zero Trim is complete, use
the
Back
softkey to exit or repeat
the Trim if required.
