Emerson Rosemount 3051CF Series Reference Manual page 99

Reference Manual
00809-0100-4774
Navigate to the Sensor Trim screen and click the button for the type of trim desired. An
automated procedure called a Method guides you through the desired trim procedure.
The automated procedure for upper and lower sensor trims includes steps for
documenting pressure, units, date, and name of person performing the trim and physical
location where the trim was performed. You can enter or edit the information for full
calibrations in Last Calibration Points and Calibration Details.
Note
Generally, only perform a zero trim. For high static pressure applications, you can perform
a lower and upper trim.
Note
Refer to
types of trims. Refer to
instructions to properly drain/vent valves.
Note
If both an upper and lower sensor trim are needed, perform the lower trim first.
Figure 5-2: Sensor Trim Screen
The Sensor Trim, Upper, Lower, Zero, and Restore buttons start automated procedures
called Methods which guide you through the sequence of steps needed to perform the
desired trim. Upper and lower trims require a pressure source. In addition, for Upper,
lower, and zero trims the you need to place manifold valves in the proper position to
perform the trim and return the manifold valves to the proper positions for normal
operation. Restore Factory Calibration doesn't require a pressure source or
manipulation of manifold valves.
To calibrate the sensor using the Sensor Trim function, perform the following procedure:
Reference Manual
Calibration overview through
Rosemount 305, 306, and 304 manifolds
Operation and maintenance
Sensor trim overview for information on the various
July 2020
for manifold operation
99