Trim The Transmitter - Emerson Rosemount 2051CF Quick Start Manual

February 2019
5

Trim the transmitter

Devices are calibrated by the factory. Once installed, it is recommended to
perform a zero trim on gage and differential pressure transmitters to
eliminate error due to mounting position or static pressure effects. A zero trim
can be performed using either a Field Communicator or configuration
buttons.
For instructions using AMS Wireless Configurator, see the
Wireless Reference
Note
When performing a zero trim, ensure the equalization valve is open and all
wet legs are filled to the correct level.
CAUTION
It is not recommended to zero an absolute transmitter, Rosemount 2051CA
or 2051TA models.
5.1 Trimming with a Field Communicator
Procedure
1. Equalize or vent the transmitter and connect Field Communicator.
2. At the menu, input the HART Fast Key sequence.
3. Follow the commands to perform a zero trim.
Example
From the Home screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
For connecting with a Field Communicator, refer to
5.2 Trimming with digital zero trim button
Procedure
1. Set the transmitter pressure.
2. Remove the electronics housing cover.
3. Press and hold the Zero button for two seconds to perform a digital
zero trim.
4. Reinstall transmitter housing cover. Ensure a proper seal by installing
the electronics housing cover so the polymer contacts polymer (i.e. no
O-ring visible).
Quick Start Guide
Manual.
2, 1, 2
Quick Start Guide
Rosemount 2051
Figure 1-1.
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