Trimming The Transmitter - Emerson Rosemount 3051 Operating Instructions Manual

December 2023
7

Trimming the transmitter

Note
Emerson ships transmitters fully calibrated per request or by the
factory default of full scale (span = upper range limit).
7.1 Zero trim
A zero trim is a single-point adjustment used for compensating
mounting position effects.
When performing a zero trim, ensure the equalizing valve is open
and all wet legs are filled to the correct level.
There are two methods to compensate for mounting effects:
• Zero trim
• Using the transmitter zero adjustment buttons
The zero trim will affect the 4–20 mA value, the HART
variable (PV), and the display value.
7.1.1 Zero trim using communication device
Procedure
1. Equalize or vent the transmitter and connect communication
device.
2. Navigate to Maintenance → Calibration → Pressure →
Calibration → Zero Sensor Trim.
3. Follow the commands to perform a zero trim.
7.1.2 Zero trim using Quick Service buttons
Procedure
1. Locate the external buttons under the top nameplate as
shown in
2. Press either button to wake the menu.
3. Follow the on screen prompt by pressing the other button.
4. Once on the Quick Service Button main menu, use the Scroll
and Enter buttons to navigate to the Zero menu.
Quick Start Guide
Figure 7-1.
Quick Start Guide
primary
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