Zero Trim The Transmitter - Emerson Rosemount 3051 Quick Start Manual

August 2016
DP Level example
Parameters
Channel
L_Type
XD_Scale
Note
Select only the units that are supported by the device.
Out_Scale
Display pressure on the LCD display
Select the Pressure check box on the Display Configuration screen.

2.7 Zero trim the transmitter

Note
Transmitters are shipped fully calibrated per request or by the factory default of full scale
(span = upper range limit).
A zero trim is a single-point adjustment used for compensating mounting
position and line pressure effects. When performing a zero trim, ensure the
equalizing valve is open and all wet legs are filled to the correct level.
The transmitter will only allow 3–5% URL zero error to be trimmed. For greater
zero errors, compensate for the offset by using the XD_Scaling, Out_Scaling and
Indirect L_Type which are part of the AI block.
1. To use guided setup:
a. Navigate to Configure>Guided Setup.
b. Select Zero Trim.
c. The method will execute the zero trim.
2. To use manual setup:
a. Navigate to Overview>Calibration>Sensor Trim.
b. Select Zero Trim.
c. The method will execute the zero trim.
Enter data
1
Indirect
0–300 inH O @ 68 °F
2
0–25 ft
Quick Start Guide
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