Zero Trim The Transmitter - Emerson 3051CF Series Quick Start Manual

Quick Start Guide
DP Level example
Parameters
Channel
L_Type
XD_Scale
Note
Select only the units that are supported by the device.
Out_Scale
2.6.6 Display pressure on the LCD display
Procedure
• 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 percent 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.
Procedure
1. To use guided setup:
2. To use manual setup:
26
a) Navigate to Configure > Guided Setup.
b) Select Zero Trim.
c) The method will execute the zero trim.
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 at 68 °F
2
0–25 ft.
Emerson.com/Rosemount
February 2019