Step 6: Trim The Transmitter; Zero Trim - Emerson Rosemount 2051CF Series Quick Installation Manual

Quick Installation Guide
00825-0200-4101, Rev EA
June 2010
S 5
TEP CONTINUED
DP Level example
Parameters
Channel
L_Type
XD_Scale
Note: Only select the units that are supported by the device.
Out_Scale
To display pressure on the LCD meter:
Parameter
Display Parameter
Block Type #1
Block Tag
Param Index
Units Type
S 6: T
TEP RIM THE
NOTE
Transmitters are shipped fully calibrated per request or by the factory default of full scale
(span = upper range limit).

Zero Trim

A zero trim is a single-point adjustment used for compensating mounting position and line
pressure effects. When performing a zero trim, ensure that 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.
Using the host system
Perform a Zero Trim method if the host system supports methods associated with the
TRANSDUCER 1400 block. Otherwise, if the host system does not support methods see
the 2051 reference manual (document number 00809-0200-4101).
...
T
RANSMITTER
Enter Data
1
Indirect
0 - 300 inH 0 @ 68°F
2
0-25 ft.
Enter Data
1
Sensor Transducer Block
TRANSDUCER
Primary Variable
Auto
Rosemount 2051
11