March 2018
12
Quick Start Guide
6.0 Trim the transmitter
Note
Transmitters are shipped fully calibrated per request or by the factory default of full
scale (span = upper range limit).
6.1 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 the
equalizing valve is open and all wet legs are filled to the correct level.
The transmitter will only allow three to five 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.
Using the host system
Perform a zero trim method if the host system supports methods associated
with the Transducer 1100 block. Otherwise, if the host system does not
support methods, see Rosemount 3051S FOUNDATION Fieldbus Reference
Manual.
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