Trim the Transmitter, Zero Trim, Steps | Emerson 3051SF specification

Quick Installation Guide

00825-0100-4801, Rev KB December 2010

Rosemount 3051S

STEP 6: TRIM THE TRANSMITTER

Transmitters are shipped fully calibrated per request or by the factory default of full scale (lower range value = zero, upper range value = 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.

If zero offset is less than 3% of true zero, follow the “Using the Field Communicator” instructions below to perform a zero trim. If zero offset is greater than 3% of true zero, follow the “Using the Transmitter Zero Adjustment Button” instructions below to rerange. If hardware adjustments are not available, see the 3051S Reference Manual (document number 00809-0100-4801) to perform a rerange using the Field Communicator.

Using the Field Communicator

Steps

1.Equalize or vent the transmitter and connect Field Communicator.

2.At the menu, input the Fast Key sequence (refer to Table 1 or Table 2).

3.Follow the commands to perform a zero trim.

Using the Transmitter Zero Adjustment Button

Push and hold the zero adjustment button for at least two seconds but no longer than ten seconds.

Figure 14. Transmitter Adjustment Buttons
PlantWeb	Junction Box

Zero Span

Zero

Span

3051SF, 3051S specifications

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