Trim The Transmitter - Emerson Rosemount 3051SF Series Quick Start Manual

Quick Start Guide
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).
6.1 Zero trim
Prerequisites
Choose your trim procedure
1. Analog zero trim - sets the analog output to 4 mA.
2. Digital zero trim - recalibrates the sensor zero.
6.1.1 Use the Field Communicator
Procedure
1. Equalize or vent the transmitter and connect Field Communicator.
2. At the menu, input the Fast Key sequence (refer to
Communicator user
3. Follow the commands to perform a zero trim.
6.1.2 Use the transmitter zero adjustment button
Procedure
To perform an analog zero trim using the tansmitter buttons push and hold
the zero adjustment button for at least two seconds but no longer than 10
seconds.
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a. Also referred to as a "rerange", it sets the lower value range
(LRV) equal to the measured pressure.
b. The display and digital HART output remains unchanged.
a. The LRV is unaffected. The pressure value will be zero (on
display and HART output). 4 mA point may not be at zero.
b. The transmitter must be within 3 percent of URL from factory
calibrated zero pressure in order to calibrate the zero function.
interface).
December 2018
Field
Rosemount 3051S