Emerson Rosemount 2051G, Reference Manual

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51
Reference Manual
00809-0400-4101, Rev BA
Operation and Maintenance
January 2018
Operation and Maintenance
1. Loosen the top tag of the transmitter to expose buttons.
2. Press and hold the digital zero button for at least two seconds, then release to perform a digital zero
trim.
5.5.3 Recall factory trim—sensor trim
The recall factory trim-sensor trim command allows the restoration of the as-shipped factory settings of
the sensor trim. This command can be useful for recovering from an inadvertent zero trim of an absolute
pressure unit or inaccurate pressure source.
Field Communicator
From the HOME screen, enter the Fast Key sequence and follow the steps within the Field Communicator
to complete the sensor trim.
AMS Device Manager
1. Right click on the device and, under the Method drop down menu, move cursor over Calibrate and
select Restore Factory Calibration .
2. Set the control loop to manual.
3. Select Next .
4. Select Sensor Trim under Trim to recall and click Next .
5. Follow the screen prompts to recall sensor trim.
LOI
Refer to Figure 5-4 to recall factory sensor trim.
Figure 5-4. Recall Factory Trim - Sensor Trim with LOI
5.6 Trim the analog output
The Analog Output Trim commands allow you to adjust the transmitter’s current output at the 4 and
20 mA points to match the plant standards. This trim is performed after the digital to analog conversion
so only the 4–20 mA analog signal will be affected.
Figure 5-5 graphically shows the two ways the char-
acterization curve is affected when an analog output trim is performed.
Device Dashboard Fast Keys
3, 4, 3
EXTENDED MENU
CALIBRAT CALIBRAT
DAMPING
TRANSFER FUNCT
SCALED VARIAB
ASSIGN PV
TAG
ALARM SAT VALUES
PASSWORD
SIMULATE
HART REV
BACK TO MENU
EXIT MENU
VIEW CONFIG
ZERO TRIM
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU EXTENDED MENU
EXIT MENU
CALIBRAT
ZERO TRIM
LOWER TRIM
UPPER TRIM
ANALOG TRIM
FACTORY RECALL FACTORY RECALL
BACK TO MENU
EXIT MENU
FACTORY RECALL
SENSOR RECALL SENSOR RECALL
ANALOG RECALL
BACK TO MENU
EXIT MENU