Digital-To-Analog Trim Using Other Scale; Recall Factory Trim-Analog Output - Emerson Rosemount 3051S Series Reference Manual

Operation and Maintenance
October 2018
AMS Device Manager
1. Right click on the device and select Methods, then Calibrate, then D/A Trim from the menu
2. Follow the on-screen prompts.
3. Select Finish to acknowledge the method is complete.
4.2.10

Digital-to-Analog trim using other scale

Device Dashboard Fast Keys
HART 5 with Diagnostics Fast Keys
HART 7 Fast Keys
The scaled D/A trim command matches the 4 and 20 mA points to a user selectable reference scale other
than 4 and 20 mA (i.e., 1–5 volts if measuring across a 250 ohm load, or 0–100 percent if measuring
from a Distributed Control System [DCS]). To perform a scaled D/A trim, connect an accurate reference
meter to the transmitter and trim the output signal to scale, as outlined in the output trim procedure.
Note
Use a precision resistor for optimum accuracy. If you add a resistor to the loop, ensure that the power
supply is sufficient to power the transmitter to a 23 mA output (maximum alarm value) with additional
loop resistance.
Field Communicator
Enter the Fast Key sequence "Digital-to-Analog Trim Using Other Scale".
AMS Device Manager
1. Right click on the device and select Methods, then Calibrate, then Scaled D/A trim from the menu
2. Set the control loop to manual, select Next.
3. Select Change to change scale and select Next.
4. Follow the on-screen prompts.
5. Select Finish to acknowledge the method is complete.
4.2.11 Recall factory trim–analog output
Device Dashboard Fast Keys
HART 5 with Diagnostics Fast Keys
HART 7 Fast Keys
The recall factory trim–analog output command allows the restoration of the as-shipped factory
settings of the analog output trim. This command can be useful for recovering from an inadvertent trim,
incorrect Plant Standard or faulty meter.
Field Communicator
Enter the Fast Key sequence "Recall Factory Trim—Analog Output".
80
3, 4, 2, 2
N/A
3, 4, 1, 2, 3, 2
3, 4, 3
3, 4, 1, 3, 2
3, 4, 1, 3, 2
Reference Manual
00809-0100-4801, Rev HA
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Operation and Maintenance
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