Emerson Rosemount 644 Reference Manual page 89

Reference Manual
00809-0200-4728
Perform a sensor trim using a Field Communicator
Procedure
1. Connect the calibration device or sensor to the transmitter. (If using an active
2. Connect the communicator to the transmitter loop.
3. From the HOME screen, enter the Fast Key sequence.
4. Select No if a sensor is connected to the transmitter
5. Select Yes if using a calibration device. By selecting Yes, the transmitter will switch
Perform a sensor trim using AMS Device Manager
Procedure
1. Right click on the device and select Overview.
2. On the main Overview tab, select the Calibrate Sensor(s) button near the bottom
3. Follow the screen prompts through the Sensor Trimming process.
Perform a sensor trim using LOI
Reference the below image for guidance on where to find Sensor Calibration in the LOI
menu.
Figure 5-2: Trimming the Sensor with the LOI
Emerson.com/Rosemount
calibrator, see Active calibrator and EMF
Device Dashboard Fast Keys
The communicator will display "Are you using an active calibrator?"
into active calibration mode (see
critical if the calibrator requires constant sensor current for calibration. If using a
calibration device that can accept pulsed current, select No.
of the window.
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU
EXIT MENU
compensation).
3, 4, 4, 1
Active calibrator and EMF
CALIBRAT
DAMPING
VARIABLE MAP
TAG
ALM SAT VALUES
PASSWORD
....
Operation and Maintenance
March 2021
compensation). This is
SENSOR 1 CALIB
SENSOR 2 CALIB*
ANALOG TRIM
FACTORY RECALL
BACK TO MENU
EXIT MENU
....
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