Rosemount 4500
Reference Manual
Zero Trim
Fast Keys | 1, 2, 3, 3, 1 |
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Full Trim
Fast Keys | 1, 2, 3, 3 |
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NOTE
The transmitter must be within three percent of true zero
HART Communicator
Calibrate the sensor with a HART Communicator using the zero trim function as follows:
1.Vent the transmitter and attach a HART Communicator to the measurement loop.
2.From the HOME screen, follow the fast key sequence for “Zero Trim.”
3.Follow the commands provided by the HART Communicator to complete the zero trim adjustment.
AMS
Right click on the device and select “Calibrate,” then “Zero trim” from the menu.
1.Click Next after setting the control loop to manual.
2.Click Next to acknowledge warning.
3.Click Next after applying appropriate pressure to sensor.
4.Select Next to acknowledge the loop can be returned to automatic control.
5.Select Finish to acknowledge the method is complete.
NOTE
Use a pressure input source that is at least three times more accurate than the transmitter, and allow the input pressure to stabilize for ten seconds before entering any values.
HART Communicator
To calibrate the sensor with a HART Communicator using the full trim function, perform the following procedure:
1.Assemble and power the entire calibration system including a transmitter, HART Communicator, power supply, pressure input source, and readout device.
2.From the HOME screen, enter the fast key sequence below for “Full Trim.”
3.Select 2: Lower sensor trim
