Emerson Rosemount 2051 Reference Manual page 74

Operation and Maintenance
March 2024
HART Communicator
Table 4-5: Fast keys
4–20 mA Fast Keys
1–5 Vdc Fast Keys
Calibrate the sensor with a HART
Procedure
1. Vent the transmitter and attach a HART Communicator to the measurement loop.
2. From the HOME screen, follow the fast key sequence "Zero Trim."
3. Follow the commands provided by the HART Communicator to complete the zero
AMS Device Manager
Right-click on the device. Select Calibrate and then Zero trim.
Procedure
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.
4.4.3 Sensor trim
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
Table 4-6: Fast keys
4–20 mA Fast Keys
1–5 Vdc Fast Keys
To calibrate the sensor with a HART
perform the following procedure:
Procedure
1. Assemble and power the entire calibration system including a transmitter, HART
2. From the home screen, enter the fast key sequence under "Sensor Trim."
3. Select 2: Lower sensor trim. The recommended lower sensor trim value is the
74
1, 2, 3, 3, 1
1, 2, 3, 3, 1
trim adjustment.
1, 2, 3, 3
1, 2, 3, 3
Communicator, power supply, pressure input source, and readout device.
sensor trim point that is closest to zero.
Examples:
Calibration: 0 to 100 inH
Calibration: -100 to 0 inH
Communicator using the zero trim function as follows:
®
Communicator using the sensor trim function,
®
O - lower trim = 0, upper trim = 100
2
O - lower trim = 0, upper trim = -100
2
Reference Manual
00809-0100-4101
Emerson.com/Rosemount