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Reference Manual
00809-0100-4102, Rev AA
Section 5: Operation and Maintenance
May 2013
Operation and maintenance
Note
Use a pressure input source that is at least four times more accurate than the transmitter, and
allow the input pressure to stabilize for ten seconds before entering any values.
Performing a Sensor Trim with a Field Communicator
From the Home screen, enter the fast key sequence and follow the steps within the Field
Communicator to complete the Sensor Trim.
To calibrate the transmitter using the sensor trim function:
1. Assemble and power the entire calibration system including the 2051, Field
Communicator/AMS, power supply, pressure input source, and readout device.
2. From the Home screen, select 3: Service Tools.
3. Select 5: Maintenance
4. Select 1: Pressure Calibration.
Note
Select pressure points so that lower and upper values are equal to or outside the expected
process operation range.
5. Follow the on-screen instructions to complete the adjustment of the lower value.
6. Repeat the procedure for the upper value. Select 1: Upper Sensor Trim and follow the
on-screen instructions to complete the adjustment of the upper value.
Performing a Sensor Trim with AMS Device Manager
Right click on the device and, under the Method drop down menu, move cursor over Calibrate
and, under Sensor Trim, select Lower Sensor Trim.
1. Follow the screen prompts to perform a Sensor Trim using AMS Device Manager.
2. If desired right click on the device and under the Method drop down menu, move cursor
over Calibrate and under Sensor Trim and select Upper Sensor Trim
Performing a Digital Zero Trim (option DZ)
A Digital Zero Trim (option DZ) provides the same function as a zero/lower Sensor Trim, but can
be completed in hazardous areas at any given time by simply pushing the Zero Trim button
when the transmitter is at zero pressure. If the transmitter is not close enough to zero when the
button is pushed, the command may fail due to excess correction. If ordered, a Digital Zero Trim
can be performed by utilizing configuration buttons located inside the housing of the
transmitter, see Figure 5-1 on page 65 for DZ button location.
1. Remove the electronics housing cover.
2. Press and hold the Digital zero button for at least two seconds then release to perform a
Digital Zero Trim
Fast Keys
3, 5, 1