Zero Trim; Loi; Class 2 Master; Sensor Trim - Emerson Rosemount 2051 Reference Manual

Calibration
November 2016
5.5

Zero trim

Note
The transmitter PV at zero pressure must be within 10%
order to calibrate using the zero trim function.
5.5.1

LOI

1. Enter Calibration >> Zero.
a. Verify measurement is within 10%
b. Save.
5.5.2

Class 2 Master

1. To set the Transducer Block to Out of Service, select the following:
a. From the Basic Setup >> Mode >> Transducer Block >> Target dropdown, select Out of
b. Select Transfer.
2. To calibrate the sensor, select the following in Basic Setup >> Calibration:
a. In the Lower Calibration Point field, enter 0.
b. Adjust pressure source to zero pressure.
c. Verify Pressure Trimmed Value is stable and within 10%
d. Select Transfer.
3. To set Transducer Block to Auto, select the following:
a. From the Basic Setup >> Mode >> Transducer Block >> Target dropdown, select Auto.
b. Select Transfer.
5.6

Sensor trim

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.
5.6.1 LOI
1. Enter Calibration >> Lower menu.
a. Enter trim unit and value.
b. Verify measurement is stable.
c. Save.
2. Enter Calibration >> Upper menu.
a. Enter trim unit and value.
b. Verify measurement is stable.
c. Save.
48
Service.
Reference Manual
00809-0300-4101, Rev BB
upper sensor limit (USL) of zero in
USL of zero.
LSL of zero.
Calibration