Calibration Overview - Emerson Rosemount 3051 Manual

Operation and maintenance
March 2023
5.3.2 Calibrate on a bench
Procedure
1. Perform optional 4-20 mA output trim.
2. Perform a sensor trim.
5.4

Calibration overview

NOTICE
Emerson fully calibrates the Rosemount 3051 Pressure Transmitter at the factory. Emerson
provides a field calibration option to meet plant requirements or industry standards.
NOTICE
Sensor calibration allows you to adjust the pressure (digital value) reported by the
transmitter to be equal to a pressure standard. The sensor calibration can adjust the
pressure offset to correct for mounting conditions or line pressure effects. Emerson
recommends this correction. To calibrate the pressure range (pressure span or gain
correction), you need accurate pressure standards (sources) to provide full calibration.
There are two parts to complete calibration of the transmitter: sensor calibration and
analog output calibration.
Calibrate the sensor
To perform a sensor trim or a digital zero trim, see
Calibrate the 4-20 mA output
• Performing digital-to-analog trim (4-20 mA output trim)
5.4.1 Determine necessary sensor trims
With bench calibrations, you can calibrate the instrument for its desired range of
operation. Straightforward connections to a pressure source allow for a full calibration
76
a) Zero/lower trim for using line pressure effect correction.
Refer to Manifold operation
instructions.
b) Perform the optional full scale trim.
This sets the span of the device and requires accurate calibration equipment.
c) Set/check basic configuration parameters.
NOTICE
To calibrate Rosemount 3051CA and 3051TA range 0 and range 5 devices, you
need an accurate absolute pressure source.
for manifold drain/vent valve operation
Trimming the pressure
Manual
00809-0100-4007
signal.
Rosemount 3051