36
Reference Manual
00809-0100-4022, Rev GA
September 2016
Table 4-1. Recommended Calibration Tasks
4.2.1
Calibration overview
Complete calibration of the Rosemount 4600 involves the following tasks:
Configure the output parameters
Set Process Variable Units (
)
Rerange (
Set Damping (
)
Calibrate the sensor
Full Trim (
)
Zero Trim (
Calibrate the 4–20 mA output
4–20 mA Output Trim (
4–20 mA Output Trim Using Other Scale (
)
illustrates Rosemount 4600 data flow. Data flow can be summarized
in four major steps:
1.
A change in pressure is measured by a change in the sensor output (Sensor Signal).
2.
The sensor signal is converted to a digital format that is understood by the
microprocessor (Analog-to-Digital Signal Conversion).
3.
Corrections are performed in the microprocessor to obtain a digital representation
of the process input (Digital PV).
4.
The Digital PV is converted to an analog value (Digital-to-Analog Signal
Conversion).
also identifies the approximate transmitter location for each calibration task.
Data flows from left to right, and a parameter change affects all values to the right of the
changed parameter.
Transmitter
Bench calibration tasks
Field calibration tasks
Rosemount 4600G
Rosemount 4600A
1.Set output configuration parameters:
a.
Set the range points.
b.
Set the output units.
c.
Set the output type.
d.
Set the damping value.
2.
Optional
: Perform a full sensor trim if
equipment available (accurate absolute
pressure source required), otherwise perform
the low trim value section of the full sensor trim
procedure.
3.
Optional
: Perform an analog output trim
(Accurate multimeter required).
1.Reconfigure parameters if necessary.
2.Perform low trim value section of the full
sensor trim procedure to correct for
mounting position effects.
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