Emerson Rosemount 3051 Reference Manual page 83

Reference Manual
00809-0100-4001, Rev JA
Figure 4-1 on page 73
four major steps:
1.
2.
3.
4.
For a summary of recommended calibration procedures, refer to
Figure 4-1 on page 73
Data flows from left to right and a parameter change affects all values to the right of the
changed parameter.
Figure 4-1. Transmitter data flow with calibration options
Pressure
Source
Operation and maintenance
illustrates 3051 transmitter data flow. Data flow can be summarized in
A change in pressure is measured by a change in the sensor output (Sensor Signal).
The sensor signal is converted to a digital format that is understood by the
microprocessor (Analog-to-Digital Signal Conversion). Sensor trim functions affect this
value. Select these options to alter the digital signal on the LCD or Field Communicator.
Corrections are performed in the microprocessor to obtain a digital representation of
the process input (Digital PV).
The Digital PV is converted to an analog value (Digital-to-Analog Signal Conversion).
Rerange and Analog trim functions affect this value. Select these options to change the
range points (4-20 mA or 1-5 Vdc).
identifies the approximate transmitter location for each calibration task.
Transmitter Ranged 0 to 100 inH
A/D
SENSOR
(STEP 2)
(STEP 1)
Output: 100 in. H 0
2
Section 4: Operation and Maintenance
O
2
(0 to 0,25 bar)
D/A
MICRO
(STEP 4)
(STEP 3)
November 2012
Table 4-1 on page 4-74. Also,
Output:
20.00 mA
73