Rerange - Emerson Rosemount 3051 Reference Manual

Reference Manual
00809-0100-4001, Rev JA
Field communicator
Traditional 4-20 mA Fast Keys
Traditional 1-5 Vdc Fast Keys
Device Dashboard Fast Keys
AMS device manager
Right click on the device and select Configure from the menu.
1.
2.
Figure 3-10. 4-20 mA HART square root output transition point
Note
For a flow turndown of greater than 10:1 it is not recommended to perform a square root
extraction in the transmitter. Instead, perform the square root extraction in the system.
3.9.3

Rerange

The Range Values command sets each of the lower and upper range analog values (4 and 20 mA
points and 1 and 5 Vdc points) to a pressure. The lower range point represents 0% of range and
the upper range point represents 100% of range. In practice, the transmitter range values may
be changed as often as necessary to reflect changing process requirements. For a complete
listing of Range & Sensor limits, refer to
Configuration
In the Basic Setup tab, use Xfer fnctn drop down menu to select output, click Apply.
After carefully reading the warning provided, select yes.
Full Scale
Full Scale
Flow (%)
Output
(mA dc)
Slope=1
Sq. Root Curve
Transition Point
Slope=42
"Range and sensor limits" on page
Section 3: Configuration
November 2012
1, 3, 5
1, 3, 5
2, 2, 1, 3
Sq. Root
Curve
Transition Point
Linear Section
108.
53