Filter
Top Products
15
Reference Manual
00809-0100-4102, Rev AA
Section 2: Configuration
May 2013
Configuration
2.5.3 Set transmitter percent of range (transfer function)
The Rosemount 2051 Wireless transmitter has two transfer functions for pressure applications:
Linear and Square Root. As shown in Figure 2-2 on page 15, activating the square root options
the transmitter analog output proportional to flow.
However, for DP Flow and DP Level applications it is recommended to use Scaled Variable. Refer
to “Diagnostics and service” on page 24 for setup instructions.
From 0 to 0.6 percent of the ranged pressure input, the slope of the curve is unity (y = x). This
allows accurate calibration near zero. Greater slopes would cause large changes in output (for
small changes at input). From 0.6 percent to 0.8 percent, curve slope equals 42 (y = 42x) to
achieve continuous transition from linear to square root at the transition point.
Setting transmitter output with a Field Communicator
Setting transmitter output with AMS Device Manager
Right click on the device and select Configure.
1. Click Manual Setup and choose output type from Transfer Function and click Send.
2. Carefully read the warning and click Yes if it is safe to apply the changes.
Figure 2-2. Square Root Output Transition Point
From the HOME screen, enter the fast key sequence
Fast Keys
2, 2, 4, 2
Sq. Root
Curve
Transition Point
Linear Section
Slope=1
Slope=42
Transition Point
Sq. Root Curve
Full Scale
Flow (%)