Emerson 00809-0100-4102 manual Re-Mapping device variables

Section 2: Configuration	Reference Manual
May 2013	00809-0100-4102, Rev AA

recommended to use the low flow cutoff function in order to have a stable output and avoid problems due to process noise at a low flow or no flow condition. A low flow cutoff value that is practical for the flow element in the application should be entered. In this particular example, the low flow cutoff value is 1000 gallons of water per hour. Based on this information, the Scaled Variable configuration would be as follows:

Table 2-3. Scaled Variable Configuration for Flow Application

Scaled Variable units:	gal/h
Scaled data options:	square root
Pressure value position 2:	125 inH2O
Scaled Variable position 2:	20,000 gal/h
Low Flow Cutoff:	1000 gal/h

Note

Pressure value position 1 and Scaled Variable position 1 are always set to zero for a flow application. No configuration of these values is required.

2.6.2Re-Mapping device variables

The re-mapping function allows the transmitter primary, secondary, tertiary, and quaternary variables (PV, SV, TV, and QV) to be configured in one of two configurations. The user may select either the option of Classic Mapping or Scaled Variable Mapping, see Table 2-4for what is mapped to each variable. All variables can be remapped with a Field Communicator or AMS Device Manager.

Table 2-4. Variable Mapping

	Classic Mapping	Scaled Variable Mapping
PV	Pressure	Scaled Variable
SV	Sensor Temperature	Pressure
TV	Electronics Temperature	Sensor Temperature
QV	Supply Voltage	Supply Voltage

Note

The variable assigned to the primary variable drives the output. This value can be selected as Pressure or Scaled Variable.

Re-mapping using a Field Communicator

From the HOME screen, enter the fast key sequence

Fast Keys 2, 2, 6, 1, 1

Re-mapping using AMS Device Manager

Right click on the device and select Configure.

18 Configuration