Emerson Process Management 5300 Record Tank Spectra, Viewing the Echo Curve, Threshold Settings

Reference Manual

00809-0100-4530, Rev BA July 2009

Rosemount 5300 Series

Record Tank Spectra

The File ModeTab

Using the Echo Curve Analyzer with a 375 Field Communicator

This function allows you to record tank spectra over time. This can be a useful function if, for example, you want to study the tank signal when filling or emptying the tank.

The File Mode tab lets you open files with saved snapshots/movies to be presented in the spectrum plot. A movie file can be played to view the amplitude plot at the desired update rate.

The 375 Field Communicator supports the Electronic Device Description Language (EDDL) with enhancements that allows you to view the Echo Curve, create an Amplitude Threshold Curve (ATC) and specify amplitude thresholds such as the Surface Threshold, Interface Threshold, and Reference Threshold.

Viewing the Echo Curve

To view the Echo Curve:

1.Select HART command [2, 6, 1]. FOUNDATION Fieldbus parameter:

TRANSDUCER 1300>AMPLITUDE_THRESHOLD_CURVE The Echo Curve appears on the display:

2.Use the Hand and Zoom tools to view specific parts of the Echo Curve. The drop down list allows you choose items, such as the different amplitude thresholds, to be displayed in the plot.

The Echo Curve plot also shows an ATC if available. See “Threshold Settings” on page 7-13for information on how to create an ATC with the Measure and Learn function.

Threshold Settings

To adjust the amplitude thresholds:

7-13