Emerson Process Management rosemount 3300 series manual Riwkhwdqn

Rosemount 3300 Series

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00809-0100-4811, Rev AA October 2002

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Figure 6-8. Upper Null Zone

If there are measurement problems in the upper part of the tank it may be

necessary to avoid measurements range in this region. Problems may occur if for example the nozzle<￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿diameter is too￿￿￿￿small or if there are disturbing objects close to the probe. By using the Upper Null Zone parameter, the measuring range in this region is reduced by avoiding measurements above a certain level.

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UPPERNULLZONE

To set the Upper Null Zone do one of the following:

1.Select the HART command [1, 4, 4, 5].

2.Enter the desired value.

or

1.Start the 5DGDU￿&RQILJXUDWLRQ￿7RRO (RCT).

2.	Click the Setup icon in the RCT workspace Project Bar.
3.	Choose the 7DQN￿&RQILJ tab in the Setup window.
4.		<￿￿￿$￿￿￿￿￿;￿￿￿￿￿H￿￿￿
	Click the Receive Page button.
5.	Type the desired value in the Upper Null Zone field.
6.	Click the Send Page button. Now the Upper Null Zone is stored in the
	transmitter memory.
Figure 6-9. Using the Waveform
Plot in RCT to set the Upper Null
Zone

WAVEFORMPLOT_UNZ

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