Micro Motion RFT9709 Manual de instrucciones Pagina 173

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Using ProLink
®
Software with Micro Motion
®
Transmitters
159
Test Menu
continued
Test point diagnostics for Version 3 RFT9739
Applications Menu Help Menu
Configure Menu:
Meter Factors
Calibrate Menu Test Menu
Figure 15-3. Test points dialog box
Test point values
To use the displayed tube frequency, pickoff and drive gain voltages in
Section 7.3
.
When the sensor is disconnected from an RFT9739, the following values
go to zero:
•Drive gain
Left and right pickoff signals
•Live zero
Live zero
Live zero flow enables the user to read the mass flow rate when it drops
below the cutoff that is set for mass flow. (To set a mass flow cutoff, see
Section 9.5
, page 102.)
The live zero flow value is for diagnostic purposes only. If the mass flow
rate drops below the flow cutoff, internal totalizers will stop counting,
whether or not the user is reading live zero flow.
When flow through the sensor is completely stopped, live zero flow can
be used for calculating the zero stability portion of the flow measurement
error.
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