Emerson Micro Motion 5700 Configuration And Use Manual page 165

Configuration and Use Manual
MMI-20029769
Zero Time controls the amount of time the transmitter takes to determine its zero-flow reference
point. The default Zero Time is 20 seconds. For most applications, the default Zero Time is
appropriate.
3. Start the zero procedure and wait until it completes.
When the calibration is complete:
• If the zero procedure was successful, a Calibration Success message and a new zero value are
displayed.
• If the zero procedure failed, a Calibration Failed message is displayed.
Postrequisites
Restore normal flow through the sensor by opening the valves.
Need help?
If the zero fails:
• Ensure that there is no flow through the sensor, then retry.
• Remove or reduce sources of electromechanical noise, then retry.
• Set Zero Time to a lower value, then retry.
• If the zero continues to fail, contact customer service.
• If you want to restore the most recent valid value from transmitter memory:
— Using the display: Menu > Service Tools > Verification and Calibration > Meter Zero > Restore Zero >
Restore Previous Zero
Using ProLink III: Device Tools > Calibration > Smart Zero Verification and Calibration > Calibrate
—
Zero > Restore Prior Zero
• If you want to restore the factory zero:
— Using the display: Menu > Service Tools > Verification and Calibration > Meter Zero > Restore Zero >
Restore Factory Zero
Using ProLink III: Device Tools > Calibration > Smart Zero Verification and Calibration > Calibrate
—
Zero > Restore Factory Zero
Restriction
Restore the factory zero only if your meter was purchased as a unit, it was zeroed at the factory, and you are
using the original components.
Related information
Verify the zero
14.3.1 Terminology used with zero verification and zero calibration
Term
Zero
Factory Zero
Configuration and Use Manual
Definition
In general, the offset required to synchronize the left pickoff and the right pickoff under
conditions of zero flow. Unit = microseconds.
The zero value obtained at the factory, under laboratory conditions.
Measurement support
March 2019
165