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98 Model 2700 Transmitter with PROFIBUS-PA
Troubleshooting
6.7.1 Damping
An incorrectly set damping value may make the transmitter’s output appear too sluggish or too jumpy.
Adjust the damping parameters in the transducer block to achieve the damping effect you want. See
Section 4.11.
Other damping problems
If the transmitter appears to be applying damping values incorrectly or the damping effects do not
appear to be changed by adjustments to the damping parameters, then the AI PV Filter Time
parameter in an AI function block may be improperly set. Inspect each AI function block, and ensure
that AI PV Filter Time is set to zero.
6.7.2 Low-flow cutoff
If the transmitter is sending an output of zero unexpectedly, then one of the low-flow cutoff
parameters may be set incorrectly. Verify that the cutoff parameters in the transducer block are set to
appropriate levels. See Section 4.13.
6.7.3 Output scale
An incorrectly configured output scale can cause the transmitter to report unexpected output levels.
Verify that the AI Out Scale values are set up correctly for each AI block. See Section 4.8.
6.7.4 Characterization
Incorrect characterization parameters can cause the transmitter to send unexpected output values.
However, you should suspect an incorrect characterization only if the transmitter and sensor have
recently been paired together for the first time. Refer to Section 3.3 for more information about
characterization.
6.7.5 Calibration
Improper calibration may cause the transmitter to send unexpected output values. However, you
should suspect an improper calibration only if the transmitter has been field-calibrated recently. Refer
to Sections 3.7 and 3.8 for more information about calibration.
Note: Micro Motion recommends using meter factors, rather than calibration, to prove the meter
against a regulatory standard or to correct measurement error. Contact Micro Motion before
calibrating your flowmeter. Refer to Section 3.5 for information about meter factors.