Pvr, Tbr, And Tmr Applications - Emerson Micro Motion 1700 Configuration And Use Manual

9.3.1

PVR, TBR, and TMR applications

PVR, TBR, and TMR are applications designed to provide more accurate process data in the
presence of multiple phases. For example, if bubbles are present in the process fluid, or the
process fluid is flashing, the volume measurements are often incorrect.
Production Volume Reconciliation (PVR)
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Transient Bubble Remediation (TBR)
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Transient Mist Remediation (TMR)
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Configuration and Use Manual
Provides oil and water volumes through density-based calculations for both line and
reference conditions
Detects bubble entrainment or flashing in the sensor, and can correct volumes
accordingly
Best for undersized three-phase separators that frequently have intermittent gas or
water contamination in the oil leg
Offers a simple, low-cost solution for net oil and net water measurement for two-
phase separators
Used with single-component liquid streams that may experience intermittent low
levels of gas entrainment, that is, gas carryunder
Enables accurate measurement of a single fluid during periods of entrained gas by
providing a substitute density value based on the immediately preceding process
density (standard configuration)
Tracks total time of aerated flow to assist in diagnosing process issues that may
cause aeration
Used with gas streams that may experience intermittent low levels of liquid
entrainment, i.e., liquid carry-over
Allows gas measurement to continue during periods of entrained liquid (mist) by
providing a substitute flow rate value based on the immediately preceding process
flow rate
Returns to reporting the measured flow rate when the mist interval is over,
increased or decreased by a maximum of 10%, until flow totals are appropriately
adjusted for the unmeasured flow
Provides an indication of the amount of time that liquid was present in the stream —
identifying process improvements to reduce gas stream contamination
Measurement support
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