As with other technologies that contact the process, the probes are a critical element to maximizing the performance of Genesis. Probes will range from a large diameter coaxial to a completely new Pentarod design. The Pentarod is a five- conductor probe with four reference rods surrounding a PFA coated active center rod.
The concentrated signal yields coaxial-like performance; yet it has an “open” design that is less susceptible to measurement errors due to media buildup or bridging. The PFA coated center rods, aside from improved resistance to heavy coating, allow the pulse to travel in water with less absorption.
Genesis builds upon the proactive diagnostics found in GWR today in order to actively monitor buildup on the probe; enabling operators to streamline maintenance and reduce downtime. These buildup diagnostics capabilities include:
Genesis Pentarod probe design
Location on the probe where buildup has occurred
Relative measure of buildup on the probe; indicating that buildup could potentially interfere with the actual level measurement
! Rate of buildup as a percent per time period
A diagnostic warning when buildup may affect the level measurement
Furthering on these capabilities and of particular importance in upstream separators, an alarm can be configured when sand/sediment reaches an identified level on the probe to proactively eliminate unplanned shutdowns.
Due to the growing number of interface level transmitters and significance of this measurement, a technology breakdown is provided in Table 1 highlighting strengths, weaknesses and recommended uses in applications with thick/dynamic emulsion layers where a profile of the total level, top of emulsion, bottom of emulsion and sand/sediment is desirable.
5 / EMULSION IN THE FIELD: The Genesis of TDR Multiphase Level Measurement
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