The purpose of this paper is to discuss: How to decrease alarms due to redundant level devices not matching especially in applications with high pressure and/or high temperature,
The importance of Gas Phase Compensation (GPC) and how it affects level readings of guided wave radar (GWR) devices,
What effect the presence of polar gas has on the accuracy of any GWR that does not have GPC when installed in applications where high temperature or pressure is present.
Diverse redundancy
Are you experiencing deviation alarms in high pressure process vessels? In many high pressure vessels, redundant level measurement technologies are employed to provide multiple level indications for safety. It is common for the instruments to have different technologies to provide what is referred to as “diverse redundancy”. A process condition that may affect one technology will likely not affect the others, ensuring that a reliable level measurement is obtained by at least one technology.
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