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Refinery Application

Improve reliability and decrease alarm count

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 is critical. The presence of polar gas also can have an effect 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 be 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 being provided by at least one technology.

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Endress+Hauser Instruments International AG
Kaegenstrasse 2 4153 Reinach Switzerland
Tel.: +41 61 715 81 00
Fax: +41 61 715 25 00
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