Phillips 66 Optimizes Tray Level Measurement in Depropanizer Tower with Guided Wave Radar APPLICATION Level measurement for depropanizer tower recycle isobutane draw tray. CUSTOMER Phillips 66, U.S.A CHALLENGE Phillips 66 required a redundant level measurement in addition to their existing nuclear level device for their depropanizer tower tray measurement. This was required because they wanted a second level measurement for reference. The depropanizer tower is regularly inspected with X-rays, which interferes with the nuclear level measurements used to control the tower tray level. For this reason, a device unaffected by X-rays was needed. The current level device is mounted on a chamber manufactured from alloy due to the corrosive nature of the media. The nickel alloy chamber p

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