Troubleshooting And Diagnostics - Genesis ED1 Installation And Operating Manual

Desalters are an important process element at many down-
stream and upstream operations. The primary purpose of a
desalter is to remove impurities from the oil. In upstream
applications, this can consist of chloride salts, water, and
other minerals (sediments). In downstream applications,
many of the impurities have been removed, so the focus
there is further refinement of the salt and water out of the
crude. Any salt in a hydrocarbon presents serious corrosion
and scaling concerns, which is why it must be removed. The
salt within the remnant brine of the crude oil is dissolved
with fresh water. Desalting removes both salt and residual
free water. Field desalting is necessary due to meet pipeline
specification requirements. The challenge is that interface
level must be accurate enough to control and keep free
water from contacting the desalter electrodes, which can
cause expensive damage. The goal in this application is to
keep the interface level constant to increase efficiency,
otherwise electrical field changes will disturb electrical
coalescence.
2.3

Troubleshooting and Diagnostics

The Genesis is designed and engineered for trouble-free
operation over a wide range of operating conditions. It con-
tinuously runs a series of internal self-tests and displays
helpful messages on the large graphic liquid crystal display
(LCD) when attention is required.
The combination of these internal tests and diagnostics
messages offer a valuable proactive method of troubleshoot-
ing. The device not only tells the user what wrong, but also,
and more importantly, offers suggestions on how to solve
the problem.
All of this information can be obtained directly from the
device on the LCD, or remotely by using a HART commu-
nicator or PACTw re and the Genesis DTM.
PACTware PC Program
™
The Genesis offers the ability to perform more advanced
diagnostics such as Trending and Echo Curve analysis using
a PACTw re DTM. This is a powerful troubleshooting tool
that can aid in the resolution of any diagnostic indicators
that may appear.
Refer to section 2.3.1 for additional information.
63-601 Genesis Models ED1 & ED2 Multiphase Detector 25