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BE 57-660 Eclipse Model 700 Guided Wave Radar Transmitter
ECHO HISTORY SETUP
– The Model 700 contains the
unique and powerful feature that allows waveforms to be
automatically captured based on Diagnostic Events, Time or
both. This menu contains those parameters that configure
that feature.
Twelve (12) waveforms can be saved directly into the trans-
mitter.
• Nine (9) Troubleshooting Curves
• One (1) Reference Curve
• Two (2) Echo Rejection Curves
TREND DATA
– A 15-minute trend of the PV can be
displayed on the LCD.
3.3.5 Troubleshooting Application Issues
There can be numerous reasons for application-related
issues. Media buildup on the probe is covered here.
Media buildup on the probe is typically not a problem in
most cases — ECLIPSE circuitry works very effectively.
Media buildup should be viewed as two types:
• Continuous Film Coating
• Bridging
Continuous Film Coating
One type of potential application problem is when the
media forms a continuous coating on the probe. Although
the ECLIPSE Model 700 will continue to measure effectively,
some small inaccuracies may occur as the signal propagation
is affected by the thickness, length, and dielectric constant
of the coating.
It is a very rare case where filming causes a noticeable per-
formance degradation.
Bridging
A more common coating problem occurs when the process
medium is viscous or solid enough to actually clog, or
bridge, between the elements. This bridging can cause a
noticeable degradation in performance. For example, high
dielectric media (e.g., water-based) can be detected as level
at the location of the bridging.
Similarly, a problem can develop if the product begins to
build up on the spacers that separate the coaxial probe ele-
ments. High dielectric media (e.g., water-based) will cause
the greatest error.
