Accuracy enhancement
To enhance accuracy further, TankRadar Rex has
some built-in unique features:
Temperature control
TankRadar Rex gauges are designed to operate in
all climates. The gauge is continuously controlling
the temperature of the electronics and keeps it
constant. This is one of the reasons for the 65 years
of mean time between failure (MTBF) for the gauge.
Digital reference
A radar gauge needs an internal reference to make
the radar sweep absolutely linear. Each deviation
from the linearity produces a corresponding
inaccuracy. To achieve highest precision, TankRadar
Rex uses a digital crystal oscillator. This gives the
most stable reference that is available with today’s
technology.
Drip-off means no condensation
If the antenna has an inclined polished PTFEsurface
where the microwaves are emitted, it will be
less susceptible to condensed water or product. The
drops of condensation will not coat the active part of
the antenna. In this way the radar signal will be less
weakened resulting in higher accuracy and better
reliability.
Measurement close to tank wall
A standard manway (or flange) is normally 0.3-1 m
(1-3 feet) from the tank wall. Both the RTG 3920
Horn Antenna Gauge and the RTG 3930 Parabolic
Antenna Gauge are specially designed to be
mounted close to the wall.
The RTG 3920 Horn Antenna Gauge radar signal
is polarized so that the direct reflection from the
liquid surface is the only detectable reflection. Any
wall disturbance will be blanked out. The RTG 3930
Parabolic Antenna has a narrow radar beam due
to the large 20-inch antenna diameter resulting in a
small and uncritical wall echo.