The LVRD500 Series, a logical extension
to the ultrasonic sensor series,
is designed for applications
requiring non-contact liquid level
measurement, in which ultrasonic
level measurement is not
The LVRD500 Series radar
technology can be adjusted for
variables such as materials to be
measured, vessel configuration,
and system interface. These
sensors are ideal when vapor,
dust, or a foaming surface prevents
LVRD500 Series radar sensors
can detect the level under a layer
of light dust or airy foam, but if the
dust particle size increases, or if
the foam or dust gets thick, they
will no longer detect the liquid level.
Instead, the level of the dust or
foam will be measured. Internal
piping, deposits on the antenna,
multiple reflections, or reflections
from the wall can interfere with
the proper operation of the
radar sensor. Other sources of
interference are rat-holing and
bridging of solids, as well as angled
process material surfaces that can
reflect the radar beam away from
The sensors use improved
microwave-pulse technology to
track any target material from the
tip of the antenna to the bottom of
the tank. Their power, pulse widths,
and sensitivity depend on the
distance of the target from the
antenna and the dielectric constant
of the reflecting material.
LVRD500 sensors feature
"echo marker" signal processing,
making them among the most
technologically advanced pulse
radar systems on the market.
This technology provides reliable,
continuous pulse shapes unaffected
by environmental factors
such as temperature, vacuums,
methane, steam, pressure, carbon
dioxide, vapors, and condensation.
The antenna comes in
polypropylene or an optional
high-resistance PTFE that can help
protect against material buildup.
Simple mounting and push-button
calibration make for easy
installation. The sensor can be
threaded directly into a 2 NPT metal
or plastic flange. The tank must
have a metal bottom to stop the
Accuracy: ±0.25% of max range (in air) Power Options: DC: 12 to 30 Vdc @ 0.07 A max, 24 Vdc R load = (Vs-6)/24 mA Output: 4 to 20 mA, 6.1 µA resolution; 750 Ω Frequency: 5.8 GHz Pressure: 75 psi maximum Loss of Echo Hold: 30 seconds, 22 mA output Transmitter Power: 50 µW average Calibration: Pushbutton or optional programmable Diagnostics (Echo Profile): Via optional programmable port Antenna: Dielectric rod Operating Temperature Range: -40 to 60°C (-40 to 140°F) Installation Category: Class II Approvals: FCC Part 15–low-power communication device Conduit Entry: ½ NPT standard Mounting: 2 NPT, or optional sanitary 2" tri-clamp Housing: Aluminum or optional 316 SS Ingress Protection: NEMA 4 (IP65) Communications Port: RS232 or RS485 Options: -HT antenna (up to 204°C or 399°F), 316 SS housing (note: -HT available on PTFE only) Dimensions: Housing: 102 Dia. x 216 mm L (4 x 8.5") Antenna: Max Dia. 38 x 259 mm L (4 x 8.5")
† All amounts shown in USD Note: Comes complete with operator’s manual. Windows software is included with "-RS232" and "-RS485" models.
High Temperature Antenna is only available with PTFE.
For 316SS add suffix "-316SS" to model number, add $555 to price.
For 2" Tri-Grip™ sanitary connection with PTFE antenna, add suffix "-S" to model number, add $505 to price (only available on LVRD501 series)