Introducing Full-featured Level Transmitters
with a User-friendly Price Point.
ULTRASONIC
355
MODEL
RADAR
R82
MODEL
ANOTHER INNOVATION FROM
Worldwide Level and Flow Solutions
sm
355
The Model 355
with a Lexan
®
housing and
polypropylene
transducer; and
a 355 with an
XP aluminum
housing and
a Kynar
®
transducer.
ULTRASONIC
TRANSMITTER
Housing Covers
Echotel
®
Model 355
is a two-wire,
loop-powered, non-contact ultrasonic
transmitter that performs liquid level,
volume, and open channel flow
measurement. A powerful 60 kHz
ultrasonic transducer and advanced
digital signal processing is featured
to reliably measure out to a 20 foot
(6 meter) maximum range.
TOP LEFT: Cast aluminum with
a tempered glass window for XP
approval. TOP RIGHT: Lexan
®
plastic with a transparent cover.
The Model 355 provides unsur-
passed ease of configuration with
either the menu-driven 4-pushbut-
ton, 2-line
×
16-character display,
PACTware
™
. The latter enables a
complete configuration via the local
user interface, or remotely with the
added capability of capturing echo
waveforms, and viewing trend data,
diagnostic conditions and all trans-
mitter configuration parameters.
Electronics Module
ABOVE: Module as positioned
in compartment shows LCD
and four-button keypad.
O-Ring
Aluminum Housing: Viton
®
Lexan
®
Housing: Buna-N
HART
®
digital communications, or
Housing Compartment
Shown in aluminum; available
in Lexan. Contains field wiring
compartment and electronics.
Transducer
Shown in Kynar;
available in polypropylene.
Transducer Board
Piezoelectric
Crystal Assembly
Operating Principle
Measurement is obtained by
emitting an ultrasonic pulse from
the transducer and measuring
the time required for the echo to
reflect from the liquid surface
and return to the transducer.
Smart Signal Processing
Overcomes Measurement Difficulties
355
R82
Radar Transmitter
Ultrasonic Transmitter
The intelligent electronics of the Model 355 Transmitter
analyze the ultrasonic echo profile, apply temperature
compensation, reject echoes from false targets,
and then processes the true echo from the
liquid surface. This results in an extremely
reliable measurement even when application
difficulties exist like turbulence or false
echoes generated by agitator blades, fill
pipes or other internal tank fittings.
The 60 kHz ultrasonic transducer is offered in
polypropylene or Kynar for superior performance
in harsh environments. These powerful transducers
feature a 10° conical beam and 10" (255 mm) blocking
distance to maximize measurement capabilities in a
wide variety of applications.
•
•
•
•
•
•
Chemical storage tanks
Vessels with highly viscous media
Paint, ink and solvent tanks
Food and beverage vessels
Batch and day tanks
Open channel flow weirs and flumes
The sophisticated circuitry of the R82 transmits, receives
and processes 1.8 million pulses per second to
ensure reliable measurement. The R82 measures
effectively even when atmospheres above the
liquid are saturated with vapor. Pulse Burst
technology and advanced signal processing
manage common disturbances such as false
echoes caused by obstructions, multi-path
reflections from tank sidewalls or turbulence
caused by agitators, aggressive chemicals,
or aerators.
The R82 launcher orientation and echo-rejection
profiling are simplified for easy use. The microwave
beam is rotatable for optimized operation. The fully-
encapsulated horn antenna offers high performance
and is chemically resistant to nearly all standard
process media. Applications include:
•
•
•
•
•
Liquids, slurries and viscous media
General chemical storage
Day, batch and feed tanks
Food and beverage vessels
Water/Wastewater tanks and sumps
Fill pipe
Ladder and fill
pipe obstacles
Agitator blade shaft
Visible vapors
Turbulent process
Aerated process;
in-tank air movement
R82
Model R82 with
a thermoplastic
housing and a
polypropylene
antenna; and a
Model R82 with a
cast aluminum
housing and a
Tefzel
®
antenna
RADAR
TRANSMITTER
Housing Covers
TOP LEFT: Cast aluminum with
a tempered glass window.
TOP RIGHT: Lexan plastic with a
transparent cover.
Model R82
is a loop-powered,
26 GHz, non-contact radar transmitter
that performs liquid level and volume
measurements in enclosed vessels.
The R82 offers high-performance at
an economical price point to reliably
measure out to a 40 foot (12 meter)
maximum range.
The Model R82 provides unsurpassed
ease of configuration with either the
menu-driven 4-pushbutton, 2-line
×
16-character display, HART digital
communications, or PACTware. This
allows complete configuration via the
local user interface, or remotely with
the added capability of capturing
echo waveforms, and viewing trend
data, diagnostic conditions and all
transmitter configuration parameters.
Electronics Module
ABOVE: Module as positioned in
compartment shows LCD
and four-button keypad.
O-Ring
Aluminum Housing: Viton
®
Lexan
®
Housing: Buna-N
Housing Compartment
Shown in aluminum; available in
Lexan. Contains field wiring
compartment and electronics.
Radar Antenna
Shown in Tefzel;
available in
polypropylene.
Available in
two lengths.
Antenna
horn is
encapsulated within
polypropylene or Tefzel.
Operating Principle
The R82
is based on pulse burst radar
technology together with
equivalent time sampling
circuitry. Short bursts of
26 GHz microwave energy
are emitted and subsequently
reflected from the liquid
level surface.
Radome
))))
Sheds
condensation
APPLICATION SUITABILITY
Ultrasonic Transmitter
MEASUREMENT CAPABILITY
VESSEL TYPES
VOLUME
RANGE
13" to 20 feet (0.3 to 6 meters)
20 to 40 feet (6 to 12 meters)
NARROW SHOT w/ OBSTRUCTIONS
PLASTIC STILLWELL
STEEL STILLWELL
TEMPERATURE GRADIENTS
PRESSURE
Vacuum
Atmospheric
to 43.5 psig (3 bar)
43.5 psig (3 bar)
to 200 psig (13.8 bar)
VAPORS
AGGRESSIVE MEDIA
CO
2
GAS
HYGIENIC, CIP/SIP APPLICATIONS
Level, Volume, or Open Channel Flow
Open or Closed
Selectable from stored tank shapes
Recommended
Not Recommended
Recommended
Recommended
Recommended
Not Recommended
Not Recommended
355
Radar Transmitter
Level or Volume
Closed only
Utilizes 20-point table
Recommended
Recommended
Not Recommended
Not Recommended
Recommended
Recommended
Recommended
R82
Recommended
Recommended
Not Recommended
Recommended
Not Recommended
Recommended with Kynar
®
transducer
Recommended
Recommended with Tefzel
®
antenna
Not Recommended
Not Recommended
Recommended
Recommended
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