355

Introducing Full-featured Level Transmitters with a User-friendly Price Point. ULTRASONIC 355 MODEL RADAR R82 MODEL ANOTHER INNOVATION FROM Worldwide Level and Flow Solutionssm 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 unsurpassed ease of configuration with either the menu-driven 4-pushbutton, 2-line × 16-character display, ® 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 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 transmitter configuration parameters. 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 fullyencapsulated 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. Radome 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. )))) 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 CO2 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 SPECIFICATIONS 355 PERFORMANCE Linearity ±0.4" (±10 mm) Resolution 0.1" (2.5 mm) Repeatability ±0.125" (±3 mm) Response Time