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E C H O T E L ® N O N - C O N TA C T U LT R A S O U N D

N on-contactultrasonicleveltechnology isa proven method foraccurateliquidlevelmeas - uremen t.Processcontrolinstrumen tsutilizing this technology senseand mea sureliquid level,volume, or open channel flow withoutmak ing physicalcontact w iththe liquiditself.Thisoffersdistinctadvantages over m any contacttechnologiesin applications w here corrosivemedia,suspended solids,changingmed ia characteristics,or coatingmed iaarepresent. MM eeaassuurriinngg ww iitthh UU llttrraassoouunndd Two component s make up a typical non-contact ultrasonic measurement device: the transmitter, or electronics; and the trans - ducer, or sensor. A piezo - electric crystal within the transducer converts electrical signals generated by the transm itter into a series of ultrasonic pulses. Under ideal conditions, these pulses are transmitted through free air at the speed of sound until they come into contact w ith the liquid surface w here they are reflected back to the transducer. The transm itter’s electronics then mea sures the pulse’s round- trip time and digitally processes the information to indicate liquid level. A trans - mitter programmed with a vessel’s geometry can calcu - late the liquid volume of a vessel. A transmitter pro - gramm ed to convert the level reading into units of volume per time can meas - ure the liquid flow rate in an open channel. AA ssssuurriinngg SSiiggnnaall IInntteeggrriittyy In the real world of process man agemen t, an ultra - sonic signal launched into free air is vulnerable to distortion from many sources. Unless safeguards are taken by mechanical m eans or advanced signal processing, non-contact measurement can be greatly com promised. The m ost obvious form of inter- ference are the physical structures inside of a vessel—pipes, ladders, struts, agitator blades, or irregular tank geometry. All of these can fall within the path of the ultrasonic beam to com - prom ise the signal. The greater the distance from the transducer, the wider the beam spreads, thereby increasing the like - lihood that a “false target” will enter the beam ’s path. A t 2 feet from the trans - ducer, a typical ultrasonic beam m ay be less than 6 inches in diameter; but at 35 feet from the transducer the conical shaped beam will expand to a diameter of 7 feet. Mag netrol’s 335, 355, 344 and 345 transm itters have a False Target Rejection feature which filters out obstructions that m ay lie within the path of the beam . By entering the locations of the obstruc - tions into the transm itter’s false target m emo ry, the user can program out the erroneous targets. As an additional m easure to assure instru - m ent integrity, Magnetrol transm itters feature a self- diagnostics capability which continuously checks all relays, outputs and the overall function of the trans - ducer and electronics. A mb ient temp erature can also have a significant effect on the accuracy of a non-contact ultrasonic transm itter. As tem perature decreases, air becomes No n-Contact Ultrasonic Level Measurement The Transmitter houses the electronics for signal processing and control outputs. Depending on the mod el, transm itters can be mounted either integrally or remotely. The Transducer is located inside the vessel. It transmits and receives the ultrasonic signals. Ultrasound 101: The Bas ics

m ore dense, resulting in slow er sound velocity. Since m easurement is directly dependent on sound speed, it is necessary to compensate for temper ature changes. All M agnetrol’s transducers include a temperature compensa - tion circuit which continuously monitors the temperature at the sensor and compensates for variations over the full temperature range of the transducer. Ultrasonic non-contact devices are typically rated for a maximum range in ideal conditions. Bu t process condi - tions can impact the maximum range of measurement. These conditions include surface agitation, vapors and steam, foam and air movem ent. A derating multiplier can be computed to yield a new maximum range for optimum performance. A lower frequency transducer, such as the 38 kHz model, provides increased pow er with a longer wa velength to increase measuremen t range and improve performance where steam, vapors or turbulence may be present. TTeecchhnnoollooggyy AA ddvvaannttaaggeess aanndd LLiimm iittaattiioonnss The advantages of non-contact sensing are:

  • No contact w ith corrosive, contaminating liquids.
  • A ccurate to within 0.25% of measured span.
  • Continuous and multiple-point sensing available.
  • No moving parts for reduced maintenance.
  • No t affected by changes in liquid properties such as specific gravity, dielectric shifts, pH, etc.
  • Intrinsically safe, non-incendive and explosion proof instrum ents are available. Conditions limiting ultrasound’s effectiveness include:
  • Surface foam that absorbs the ultrasonic signal.
  • Vapors that significantly alter the speed of sound.
  • O perating pressures exceeding 50 psig (3.45 bar).
  • Tem peratures exceeding +200° F (+93° C). I Echotel non-contact ultrasonic transmitters have been engineered to meet the process requirements of major industries including: Oil & Gas, Chemicals, Food & B everage, Pow er Generation, Pulp and Paper, Water & Wastewater, Pharmaceutical, and Petrochemical. Real World Applications CC hheemm iiccaall FFeeeedd TTaannkkss IInnfflluueenntt//EEfffflluueenntt FFlloowwCC llaarriiffiieerr LLeevveell CC oonnddeennssaattee SSttoorraaggee OO ppeenn AA ttmm oosspphheerree SSuumm ppssFFuueell OO iill SSttoorraaggee

Fo r Liquid Level, Volume or Open Channel F low Available as an integral or remote mounted unit, this versatile and powerful ultrasonic transmitter is easy to install and quick to calibrate. Advanced Electronics Isolated 4–20 mA output with an active/passive mode for loop powe r or device powe r. RS-48 5 with Modbus protocol allow s bi-directional com m unication with DCS or PLC. Two or four 10 am p SPDT gold flash relays for a wide variety of alarm and control schem es. Explosion-Proof Transmitter and Transducer The Model 300/301 has Explosion-Proof FM and CSA agency approvals for both the transducer and the trans - m itter: Class I, Division 1, Groups B, C, and D. Fast, Password-Protected Calibration U nique QuickCal ™ calibration feature allow s comp lete system calibration in 90 seconds. A password protection feature also prevents unwan ted tam pering with the configuration data. M odel 300/301 Transm itter Specifications Powe r Supply 120 VAC ±10%, 50-60 Hz

240 VAC ±10%, 50-60 Hz

24 VD C ±20%

Powe r Consump tion 12 watts maximum Analog Output Signal Active Mode 4–20 mA (isolated); maximum of 1,000 Ω loop resistance Passive Mode 4–20 mA (isolated); loop resis t- ance dependent on power supply (32 volt ma x) 1,000 Ω @ 24 volts Digital Output RS-485 with Modbus Relays 10 am p SPDT resistive (0, 2 or 4) F ail-safe User selectable for analog and relay outputs Am bient Temperature Electronics -40° to +160° F (-40° to +71° C) Display Two-line, 32 character LCD Keypad 16-button (inside housing) Response Time 2 seconds, typical Accuracy ±0.25% of calibrated span

  • Viscous Fluids
  • Acids, Caustics
  • W ater & W astew ater
  • Chem icals
  • Pulp & Paper
  • Pow er Ge neration

Applications

two -line, 16-character LCD display is inside the explosion-proof housing Transducer Specifications Frequency 38 kHz Beam Angle Conical 12° M ax Range/Span 30 feet (9.1 m) / 28.5 feet (8.7 m) D ead Zone 18 inches (460 mm) minimum Process Temp -40° to +163° F (-40° to +73° C) Process Pressure Atmospheric to 50 psig (3.45 bar) Cable Length 500 feet maximum L L L

F or Liquid Level, Volum e or Open Channel Flow Echotel 335 Transmitter Specifications Powe r Supply 8 5 to 255 VAC Output Signal 4–20 m A (isolated); 600 Ω load F ault Detection Co nfigurable 3 amp SPDT relay, LED , and 3.6 or 22 m A Relay One, 3-amp S PDT F ail-safe S oftware selectable Amb ient Temperature -22° to +140° F (-30° to +60° C) D isplay Removable six-digit LCD module with dual function bar graph Ke ypad 4-button menu-driven data entry LED Status Indication Echo strength, powe r, relay LED’s Compen sation Auto temp erature comp ensation over transducer operating range Accuracy ±0.2% of measured distance, plus 0.05% of the range Enclosure Du al compartment cast aluminum Protection NE MA 6 (IP 67)

  • Sum p, W ell, & Tank Level
  • Open Channel Flow
  • W ater & Wa stewater Treatment
  • Chemical Storage Tanks
  • Food & Beverage Con tainers
  • Pulp & Paper Vessels

With flexible software, advanced signal processing and a powe rful transducer, the Model 335 offers outstanding measurement performanc e and value. Hinged, Dual Com partme nts The LC D m odule com partment houses the user interface and the low er com partment houses the w iring terminals. A screw release allow s the LCD com partment to swing com pletely clear of the wiring m odule. Plug-In Display Module The module offers easy set-up and config - uration of all process param eters via four push buttons. The custom graphics LCD displays six-characters and a bar graph of signal strength or tank level. The module can be removed to configure other 335 units.

335 Electronics

Advanced digital signal processing provides optimum perform ance in a variety of process conditions. L L L L L L Transducer Specifications Frequency 50 kHz Beam Angle Conical 7° M ax Range 26 feet (8 m) D ead Zone 14 inches (350 m m) Process Temp -22° to +195° F (-30° to +90° C) Process Pressure Atmospheric to 44 psig (3 bar) M aterial Polypropylene Protection NEM A 6P (IP68)

For Liquid Level, Volume or Open Channel Flow A remo te mount ed, full-featured ultrasonic transmitter with extensive agency approvals. Many transducer configurations and transmitter options are available for greater versatility. Conv enient Front Panel Interface Front panel keypad makes programmi ng convenient; once wired, there’s no need to open the enclosure. A large, 16-character alphanum eric display shows all param eters and a password code prevents unautho - rized tampering with configuration data. Cho ice of Transducers The Mod el 344 em ploys the pow erful 38 kHz Kynar transducer used prim arily for level and volum e applications. The Model 345 uses the 50 kHz transducer, available either in Kynar or 316 stainless steel. Transducers feature temp erature comp ensation. Full-Featured Electronics Automatic, continuous self-test checks transducer signal, temp erature sensor, all outputs and system functionality for proper operation. False target buffering feature elim inates signal interference for up to nine fixed tank obstructions. Mod el 344/345 Transmitter Specifications Pow er Supply 120 VAC ±10%, 50-60 Hz

24 VDC ±20%

Pow er Consump tion 12 watts (without heater) Output Signal 4–20 mA isolated (1,000 Ω load), RS -232 (data logger downloading) Relays Fo ur, 10-amp resistive, SPDT F ail-safe User selectable for analog and relay outputs Display 16-character alphanumeric Keypad 16-button integral to front panel Response Time 2 seconds, typical Accuracy ±0.25% of configured span Am bient Temperature with Heater & Thermostat -40° to +160° F (-40° to +70° C) w/o He ater & Thermostat -4° to +160° F (-20° to +70° C) Agency Approvals Class I, Division 2, Non-incendive and NEMA 4X from FM and CSA

  • Sum p & W astewa ter
  • Slurries, Viscous Fluids
  • Pulp & Paper
  • Powe r Generation
  • Petrochem App lications Transducer Specifications Frequency 38 kHz 50 kHz M ax Range 35 feet (10.7 m) 25 feet (7.6 m) M ax Sp an 33.5 feet (10.2 m) 24 feet (7.3 m) Process Temp -40° to +163° F -40° to +200° F Process Pressure Atmospheric to 50 psig (3.45 bar) Beam Angle Conical 12° Cable Length 500 feet maximum Transducer Tem perature Outputs System L L L

Fo r Liquid Level, Volume or Open Channel Flow M odel 355 Transmitter Specifications Powe r Supply 16 to 36 VD C Powe r Consum ption Less than 1 Watt Output Signal 4–20 m A with optional HART ® F ault Detection S electable from 3.6, 22 mA, or hold D am ping Adjustable from 1 –60 Amb ient Temperature -40° to +175° F (-40° to 80° C) D isplay 2-line × 16-character LCD Ke ypad 4-push-button menu-driven Compen sation Auto temp erature comp ensation over transducer operating range Accuracy Greater of ±0.2% of range or 0.24 inch (6 mm ) Repeatability ±0.125 inch (3 mm) Resolution 0.1 inch (2.5 mm) Linearity ±0.4 inch (10 mm ) Response Time Less than 1 second (typical) W arm -up Time 30 seconds Enclosure Cast aluminum or Lexan ® Protection NE MA 6 (IP 67) Transducer Specifications Frequency 60 kHz Beam Angle Conical 10° M ax Range 20 feet (6 meters) Blocking Distance 10 inches (250 m m) Process Temp -40° to +175° F (-40° to +80° C) Process Pressure 0 to 43.5 psig (0 to 3 bar) M aterial Kynar ® Flex (PVD F) or polypropylene Protection NEM A 6P (IP 68)

  • Sump, W ell, Tank Level
  • Highly Viscous M edia
  • Paint, Ink & Solvents
  • Food & Beverage Vessels
  • Batch & Day Tanks

Outstanding me asurement performance and value in a two- wire, integral transmitter featuring flexible software and advanced signal processing. Temp erature Com pensated Echo Rejection The Model 355 has a patent-pending echo rejection technique that constantly adjusts the rejected echo profile based on the current sound propagation velocity. This technique keeps the transm itter track - ing the actual liquid level as opposed to false targets even when tem - perature changes alter the shape of the echo rejection profile. Dual Flow Totalizers Two 7-digit flow totalizers are provided for recording flow. One totalizer is resettable and the other is non-resettable. Several multipliers are selectable to allow for proper scaling. Totalizer tim e is also recorded to show how long each totalizer has been recording flow. Stored Tank Shapes for Volume Volume configuration with the 355 is as easy as selecting the tank shape and inputting 1 –3 dime nsions. While a 20-point custom table is also available, selecting the actual tank shape provides for a fast and accurate configuration for a variety of commo n tank shapes. L L L

5300 Belmo nt Road • Dow ners Grove, Illinois 60515-4499 USA

Phone: 630-969-4000 • Fa x: 630-969-9489 ww w.m agnetrol.com • info@ m agnetrol.com EU ROPEAN HEADQUARTERS H eikensstraat 6 • 9240 Zele, Belgium Phone: 052 45.11.11 • Fax: 052 45.09.93 BRAZIL: Av. Dr. Mauro Lindemberg Monteiro • 185-Jd. Santa Fé, Osasco • São Paulo CEP 06278-010 CANADA: 145 Jardin Drive, Units 1 & 2 • Concord, Ontario L4K 1X7 CHINA: Plant 6, No. 191, Huajin Road • Minhang District • Shanghai 201109 DEUTSCHLAND: Alte Ziegelei 2–4 • D-51491 Overath DUBAI: DAFZA Office 5AE 722, P .O. Box 293671 • Dubai, United Arab Emirates INDIA: C-20 Community Centre • Janakpuri, New Delhi 110 058 ITALIA: Via Arese, 12 • 20159 Milano SINGAPORE: 33 Ubi Avenue 3 • #05-10 Vertex • Singapore 408868 UNITED KINGDOM: Regent Business Centre • Jubilee Road • Burgess Hill, West Sussex RH15 9TL Co pyright © 2010 Mag netrol International. All rights reserved. Printed in the USA . Echotel ® Ma gnetrol ® and the Magnetrol logotype are tradema rks of Magnetrol International. K ynar ® is a trademark of The Pennw alt Co rporation. Bulletin: 51-180.3 • Effective: July 2009