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1 TechnicalInformationTI 190F/00/enApplicationsProsonic FMU ultrasonictransmitters are for use with theProsonic FDU family of transmitter determines levels insilos and tanks and calculates thevolume of solids and liquids the appropriate certified sensor,measurements can be made inexplosion hazardous areas, zone 1 or incombustible used for applications in fresh andwaste-water, prosonic measures flow rates in flumes and weirs water levelsand can control screen cleaning and BenefitsA customised instrument programme forthe specific of transmitters For the field or control room Single or two-channel versions withthree or five relays, also with optionaltotaliser With optional serial interface forremote configuration (INTENSOR orHART protocol) With RS-485 interfaceIntelligent commissioning, ultrasonicmeasurement par excellence Instrument parameters arranged in asimple matrix Various linearisation functions,totalisers, and all common Q/h curveson call Quick commissioning and stablemeasurement thanks to signal patternrecognition by fuzzy logic and theapplication parameterUltrasonic Measurementprosonic FMU and flow measurement with ultrasonicsSimple to start up, easy to use, flexibleField mounted ultrasonic transmittersThe prosonic ultrasonictransmitter in the IP 66protective housingHauser+EndressThe Power of Know HowMeasuring SystemMeasuring SystemThe measuring system consists of theProsonic transmitter with a Prosonicsensor chosen according to theapplication at hand.

2 The two-channelversion is for differential measurementor for controlling two measuring certified sensor ensures that themeasuring system can be used inexplosion hazardous areas. Other unitscan be connected to the Prosonictransmitter for special applications: separate temperature sensor, ifthe ultrasonic sensor is heated separate external limit prosonic transmitter can beintegrated into automation systemsusing the RS-485 interface (see ).Transmitters and ApplicationsProsonic FMU 860for continuous leveland volumetric measurement of liquidsand solids in tanks and FMU 861for flow ratemeasurement in flumes and FMU 862two-channel versionfor: measurement of flow rate or level onchannel 1 and level measurement onlyon channel 2 or differential or average measurement (On request: FMU 862 D version fordistance measurement between twosensors).

3 prosonic FMU 860 Water level measurement , forcontrolling water inflow and outflow, orfor pump control in up to 5 stages. Also: alternating pump control, adjustable switch FMU 861 Flow rate measurement in flumes orweirs to determine water level withmillimeter linearisation curves of all commonstandard flumes and weirs are presetand can be called up as required. Forthe version with IP 66 housing, theamount flowing through is summatedand displayed by the totaliser. Also: low flow cut-off, separate display of floodwater onexternal counters, sample control using a quantity or FMU 862 The two-channel unit is used fordifferential level measurement , forcontrolling the screen cleaning processas a function of clogging. Also: superimposed interval timer, trend indication, back water water in weirs is detected,signalled and the flowrate 860 LLevelLevel measurement forpump controlEXFDUFMU 86112 3 4 56 QFlowEx Zone 1 Flow measurementFDUFDUFMU 862 hDifferentialDifferentialmeasurement forcleaning control2 prosonic FMU 860 ultrasonic measurement in a silo ortank.

4 Non-contact level measurementwith no maintenance even under FMU 862 The two-channel version is especiallycost-effective. When the five relayversion is used to operate twomeasuring points, for example, amaximum and minimum switchpoint canbe allocated to each channel. The alarmrelay signals any abnormal FMU protection against overfill: allProsonic transmitters have an additionalconnection for an external limit when the level moves within theblocking distance of the sensor, this ispromptly indicated by the display, thesignal output and FMU 860 Installation on conveyor belts: rapidchanges in load height are easily dealtwith by the prosonic FMU Ex Zone 10 FDUEx Zone 1 EXFMU 860 FMU 860 FMU 860ororLevel measurement in atank or a silo. TheFMU 862 two-channelversion is used tocollect data fromindividual prosonic transmittershave an input for anexternal limit 860 FDUE xample of ultrasonicmeasurement formonitoring belt loads3 Operation and SignalProcessingPrinciple of OperationAn ultrasonic pulse emitted from thesensor is reflected back by the surfaceof the material or liquid and is receivedby the same sensor as an echo product height or water level is thencalculated from the run time of theultrasonic signal (echo leveldetermination).

5 Simple OperationThe keypad on the front panel is used toconfigure the transmitter and call upparameters, which are shown on a 4 1/2character dialogue is based on the standardEndress+Hauser operating matrix inwhich every input field is quickly andeasily selected using the V (vertical)and H (horizontal) keys. Parametersare simply entered using the three keys , + , and are registered andstored once the E key has Software with FuzzyLogic ElementsThe prosonic transmitter is based onstate-of-the-art evaluation methodsincluding fuzzy logic elements forintelligent echo analysis. No otherspecial procedures are required as thismethod enables the true level echo tobe clearly distinguished from: sporadic reflections ( from agitatorblades), interference echoes and noise ( filling) or multiple reflections ( with closedtanks).

6 Even with almost unfavorable mountingpoints, the advantages of continuous,non-contact ultrasonic measurementcan be used by activating a specialfixed target suppression mode orfiltering Start-UpThe time required for start-up isminimised by using preset operatingparameter values. Selecting just oneparameter automatically sets themeasuring line to one of five typicalapplications. liquid vessels with rapid changes of liquid fine-grained bulk solids coarse-grained bulk solids conveyor beltsComplete Functionality For level measurementThe characteristic curve is alreadyprogrammed for volumetricmeasurement in a horizontal linearisation curve of any vessel canbe easily entered (maximum 32 points).The prosonic FMU 862 also has adifferential measurement mode(Value 1 Value 2)or average value mode(Value 1+Value 2)2 For flow rate measurementAll common Q/h characteristic curvesfor measuring flow rates with flumes andweirs are stored in the prosonic .

7 OtherQ/h curves can be entered (up to amaximum of 32 points).Three different programmable countingpulses for totalising can be sent to therelay outputs for controlling externalcounters. The transmitter itself has aresettable software counter: anon-resettable totaliser is available asan +-EOnly a few input steps arerequired for calibrating allstandard SensortypeRelayselectionRelayfunctionSwi tch-onpointSwitch-offpointPumpcontrolLin eari-sationPresetheightQ/h OperationHandheld TerminalOperating the prosonic transmitter iseven easier if it is connected via a serialinterface. All values can then be enteredusing a handheld terminal. The user hascomprehensive and detailed informationon inputs both on-site and in the controlroom. The measurement remains totallyunaffected during the interactive different handheld terminals areavailable: Commulog VU 260 Z is used with theserial interface for the INTENSOR protocol.

8 It can be connected to allEndress+Hauser instruments with anINTENSOR protocol. Universal HART communicator via theserial interface with the HART protocol(Type C).Electrical ConnectionA minimum resistance must be presentin the circuit for correct transmission ofthe communications signal to take place(see Technical Data).The handheld terminal is connectedeither directly to current output 1 of thetransmitter or to a communications general: The handheld terminal canbe connected anywhere in the signalcircuit as long as there is a resistancebetween its terminals which is largerthan the minimum DataMaximum load: 600 Communications resistor: 250 Screened cable recommended,maximum capacitance 100 via Commuwin IIThe Commubox FXA 191 connectsintrinsically safe Smart transmitters thathave an INTENSOR- or HART protocolto the RS 232 C serial interface of apersonal computer.

9 This enables thetransmitter to be remotely operated withthe Endress +Hauser Commuwin IIoperating +FieldControl mACommunicationresistorConnection of handheldterminals CommulogVU 260 Z (INTENSOR)and Universal HARTC ommunicatorDXR 271 (HART) in thefield and in the IICommuboxoptionalpower mAminimum total resistance 250 RS 232 CConnecting theCommubox5 System IntegrationOther System Components with anRS-485 Rackbus interfaceHardware For connecting to a personalcomputer via an RS-485 card orRS-232C/RS-485 adapter. For connecting to the Rackbus via theFXA 675 interface for the personal computer Fieldmanager 485: configuration anddisplay program for small andmedium-sized plants. Commugraph: easy-to-usevisualisation program with limit display. Commuwin II: display and operatingprogram under to Process ControlSystemsThe prosonic FMU can be easilylinked to existing process controlsystems via the RS-485 FXA 675 interface card (or theMonorack II RS-485) connects twoindividual Rackbus RS-485 networkswith up to 25 transmitters via theRackbus.

10 A second card (Gateway)serves as the bus connection forstandard networks such as PROFIBUS,FIP or prosonic P level measurementsystem also enables a number of widelydistributed ultrasonic measuring pointsto be controlled by a personal 673 RACKBUSPROFIBUSFXA 675 Personal computerwith display andoperating softwareprogrammablelogic controllerField transmitter with RS-485 interfacemax. 1200 mRackbus RS 485 FXA 675 Gateway:ZA 673 PROFIBUSZA 674 FIP ZA 672 MODBUSR ackbusIntegration into processcontrol systems:connecting a network tothe Rackbus via anFXA 675 interface Gateway links it to ahigher control VersionsHousing VersionsProsonic transmitters for mounting in thefield or control room are available withdifferent electronic housings. Field transmitter electronics are built intoan IP 66 housing.