LR Series Transducers

Transcription

1 LR Series Transducers Instruction Manual PL-526 December Rev 1.1 Technology based. Customer driven.

2 Thank you for purchasing Milltronics products. We endeavour to design equipment that is simple to use and reliable in its operation, with the aim of satisfying our customers needs. Milltronics has been designing and manufacturing process equipment since Our fields of expertise include ultrasonic level measurement, in-line weighing of dry bulk solids and motion sensing. Milltronics is established world wide through associate offices and representatives. Our network is continually being refined to provide our customers with first rate sales information, engineering assistance and after sales support. For more details on our products and service, please contact us and we will provide you with a listing of the offices or representatives nearest you. Canada : 1954 Technology Dr., P.O. Box 4225, Peterborough, Ontario, Canada K9J 7B1 Tel.: Fax: U.S.A. : 709 Stadium Drive, Arlington, Texas U.S.A Tel.: Fax: England : France : Belgium : Mexico : Internet : Oak House, Bromyard Road, Worcester, England WR2 5XZ Tel.: Fax: Parc de la Sainte Victoire, Bât. 5, Meyreuil, France Tel.: Fax: August van de Wielelei 97, 2100 Deurne, Antwerp, Belgium Tel.: 03/ Fax: 03/ Amores No. 1155, Col. Del Valle, Mexico D.F., Mexico Tel.: / / Fax:

3 ABOUT THE TRANSDUCER The LR series of s operates in association with Milltronics ultrasonic level monitoring products. The converts the electrical energy of the transmit pulse from the transceiver into acoustical energy. It then converts the acoustical energy of the echo back into electrical energy for the transceiver receive period. The effective acoustical energy is emitted from the face and radiated outward, decreasing in amplitude at a rate inversely proportional to the square of the distance. Maximum power is radiated axially (perpendicular) from the face in a line referred to as the axis of transmission. Where power is reduced by half ( 3 db), a conical boundary defining the sound beam, centered about the axis of transmission is established. The diametric measurement of the cone in degrees defines the beam angle. Impedance matching techniques are used to optimize the transfer of power from the into air and vice versa. face 3 db boundary 5 beam angle axis of transmission, perpendicular to face SPECIFICATIONS Model : LR-21 LR-13 Measurement range :» 0.9 m - 30 m» m ( typical ) ( ft ) ( ft ) Frequency :» 21 KHz» 13 KHz ( typical ) Beam angle :» 5» 5.5 Weight * :» 3.9 Kg ( 8.5 lb )» 7.7 Kg ( 17 lb ) Environmental:» location:» indoor/outdoor» altitude:» 2000 m maximum» ambient temperature:» 40 to 70 C ( 40 to 158 F )» pollution degree:» 4 Supply source: Construction : Separation : Approvals : Patents :» shall only be supplied by Milltronics certified controllers» aluminum housing with polyethylene and styrofoam face» 1" NPT mounting/conduit connection with neoprene jacketed cable» 365 m (1200 ft) from transceiver» CE, CSA, FM, SAA, BASEEFA / CENELEC» Canada, U.S.A., Mexico, Europe, South Africa, Japan, Australia * approximate shipping weight of with standard cable length EMC performance available upon request PL-526 3

4 OUTLINE AND CONNECTION blk/ hot wht/ shld black red (hot) terminal block in junction box hot Milltronics transceiver RG 62 A/U cable cable green shield shield to approved ground of junction box and conduit 1" NPT h LR-21 h 178 mm (7") d 267 mm ( 10.5") LR mm (9") 356 mm (14") d DO S AND DON TS Do not route cable openly in raceways. For optimum isolation against electrical noise, run cable in a grounded metal conduit with no other cabling (except temperature sensor). Ground shield only at transceiver. Insulate shield at junctions to prevent inadvertent grounding. Installation shall only be performed by qualified personnel an in accordance with local governing regulations. Seal all thread connections to prevent ingress of moisture. Do not run cable near high voltage or current runs, contactors and SCR control drives. PL /05/12

5 MOUNTING DO S AND DON TS Mount the so that it is above the maximum material level by at least the blanking value. Refer to the associated transceiver manual. Do not overtighten mounting. Hand tightening of the mounting hardware is sufficient. An Milltronics Easy Aimer should be used to facilitate aiming of the. Consider the optional temperature sensor when mounting the. Easy Aimer (typical model) The LR-13 could emit hazardous sound pressure. It shall be installed in such a manner that the sound pressure will be reduced to a non-hazardous level. Wear proper ear protection in the vicinity of the operating. PL-526 5

6 APPLICATIONS (typical) The is to be used only in the manner outlined in this instruction manual. The requires no cleaning or maintenance. optional Easy Aimer bin wall seams filling profile emptying profile 1. Transducer angled to avoid seams in bin wall and aimed at discharge in order to read bin when empty. 2. Avoid intersecting bin wall seams, structural members and wall irregularities. Otherwise, refer to transceiver manual. 3. Transducer too close to material inlet. Falling material will intersect sound beam and cause erroneous readings or loss of echo. minimal angle of repose discharge 4. On fluid like solids, aim perpendicular to material surface. 5. On dual discharge bins, aim each at the discharge point. PL-526 6