TECT-QLC_english-OP manual
Contents
1. PEE H 4 m 4 Gurt belt y LU A a p 11 Bandrahmen A A conveyor frame rari Id y jA Sonde probe 1 y Bedeutung der Numerierung siehe Checkliste numbering see checklist Bear 15 0499 F Buau Einbauvorschlag Einzel u Tandemsonde in Gyr U Profilrahmen Nem install proposition single and tandem probe in Fag U structual conveyor frame Zachnungsnummer Bat 6204 B20 ti ii A4 Aderung Datum Mia Yo Buimeug uonisog ISu LL VIO T19 2O IO tO193130 NILA IN I AAVHS WL zl 1545 XINDH12 IN SW T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA 12 Warranty e Your METALSHARK metal detector is designed to the most stringent manufacturing specifications fo insure a long life in your industrial environment e Your METALSHARK detector us warranted against defects in materials and or workmanship d IWO year warranty on detector sensor head b ONE year warranty on electronics Tectronix will repair or replace the defective component at its discretion 24 T CTRONIX SYSTEMS INC ME2. 660 Other sizes on request H according to requirement 20 T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA 9 Check list Checklist for points for preventing electrical interference s if mounting the Sensor at a U structural iron conveyor frame if not specified differently 1 Minimum distance between upper rollers and middle of Sensor 500 mm 20 inch 2 Minimum distance between lower rollers and middle of Sensor 500 mm 20 inch 3 Distance between lower Sensor and loaded belt approximatelv 50 mm 2 inch 4 Remove out of the area under the Sensor all kinds of diagonal and crossbeams 5 Structural iron for Sensor mounting is to be welded to the conveyor frame 6 All diagonal and crossbeams within the area of 1000 mm 40 inch around the Sen sor are to be welded not screwed to the frame T One roller stage before and one after the Sensor is to be welded to the frame 8 For one roller stage before and one after the Sensor provide the roller axle with insu lating sleeves required on one side only of each roller or prepare with short circuit brackets 9 Roller stages of lower rollers are to be mounted to a minimum distance of 1000 mm 40 inch to the Sensor 10 Axles of lower rollers of point 9 are to be prepared either with insulating sleeves according point 8 if distance to the Sensor is less than 1000 mm 40 inch 11 The floor legs one before and one after the Sens
3. vIzT ZIL SHARK JE TECTRONIX SYSTEMS INC METAL DETECTOR Type QLC QLCTA oerators Manual English TECT QLC english OP manual doc T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA Svstem Information Customer Name Location Date in Service d m y We would like to take this opportunitv to thank vou for purchasing vour Metal Detector from Tectronix The confidence vou have placed in our product is sincerelv appreciated and we will endeavour to provide the best service and support possible Please take the time to read the User Manual completelv as this provides you with the expertise necessary to install and adjust the sys tem according fo your requirements In addition to this you will learn about the sophisticated options provided by the METAL SHARK elec tronics If you have any problems in fhe set up and operation of your sys tem the Tectronix team are available to assist you Tectronix Systems inc Unit 9 18812 96th Ave Surrev British Columbia Canada VAN 3R Equipment Information Label Telephone 001 604 607 6028 Fax 001 604 607 6026 E mail service 0metal shark com METAL DETECTOR QLC QLCTA Instruction Manual Metal Detector QLC QLCTA Contents 1 General 1 1 Design 1 1 1 Standard unit 1 1 2 Tandem unit 1 2 Function 2 Selecting the installation point and mounting 2 1 Selecting the installation point for the Sensor 2 2 Installation of detecto
4. eee g a a A FL N be x P ui ur ee FE E sensor EE e Us Er Sa fol de ata a de u k atata i m onu a ZE A li an fum Remove out af this area NL ca 50 mm Hollers of the under belt All kinds of metalic sheets spacer Diagonal and crossbeams mal ll Weld together with each other Roller stage Short circuiting bracket covering metal sheet to be welded to each roller U frame nextto the sensor Koller for the upper belt with short dircultino shield Material to be used steel ST 37 11 mind 3 mm thick 50 mm breadth A Position of weld joints T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA Fig 3 How to build in a tandem Sensor in U Frame construction wrong AA SETE ETERN STEEN TEEN Pala ur t Ra ee RR ak RR RUN ee ee I EA AAA ES AA AAA A al Jake y AA LI a EJ right JI xi IE i A Kata a ata kk aa a ma ta ta tata a AAA kl Spacers must not be welded ta any other parts w rong LE nelek Jal gen E NG o A Rann LUE ea aa EEE mr Sansors must not ba mounted on a closed frame wrong right 00 min non conducting side boards metallic side boards in this area in the area of probe AAA A aa aka aa A A mt Ete L I um NI i hi L A amat ERA wkk a m Fares x Wrong sansor mounted on a sole plata out of PVC S
5. Assembling the tandem Sensor METAL DETECTOR QLC QLCTA 3 2 Mounting the tandem Sensor TECTRONIX SYSTEMS INC METAL SHARK The upper Sensor must be mounted exactly above the lower Sensor QConnect upper to lower Sensor by use of the short inter connection cable 6 The distance between the upper Sensor and the belt depends on the maximum height of the burden on the belt f used outdoors the Sensor should be pro tected from direct sunlight Install a little wooden or plastic roof if necessary In order to achieve a high degree of sensitivity the distance between the two Sensors and the belt should be kept as small as possible In case of doubt send a drawing of the intended installation position to Tectronix for evaluation Join parts firmly together no 1 to 4 by means of 4 threaded rods M10 Weld together parts no 4 and 5 1 lower Sensor 2 upper Sensor 3 support for upper Sen LAN sor amplifier 4 spacer 5 frame of conveyor 6 inter connection cable 7 bore hole 11 mm Attention Always use the original coaxial cable from Tectronix Do not use any other coaxial cables TECTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA Fig 2 Build in example for U Frame Conveyor Belts Rollers can alternatively be prepared with insulating sleeves according Fig 6 page 10 mind 1000 or 2x Probe width m E E un om mm Li M M o i BD terrere pea p Ta teca RETE
6. L1 N and PE The range of volt age fluctuations shouldn t exceed 15 96 Connect con trol line to terminal from relay K1 see Fig 7 In Fig 7 the relay contacts are shown in the no current state By means of slide switch S2 on the circuit board see section 5 3 you can decide whether the relay normally carries no electrical current and is actuated upon metal detection or if the relay is normally actuated safety position and is de actuated upon metal detec tion T CTRONIX SYSTEMS INC METAL SHARK The two control lines can be used for conveyor stop conveyor reverse or to activate an ejecting device Fig 7 shows an example for the function conveyor stop In this case the output relay works in the normally de actuated mode The metal detecting device requires only one coaxial cable to connect Sensor and Controller Install the coaxial cable in a plastic conduit and install separately from other current carrying ca bles A distance of 20 cm is normally enough Important Do not confuse hot and ground con nection on Controller terminal strip Fig 7 Connection example with additional wiring locking circuit KA LI N PE 4 7 Cee Ae Ae ee ERA terminal strip potential free nc no contacts metal alarm pulse length 0 5 s aa Li N PE power voltage JL 75 Ohm with solderable off l preparation af with solderable off E the coaxial
7. a at E w a m G wI i fa BB m A na d gi Ur EX map a 032 ba a L mA o Eta T L e in en h n EFT E m m E xt mhu XH Pa vh ii E e Fa mu m i he se Sa T a M il EE m m TR ii brid F za je e s on nt E ia a at e x i ma T m d m n n m En jin TR T Fl ika N d a ms ra zi S a a jn i in a ini u a me ar an za 2n n T Tat A F E 2 E ME E A y 3 2 mo ANI xb T E i E ne Em It Em dan SA g E ia m sw Ka S ba b F m Tut m zu zu im me a E un LX hum iet A d fel mi M a a E m a a JE u Du Du ur E En m Tal md E E Ex 3 E E 33 un Eo mai E ih ke m ch b m c rd 3 ud cn cn cn E E E e e e LL LL ui m 10 No metalic parts must pass through the aperture of the sansor METAL DETECTOR QLC QLCTA T CTRONIX SYSTEMS INC METAL SHARK Fig 6 Eliminating electrical interferences bv insulating sleeves insulating sleeve oller axle oller support oller 3 3 Preventing electrical interferences at the installation point It is important to keep away electrical interferences from the Sensor in order to ensure adequate sensitiv ity and to avoid false alarms The most important measures to prevent electrical interferences are shown in Fig 2 to 6 Wobbly or sagging conveyor belts must be stiffened at the installation point Metal cover plates metal roofin
8. alternating field is built up vertical to the Sensor and penetrates the con vevor belt and the conveyed material If a piece of metal passes within the detection range of the Sen sor the oscillating circuit is slightly attenuated In the detector a pulse is filtered out of the ampli tude surge which switches an internal relay after passing through an Controller The relay is the detector output It has two potential free nc no contacts which can be used to stop the conveyor belt or give a warning signal etc 11 METAL DETECTOR QLC QLCTA 2 Selecting the installation position for Sensor and detector 2 1 Sensor Avoid positions where the conveyor belt is instable The distance between two roller stages has to be at least 1000 mm 40 inch Ifthe conveyor system is to be stopped when metal is detected it must be accessible for removal of the metal parts Take into consideration the distance the belt will travel between stop signal and actual stopping Install far from electric motors and large metallic moving parts at least 1 0 m 40 inch Protect Sensor from direct sunlight 2 2 Detector Control Cabinet Install the detector Control Cabinet in the vicinity of the Sensor e g in the conveyor system control room or outdoors at a position protected from direct sunlight and rain The standard length of the coaxial cable con nection cable between Sensor and detector is 10 m Longer cables u
9. cable screen i il pp I I on pp j Li L2 L3 PE singla sensor ap conveyor belt jr Il K pp o AA B T control voltage power unit AD T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA Fig 8 and 9 Attachment of the coaxial plug preparation af tha coaxial cable Push shank cone batween braid and cable she at until stop washer housing braid shank cona gasket clampring nut solder middle conductor combination connactor torque ratio 7 4 2 Single Sensor Connect the coaxial cable to the Controller as shown in Fig 7 Screw the coaxial plugs into the correspond ing sockets at the Sensor by hand power without using a tool 4 3 Tandem Sensor Use the inter connection cable to connect upper and lower Sensor Other connections as with the Single Sensor Important Do not confuse hot and ground connection on Controller terminal strip 4 3 Attachment of the coaxial plug Prepare the coaxial cable without damaging the braided shield Insert the middle conductor and braided shield in the coaxial plug and solder middle conductor see fig 8 and 9 Use a soldering iron with a constant temperature tip Note Attachment of the coaxial plug must be done very careful All individual wires in the braided shield must remain together under all circumstances Attention Always use the original coaxial cable from Tectronix Don t use any other coa
10. detected like a nut Attach a rope to the test piece Turn the unit on and put selector switch S3 into position operation Empty the conveyor belt and turn off the conveyor Pull the test piece with help of the rope repeatedly through the Sensor tunnel with approximate belt speed Adjust first sensitivity control step by step until the test piece is detected but smaller pieces of metal remain undetected Let the conveyor run without product Watch the LED indicator line If no pieces of metal pass through the Sensor area the LED indicator line should stay in the range of 45 to 55 pA It is recommended to connect the unit to the light net The LED indicator line may move between 45 and 55 uA only if no metal piece passes the Sensor If there are larger deviations especially if false alarms occur the following points should be checked for sources of interference mechanical preparations page 6 to 10 coaxial cable and potential equalizing line page 11 and 13 power supply page 17 For instance Have insulating sleeves and short circuit brackets been installed Have the adjacent roller stages been welded to the frame of conveyor Have the coaxial cables been secured properly If interferences still persist Tectronix will gladly an swer your questions Tectronix will request the serial number and the LED indicator line readings for the two positions of the selector switch S3 Let
11. on the power voltage the LED indication line will light up Dependent on adjustment sensitivity the red LED indicator metal may light up briefly After about 20 seconds the unit will be ready for operation The slide switches can be shifted with a screw driver without dismount the front plate This should be done carefully Shift the selector switch S3 into position adjustment The LED indication line should read between 30 and 70 pA 15 Platine QLC M 004 printed circuit board The slide switches can be shifted with a screw driver without dismount the front plate This should be done carefully Shift the selector switch S3 into position operation The LED indication line should read 50 pA During the operation of the metal detectior the selector switch S3 should be left in position op eration In this position the control instrument gives informa tion about the general operating state As long as the pointer remains relative quite the unit will work well Restless movements of more than 10 96 can indicate noise influences METAL DETECTOR QLC QLCTA 5 2 Adjustment of the sensitivity The right position of sensitivity control is very important for operation A too low sensitivity endangers the ma chinery to be protected while a too high sensitivity will cause unnecessary conveyors stops or material ejec tions respectively Select a test piece that will correspond to the smallest metal piece to be
12. the conveyor run with product Repeatedly throw the test piece into the conveyed material and readjust sensitivity if necessary Attention Make sure that the conveyor belt can be stopped manually if necessary 16 T CTRONIX SYSTEMS INC METAL SHARK 5 3 Setting the slide switches S 1 and S2 The slide switches can be shifted with a screw driver without dismount the front plate This should be done carefully Slide switch S1 in position 1 Operation Mode A metal detection will activate the contacts of the out put relays K1 Slide switch S1 in position 2 Test Mode The relay K1 remains in the state se lected by S2 and will not respond any more Only the red LED indicator Metal will report metal pieces Attention During operation the switch S1 must be shifted to position 1 Slide switch S2 in position 1 Normally relaxed mode that is the relay will be activated for about 0 5 seconds on metal detection and will thereafter resume the relaxed state Slide switch S2 in position 2 Normally activated mode the relay will be acti vated on turning on the unit will relax for about 0 5 seconds on metal detection and will thereafter re sume the activated state In this mode power failure will put the relay in the metal detection state and a duration alarm is given The contacts on the terminal from relay have to be wired according to the selected position of S2 see section 4 1 The unit le
13. TAL SHARK METAL DETECTOR QLC QLCTA TECTRONIX SYSTEMS INC 9 18812 96 Ave Langley British Columbia Canada Tel 11 604 607 60280 Fax 11 604 607 6026 www metal shark com Email service metal shark com 25
14. aves the factory in the nor mally relaxed mode MS INC TAL SHARK CTRONIX SYST NM T METAL DETECTOR QLC QLCTA Fig 12 Internal connection diagram pod SLL9 Hue FU LPEST ureJBeip uon2euuoo JELUSIUI LEE en DIqyeuasx2o g 180 Burnt BSB SW grs JNE i Brugis A epunqdio 700 IN 970 edAydAL r prEoq MOD awad Sure paz ay ab LO EO LN ira preoq moo pejuud 00 N 2710 eugeid 6 Specifications 6 1 Controller Power voltage Power requirements Admissible belt speeds Admissible ambient temperature Inputs Outputs e Metal detection Housing e Mounting e Weight e Dimensions METAL DETECTOR QLC QLCTA T CTRONIX SYSTEMS INC METAL SHARK 100 240 V 50 60 Hz 15 15 VA 0 3 4 0 m s other speeds upon request 20 C to 55 C 1 coaxial cable Sensor 1 relay with 2 potential free nc no contacts for 230 V 6A resistive load choice of normally relaxed mode or normally activated mode Protective device classification IP 55 sheet steel treated by electrophoresis dip primer coating colour RAL 7032 grey 155 380 max 515 Wall mounting 9 kg see figure Use of other operational requirements may be possible upon request 6 2 Sensor Design Material Admissible ambient temperature Single Sensor bulk rectangular plate with built in induction coils Flange attached coaxial socket for electrical connec tion Tandem Sensor like above but with 2 su
15. eam equipment with very little down time It protects your crusher mills mixing and extruder machines The metal detecting device detects all metal e g like steel iron copper aluminium brass stainless steel This manual describes the application in conveyor plants 1 1 Design The metal detecting device consists of two compo nents the Controller and the single Sensor standard unit or the tandem Sensor The Controller and the Sensor are interconnected by one coaxial cable 1 1 1 Standard unit The standard unit consists of an Controller and Sen sor with a plate like rectangular body The Sensor is manufactured for the width of the conveyor frame work All controls on the Controller required for op eration of the unit are clearly arranged behind the front door This standard unit is designed for the stone and earth industries because this device is stable within the surrounding metal construction of the conveyor belt and against vibrations 1 1 2 Tandem unit The standard unit can be expanded to the tandem unit by using another Sensor and two spacers This device has a very constant sensitivity at each point between the two Sensors It is used when there is a high burden depth on the belt Fig 1 Single Sensor in operation 1 2 Function An oscillator located in the Controller feeds the Sensor a high frequency alternating voltage This voltage is fed to the Sensor by a 75 Ohm coaxial cable An electromagnetic
16. g and metal guide plates between the adjacent roller stages must be removed or replaced by wood or plastic parts Return rollers are to be removed in this area Cover plate edges and margins should be welded to the frame if they extend into this area The adjacent rollers should be prepared either with short circuiting shields acc Fig 2 or with plastic sleeves acc Fig 6 Ale supporting the roller axle with insulating sleeve required on one side only f very high sensitivity is not required interference prevention can be done by means of short circuit brackets see Fig 2 and 4 The adjacent roller stages are to be welded to the frame of conveyor belt If they are already bolted onto their support a short welding joint about 15 mm will be sufficient All bolted and riveted connections within 2 m from the Sensor should be secured with short welding joints Note Bolted and riveted connections are unpredictable contacts for electrical currents that are known to raise problems in the vicinity of the Sensor The addi tional short welding joints will solve these problems Preparation of rollers is required either with insulat ing sleeves or with short circuiting brackets METAL DETECTOR QLC QLCTA 4 Electrical connections 4 1 Power supply control line coaxial cable Please make note of power supply voltage and output identification from the specifications Connect line voltage to terminals
17. or are to be welded to the frame if distance to the Sensor is less than 1000 mm 40 inch 12 Line for emergency stop will not influence the Sensor if installed beside the Sensor 13 Root covering plates over the conveyor belt or between upper and lower conveyor belt should be made out of not conducting material in the area at 1000 mm 40 inch be fore and 1000 mm 40 inch after the Sensor Structural iron supports for roof covering are allowed but all parts of it should be welded with each other 14 A potential equalisation line is to be connected between conveyor frame and earth terminal of Controller See section 6 4 15 Install coaxial cable separately from other loaded cables except cable for potential equalisation The potential equalisation line should be installed together with the coax ial cable in one plastic conduit Crossing other loaded cables is allowed but no instal lations less than 1 m 40 inch parallel to those loaded cables Moreover it is important to take into consideration the mounting instruction bulletin 21 T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA 10 Spare Parts SPARE PARTS O m me m ja a E ALC QLCTA ITEM DESCRIPTION PLACE QUANTITY TYPE AND ORDER NO KEE I fee e E p em emr ono ERN NN Deme E eee 22 ec
18. pacers must not be welded to any other parts w rong see above m en o im m m mum m m m Statt e attt tta In casa of vibrations or torsions ar if a high sensitivity is desired tha probs is ta be mounted on a sole plate out of PVC w rong Do not assemble Fi io 1 4 by using span pe Pee mechanism E UE ORC TECTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA Fig 4 Mounting example for pipe frame construction short circuiting brackets DS mos il 4 jest a Nee arl o que HE a a Sensor ee o ke 1 ka aa a Remove diagonal beams if they are touching the sensor or are under the sensor Cross section A A belt roller short circuiting bracket ge E mu rr cansam P En A EP RT P nn nen AAA ml ia et ninm ams ju ha T E a Tl zu cu 2 d ETE m A MS INC TAL SHARK CTRONIX SYST M T ion frame construct in a pipe METAL DETECTOR QLC QLCTA Fig 5 How to build in a tandem Sensor un LI 25 B Sn Em A co M ver in E 5 LI ne i ag ri ER bind gI f Le ikel ae xi 1 mE E E wu mi a E JE S z s 53 F nr s a an mE Li Ee T E un E aH n ah rd E E 5 z 88 rw ne a D FE ee a ke ha s s a af M kJ ab kal ae 2 P c 22 tate ah Aa mi kat a ne jag i 4 RS tet Tel e DE tc a ah Es mei im 5 Eje og
19. pon request 3 Mounting the Sensor and eliminating electrical interferences at the installation position 3 1 Mounting the single Sensor Check that the serial numbers of Sensor and detector Control Cabinet are the same Mount the Sensor as indicated in figure 1 and 2 whereby the cast pattern should point upward The clearance between the Sen sor and the bottom of the belt should be 40 50 mm 1 5 to 2 inch corresponding to maximum belt sag expected Angular brackets and U channels should be used to mount the Sensor to achieve a high degree of positional stability and eliminate distortion Conveyor belt which shakes or sags must be stiff ened at the position where the Sensor is installed Any type of installation deviating from the above should be discussed with the supplier beforehand It is important that the Sensor is connected solidly with the conveyor belt construction and the no movement is possible relative to the surrounding metal construction Check that the serial numbers of Sensor and detector Control Cabinet are the same The tandem Sensor should be assembled as indicated in figure 1 and 2 When mounting the Sensor consider the following Mount the Sensor at the midpoint between two roller stages The cast patterns of the two Sensors must be mounted face to face The clearance between lower Sensor and loaded belt should still be 40 50 mm 1 5 to 2 inch if maximum belt sag may occur Fig 1
20. pport parts and electrical connections in terminal box Sensor body out of PVC PE or PA6 6 coils cast into 2 component resin PE version from 30 C up to 70 C PA6 6 version from 50 C up to 120 C 18 TECTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA 7 Metal detecting device with single Sensor Components you need for 1 detector metal detecting devices with 1 Sensor single Sensors 1x 10 m special coaxial cable 75 ohm surge impedance Nominal sizes mm other sizes on application Installation mm clearance between belt and lower Sensor Single Sensor Nominal A B C D for belt weight sizes width up to mm mm mm mm mm ko 700 400 640 260 700 400 640 260 1600 1900 500 1820 300 1600 960 Other sizes on request 12405 TECTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA 8 Metal detecting device with tandem Sensor Components you need for 1 detector metal detecting devices with 2 Sensors tandem Sensors 2 special supports 1x 10 m special coaxial cable 75 ohm surge impedance Nominal sizes mm other sizes on application Installation mm clearance between belt and lower Sensor Tandem Sensor Nominal A B C D L for belt size width up to weight mm mm mm mm mm mm ka 700 400 700 400 640 260 600 500 460 800 1000 400 940 260 900 800
21. r control box 3 Preventing electrical interferences at the installation point 3 1 Mounting the single Sensor 3 2 Mounting the tandem Sensor Jud Eliminating electrical interferences at the installation point 4 Electrical connections 4 1 Power supply and control line 4 2 Single Sensor 4 3 Tandem Sensor 4 4 Attachment of the coaxial plug 4 5 Potential equalization line 5 Start up 5 1 Turning on 5 2 Adjustment of the sensitivity 5 3 Selecting the relay output contacts 6 Specifications 6 1 Controller 6 2 Sensor Metal detecting device with single Sensor Metal detecting device with tandem Sensor Check list 10 Spare Parts 11 Install Position Drawing 12 Warranty Page O 0 O1 0 GO RA A A FA N N D NN mu Au o uu dA Lo aa au aa dd u N O O O OO OM 0 C A C C W DP ND T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA Warning TECTRONIX SYSTEMS INC METAL SHARK Before operating inside the Controller cabinet or inside the connection box switch off power supply and control voltages 1 General The Metal Detecting Devices type QLC and QLCTA are especially developed for stone and earth indus tries It is reliable resistant and requires little mainte nance With this metal detecting device it is possible to control material with a high percentage of metal oxides like e g basalt slag magnetite magnesium oxide and blood stone The metal detecting device protects your downstr
22. xial cables 13 T CTRONIX SYSTEMS INC METAL SHARK METAL DETECTOR QLC QLCTA 4 5 Potential Equalization Line To this In spite of the fact that the conveyor and the Controller Use a contact area close to the Sensor Clean are connected to the grounded wire there are often contact surface very well and use a tooth lock high peak potentials between these two devices The washer metal detecting device reacts with false alarm With a Connect to the grounding screw in the Control direct potential equalization line these potential differ ler ences are shorted and removed Cross cut of the potential equalizing line should be 2 5 mm 4 1000 inch minimum Note Do not lay the potential equalization line together with current carrying lines Lay it to gether with the 75 ohm coaxial cable Controller potential equalization line mind 2 5 mme i Fig 10 Installation of the Potential equalization line 14 METAL DETECTOR QLC QLCTA T CTRONIX SYSTEMS INC METAL SHARK Fig 11 Operating and controlling elements of the Controller switch for service switch for relay funktion LED indicator matal potentiometer far sensitivity adjustmen selector switch 2 adjustment operation me ne icd 30 31 32 33 5 Start up 5 1 Turning on After connecting the Sensor the power supply and the control cable the unit should be started up as fol lows Switch
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