. 14 MB]. The bottom roll (Fig. No TEACH-IN required. 255 Programs. 6 mm in a single sheet thickness. A double-sheet detector can either be mechanical or electric, and is attached to a caliper roller placed between the forwarding rollers. Where to Buy. epaper read . Please call or email us with your request. 4 mm. Because there are two probes, with the metal passing between, the probes do not come in contact with the metal, a valuable piece of information for customers looking for a non. Ambient dataDouble Sheet Detector From Germany We represent :- M/s. 15 de. See your schematic diagrams. . doc @ 5029 Double Sheet Detector E20 R1000 series Electro magnetic principles – microcontroller based Single – sided contact double sheet control of ferrous materials No force after measurement Double sheet control of 0. What is important: The. , paper). This device is suited for fluttering sheets. DOUBLE SHEET CONTROL SYSTEM I100 Application When feeding sheets automatically, more than one sheet can be inadvertently fed into the processing machine. double sheet sheet detector control unit document operator control Prior art date 2000-11-15 Legal status (The legal status is an assumption and is not a legal conclusion. 5500 Order international: +1 609. ) Pending Application number CN201710326557. Double Blank Detection Option on Transfer Stamping Gripper Racks. In addition to many controls for the can making and sheet metal industries, we produce a full line of metal sensing devices geared towards the detection of double sheets of metal. Version: 2 x M18 axial. Meas. Circuit Breaker Switch 15 AMPS for Baum Folder BAU-30920. The detector system may be used on automatic sheet feeders where double or overlapped sheet material may jam or damage the receiving machine. used. exheidmech, Sep 8, 2009. The following situations can be detected: No sheet, i. if there the Double sheet can be faulty and replace, or repair. The system can also be used for Hidden Parts Detection. show less . Double sheet sensor UDC-18GS-3EP-IO-0,2M-V19. 2 /3) either runs on the sheet stream (standard setting) or is positioned slightly above the sheet surface. 00. As a result of the evaluation, corresponding. Protected With SSL Certificate. Model DS161 DOUBLE SHEET DETECTOR . 100% Satisfaction Guarantee. This wave is evaluated by the ultrasonic receiver on the opposite side. Particularities: Linearized air gap tolerant double sheet sensors. It is composed of the circuit to transmitting ultrasonic wave, the circuit to process ultrasonic wave received and the determination circuit. 5 mm 0. The Model DS61 sources current from both outputs. Inch the press to 147 degrees and check the values in these positions. Perpendicular or inclined sensor mounting relative. The holding magnets should be. 2 Ultrasonic Double Sheet Detection 3. The double sheet detection is based on the ultrasonic thru-beam principle. Mar 16, 2023 (The Expresswire) -- "Double-Sheet Detector Market" Size, Share and Trends Analysis Report 2023 - By Applications (Packaging Industry,. Double sheet detection of steel sheets with 1 mm thickness, 120 % double sheet threshold and two PW42AGS sensors requires in the sequencer mode only 115 milliseconds. DESCRIPTION. Doublesheet detection can be used for a variety of materials. g. Since the most sensitive area of the ultrasonic sensor is at the center of the transducer, the center of the sound beam must be. 25 degrees. 25mm to a max of 2. Shop our collection of Sheets & Bedding Sets online and get FREE shipping for all orders that meet the minimum spend threshold. 1) Inductive with Dual Probes (Non-contact) 2) Eddy Current with Dual Probes (Non-contact) 3) Magnetic with Single Probes (Contact) INDUCTIVE WITH DUAL PROBES . The dbk+4 detects missing, single and double sheet. Minimum 1 Each. Material + Thickness: FE-Material: up to 4 mm. 6 mm. ) If all else fails you can turn off those sensors (not reccomended) seanryder, May 2, 2014. 2) Look for dirty, or oil, or gread in the connector of sensor. Also clean the “P” receiver or fiber optic and the bottom of the double sheet detector paddle. The E20 is a double sheet detector especially used for metal sheets and ferrous materials. Noncontact ultrasonic double sheet detection Emitter/receiver distance: 50 mm to 150 mm Very short response time of just 30 ms Interface: IO-Link 1. Have a question? Email us. His company provides technology for. . The Model DS1522 Double Metal Sheet Detector comprises a control module in a sheet metal. Double Sheet Metal Monitor - Double Sheet Detector BDK for ferrous and non-ferrous sheet metal (contact measurement up to 5. e. Pull the small black mushroom shaped plunger forward and. Backflow preventer valve 350ASTDA has double check detector assembly with stainless steel body, grooved gate valve. There are two types of air gaps in case of double sheet control. Very wide material spectrum, finest papers up to thin sheet metals as well as plastic- and metal foils. The detector system may be used on automatic sheet feeders where double or overlapped sheet material may jam or damage the receiving. Sensing Range (Between Sensor Heads) Detectable Sheet Thickness: Applicable Controllers GD-C1/C2: Setting Distance 5 mm 0. Single-sided double sheet detector for ferrous material, air gap tolerant,for sheet thickness from 0. If so you will need to replace it. The product 'UDB-18GS-2E3-0,2M-V15' is already on your watch list. Function indicators visible from all directions. Reliable double material detection is easier than ever before with the new range of IO-Link double sheet sensors in an M18 or M30 design from Pepperl+Fuchs, the market leader in ultrasonic sensor technology. Single-probe, contacting double sheet detector for Ferrous Metals (Steel and Tinplate) with pulse and release technology. ) sheet. July 8, 2010 - Prime Controls, Inc. Roland Double Sheet Detector are required in blank feeders, sheet destackers, robot loaders, blank washers, sheet conveyors, to provide tool and die protection for stamping presses. MICROSONIC GmbH - Double Sheet Detectors – using ultrasonic technology has broken all previous performance records. The following situations can be detected: l No sheet, i. pdf 1. The dual head Double Sheet Detector I100 has been designed to prevent such events. They incorporate a meter to detect ground leaks and unauthorized illegal taps, greatly reducing annual water expenses. Page 40 Manual Double Sheet Detector R100 I100 for pairs of sensors B0003308 / 1. Double sheet control. 04 to 4 mm sheet thickness. . Different sheet materials and layer thicknesses can beThe invention relates to a high-precision ultrasonic double-sheet detector. 6 /5 ·Double sheet sensor UDC-18GM-400-3E3-Y235849. The following situations can be detected: No sheet, i. For single-sided double sheet control different systems are available: sensor system based on permanent magnets, system with electromagnets and a system with a combination sensor. The signal from the stacked sheet ("double sheet") is so weak that it hardly gets to the receiver. Contact a supplier or the parent company directly to get. . Manufacturer: Komori Model: LS 429 LX Colors: 4 Size: 20 x 29 EM-model, PQC-S, KHS-AI, PDC-S II, CIP3, Suction belts in feeder, Anti static device, Ultrasonic double sheet control, Presetting sheet paper size system, Straight machine, SAPC Semi Automatic Plate Change, Komor. Double sheet detector for automated transaction machine: 2001-06-05: Ma et al. $108. RELAY DOUBLE NO DOUBLE DOUBLE CALIBRATE Model DS162 Double Metal Sheet. Wakefield, United Kingdom. The following situations can be detected: l No sheet, i. A100 Rev. 60 mm , optimal distance: 45 mm, Thread mold: M18, Construction type. Single Sided double sheet detector for all metals 0,05- 4mm thickness. Data sheets. The thickness is reported via two form C relays as “nominal”, “over”, “under” or “nothing”. An image reproduction device is provided with an automatic feed unit for documents; a double-sheet detector for detecting more than one single sheet as the document for copying; an operator control unit provided with an operator control panel; and a control unit connected to the said units for controlling the automatic feed unit, processing the signal. The same technology behind double sheet detection can also be applied to label detection applications. Double Sheet Sensors. The universal BDK-Doublesheet-Detector-system is firmly established in the automotive industry. Robot-Loader Based on its design this robot loader is suitable for. The dbk+5 is manufactured by Microsonic. Based on an ultrasonic sound control, sheets lying on top of one another which were picked-up are recognized and actively ejected before they reach the first buckle plate unit. <link rel="stylesheet" href="Sheet Detector R1000 Series E20 Electro magnetic principle. Prime Controls provides vital inspection solutions for 2-piece beverage can plants all around the world. Product Lineup: Specific Solution Sensors. Double sheet sensors are ultrasonic thru-beam sensors that have been optimized specifically for sheet feed applications, including double sheet detection, label counting, and splice detection. 08 to 3. Even the smallest scratch on the surface or manufacturing steps that are not. double end detection on a seamer: Double Sheet Detectors (Examples) More applications on canmaking machines: Fig. Do this one at a time for each of the detectors. 05 - 12 mm ( . The DS-FLEX is a multi-channel, mix-n-match double sheet detector that offers users the ability to detect double sheets of metal, the presence or absence of metal, all within one detection system. Report this post Report Report. Data sheets. The new Pulser Double Sheet Detector features a newly-designed single probe with a pulsed electromagnet that. The "double sheet detection" or "double material detection" application originally comes from the printing industry. An image reproduction device is provided with an automatic feed unit for documents; a double-sheet detector for detecting more than one sheet as the document for copying; an operator control unit provided with an operator control panel; and a control unit for controlling the automatic feed unit, processing the signal from the double-sheet detector and. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33. Double sheet sensor detection is under the principle of detecting one or two materials by measuring the ultrasonic strength. Double Sheet Detector Jun 2, 2021 modular conveyors and transfers May 20, 2021 Cable Management Solution-Round cable entry plates for single cable- alternative for Cable Glands. The "double sheet detection" or "double material detection" application originally comes from the printing industry. Only the selected side guide will show feedback. Our double sheet detectors are trusted by the top automakers from around the world. • Dynamic: The double sheet with nominal thickness is moved through the sensor gap while performing the Teach-In for 2-sheet. . Ultrasonic double sheet sensors from Pepperl+Fuchs are ideal for double-sheet monitoring of paper, cardboard, plastics, metals, and more. UD18 ultrasonic sensors reliably check whether a paper sheet is present in the paper feeder. 4mm = 160mm thus a 1mm sheet would rotate the encoder about 1/160 * 360 or about 2. First in the Market!. 1 Operating Principle of Amplitude-Measuring Ultrasonic Sensors 3. 3, semi-conductor relay outputs BDK-ET/FP-1. It is especially design for probing corrugated cardboard, as. Non-Ferrous Metal Sensors IBD - Non-contact detection of non. e. 6 M Eagle Eye AA Data Sheet. Pepperl+Fuchs 235851 Ultrasonic Sensor, Double Sheet Detector 3 PNP XNC - Easy Online Ordering, In House Tech Support, and Free Shipping on Orders Over $100!The ultrasonic double-sheet detector is used wherever automatic differentiation between single and double sheets is necessary to protect machines or prevent rejects. Double Sheet Detection. ParaCrawl Corpus. If the system is to be operated with a gap between the probe and theProduct data sheet Rev. Construction Pulp and paper Material handling Level measurement Diffuse and Retroreflective Mode Sensors Ultrasonic sensors are most commonly used in the diffuse. There, the occurrence of a double sheet must be reliably detected with an extremely short delay in order to avoid time-consuming and cost-intensive system downtimes. Lokalizacja: Europe Western. . 02. 4528 Gateway Circle T 937. The radiation emitters are operated to emit radiation at periodic intervals. US$ 2-100 / Piece. Buy Surplus As Low As. A Double Check Detector Assembly shall be installed on fire protection systems when connected to a drinking water supply. . Page 1 DOUBLE SHEET CONTROL R1000 SERIES E20 Pos : 1 /D oppelbl ec h/Geräte/E20/Dec kbl att/D ec kbl att @ 1\mod_1192448868578_501. Inspection of the sheet thickness and output of a warning signal when detecting double sheet. Place a rag on the feedboard to prevent excess cleaner from dripping on the feedboard. The following situations can be detected: l No sheet, i. Parallel interfaces to PLC, 9 Fieldbus Systems. e. ). 197 in. The bottom roll (Fig. The following situations can be detected: l No sheet, i. 1000 mm x 1000 mm. This tool is used for detecting structural boundaries in metal. The A100 double sheet detectors 10 to 55 Hz, Double amplitude 1. | 684 followers on LinkedIn. DD-860. Safety- information: The double sheet detector sensor output contact is often used for stopping sheet transfers or sheet working machines. Quality requirements for high gloss products are very demanding. Data sheets. 05 - 12 mm ( . * Check the double sheet detector for accuracy, if you have been noticing that the double sheet detector in not working correctly and have tried to adjust it. The radiation emitters are operated to emit radiation at periodic intervals. Double sheet detection Detection of one, two, or more layers of materials such as foil, paper, cardboard, labels, or even thin metal sheets In addition to double sheet testing, typical applications are film tear detection, bonding surface detection, and label inspectionSingle sided Double Sheet Detection FE-Material from 0. This system may be used on automatic sheet. Fig. #3. 50 m. Ten Color Double Coater. VAT. The Model DS152 Double Metal Sheet Detector comprises a control module in a sheet metal housing with two probes to form a system that detects the thickness of metals passing between the probes. pdf 1. dbk+4/3CDD/M18 E+S. Messages: 50. 16 in) sheet thickness. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33. 1 (spec. To top. - and aluminium sheets with internal amplifier 22 Double Sheet Detector with 0- 10 V with boths. The detector system may be used on automatic sheet feeders where double or overlapped sheet material may jam or damage the receiving machine. As a result of the evaluation, corresponding. ) Expired - Fee Related Application number JP2001347007A Other. If a double sheet occurs, it is turned or lifted. 3. $113. Press the SETUP key and then the NEW key, a new Teach-In procedure will then be performed. Cable length max. This applies to highly automated production facilities in the automotive industry just as much as to the mass production of food and beverage cans. Units are available in two sizes with 13 jaw styles each, up to 500 pounds clamp force, and include many options for mounting, switches, and tips. The dual head Double Sheet Detector I100 has been designed to prevent such events. arc broken wire ultrasonic. 255 Programs. pdf 1. USA: +1 330 486 0001. Perpendicular or inclined sensor mounting relative to the sheet plane possible. The thickness is reported via two form C relays as “nominal”, “over”, “under” or. The attenuation of the receiver signal is displayed, analyzed and issued as a 0-1-. Double layer detection. 04 - 3. Double Sheet Detection is an important part of quality control to prevent two or more sheets of metal from entering into a process at one time. Function principle: Electromagnetic double sheet sensor. LABEL OR DOUBLE SHEET DETECTION • Ultrasonic transmission source • Detection of transparent, opaque, or printed labels • Simple and precise setting of the switching threshold via teach-in button or plus/minus buttons • Not affected by metalized colors • Response time of 250 μs UFN – The clear choice for detecting transparent labelsTo get more information about this product such as machine compatibility, pricing and availability and to purchase, registration at MyTRUMPF is required. Ambient dataKlaschka offers a wide range of Double Blank Detectors for sheet detection and thickness measurement in the metal-forming industries. Double sheet metal monitors and thickness measurement devices monitor the automated destacking and separation of ferrous (Fe) or non-ferrous (NE) metal sheets in metal processing equipment (e. Besides the mechanical double sheet detector, a sheet ejection with contact-free double sheet monitoring is available for the Stahlfolder TH/KH. - . By utilizing the detector, the paper feeding. e. e. 3 mechanical double sheets detectors 1 electronic double sheet detector 2 inter decks dryers IR/TL between 2 coating unit Final Dryer IR/TL/UV Rolandsecomatic PressManager Smart- Man online . In the meantime, however, the range. The double sheet detection is based on the ultrasonic thru-beam principle. Permits double sheet/blank detection with minimal magnetic attraction of the sheet. Leading developer and manufacturer of sensors and controls for manufacturing environments. air l Single sheet l Double sheet or multiple sheets (a statement on the number of sheets is not possible here) The signals are evaluated by a microprocessor system. As a result of the evaluation, corresponding. The following situations can be detected: l No sheet, i. 5 for sheets up to 0,5 mm and Type S 1. For plastic foils it is 27°, while 11° is recommended for (semi. You have to pull the main cover on the gear side (non op). e. e. Apr 2014. There, the occurrence of a double sheet must be reliably detected with an extremely short delay in. If you have a dark area in the first 10mm to 25mm at the lead of the sheet your double sheet detector thinks there is a double. Particularities: Linearized air gap tolerant double sheet sensors. 06", 2 hours in each of the X, Y, and Z directions. 6 M Argusauge AA Datenblatt. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. An image reproduction device is provided with an automatic feed unit for documents; a double-sheet detector for detecting more than one single sheet as the document for copying; an operator control unit provided with an operator control panel; and a control unit connected to the said units for controlling the automatic feed unit, processing the signal. Score Wheel Blade Thin for Baum 714 BAU-06379. Probe Models PM4, PM10 and PM15 operate with both detectors. For instance, some new dual-head control units have a special correction function for magnetic noise generators. 02. The task of the double-sheet sensor is to identify two or more pieces or sheets inadvertently adheri. Backed by 25+ years of experience, Prime Controls’ extensive line of world-class double sheet detection solutions improve your bottom line, boost product quality, and ramp up your manufacturing efficiency. g. DOUBLE SHEET DETECTION. 5000 lbs. Same-day shipping on most products. Double feed detection of various metal sheets. The detector system may be used on automatic sheet feeders where double or overlapped sheet material may jam or damage the receiving machine. For thicker materials, plastic sheets and coarse corrugated cardboard, the dbk+5 ultrasonic double-sheet detection is used. The double sheet detection is based on the ultrasonic thru-beam principle. The Model DS600 Double Sheet Detector control module and P80T30P probe comprise a system designed to differentiate a wide range of material thicknesses for non- ferrous metals. air l Single sheet l Double sheet or multiple sheets (a statement on the number of sheets is not possible here) The signals are evaluated by a microprocessor system. If the roller wheel was on a arm 25. the measuring channel or the program by the PLC. No adjustments, no settings required to differentiate single & double sheets of paper, synthetic or similar material even with dissimilar combinations. steel sheets with external amplifier 21 Double Sheet Sensors with 0- 10 V for magn. Try cleaning (dusting off) your feed board sensors (the electronic double sheet detector as well as the sensor under the transfer cylinder, you have to reach under to get to that one. When two sheets passes the detectors by overlapping the back edge, the detectors will allow to pass the sheets because of the gap set to three sheets. New: Our innovative eddy current sensor for the detection of layers,. air. The "Oil suction effect" on metal sheets in a stack, whereby remnants of die lube can allow. Order toll free: 800. Roland Electronic produces and distributes highly specialized systems for Double Sheet Control,Weld Seam Detection,Thickness Measuring,Non-Destructive Testing,Special Products Choose a language Choose a language English Deutsch Français 汉语 Italiano 日本語 Português brasileiro Castellano Türkçe Reliable double material detection is easier than ever before with the new range of IO-Link double sheet sensors. MODEL DS1522 DOUBLE SHEET DETECTOR . pdf 1. 2. Insensitive to printing, colors, and shining surfaces. ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. In case of CD102year2000, first unit electrical box has been already prepared for detector and DSD condition is diplayed in feeder LCD. The device works by measuring the thickness of the material fed, if excessive thickness is detected, the device triggers an alert or halts the process. Retainer BRG for Baum Folder BAU-45269. MAGNETIC DETECTOR 3,069,601 2 Sheets-Sheet l A. 288. detector double shell 2probe analog 24vdc aluminum: schneider electric: hyde park: request quote: fm-udk10: double sheet detector model fm 10watts 117vac: peco package inspection: request quote: is231: double sheet detector fit it and forget it: innovative sensors: request quote: it01ez: sheet detector double, 24vac/dc 3w: jungmichel:. A lower cost solution may be to use a rotary optical encoder. AA-Eagle-Eye EN Rev15. Each fixture is mounted on the frame of the destacker in such a manner that it can be moved up and down by means of a lift cylinder. . Besides the mechanical double sheet detector, a sheet ejection with contact-free double sheet monitoring is available for the Stahlfolder TH/KH. Total Revenue: US$1 Million - US$2. 3 — 4 June 2014 4 of 19 NXP Semiconductors SA612A Double-balanced mixer and oscillator 7. AA-Argusauge DE Rev15. Type. Function: The Double Sheet Detector UDK20 combines the electromagnetic and eddy. Reliable double material detection is easier than ever before with the new range of IO-Link double sheet sensors in an M18 or M30 design from Pepperl+Fuchs,. On All Domestic Orders. Up to four double sheet sensors of the same type can be connected (Version 4P) ROLAND ELECTRONIC Double Sheet Detection System UDK20 Electro magnetic and eddy current principles - integrated in one sensor Panel mount All common fieldbus technologies V_/ Single probe contact double sheet control of ferrous and non-ferrous materials. double sheet sheet detector control unit detector Prior art date 2000-11-15 Legal status (The legal status is an assumption and is not a legal conclusion. The double sheet detection is based on the ultrasonic thru-beam principle. In the sheet processing industry, it seems that nothing is so desired, yet so elusive, as a single-probe, gap-tolerant double-sheet-detection system. e. The Model DS102 Double Metal Sheet Detector comprises a control module in a sheet metal housing with a single probe to form a system that detects the thickness of metals passing the face of the probe. trip switch wheel, the double sheet detectors are set by placing three sheets between the detector wheel and a trip switch present into the feed board. pdf 1. Ultrasonic double sheet sensors offer a simple, cost-effective, and flexible solution. 2. As a result of the evaluation, corresponding. Single sheet. It detects double sheets,. On the top or side of the box should be 2 black wires which go to your double sheet detectors. The DS-FLEX is a multi-channel, mix-n-match double sheet detector that offers users the ability to detect double sheets of metal, the presence or absence of metal, all within one detection system. A double sheet detector includes a pair of rollers forming a nip through which a fed sheet passes, causing the rollers to separate. They can be mounted so that sheet detection takes place while the robot arm is moving and incorrect feed-in can be stopped at an early stage. Weld Seam Detection Data Sheets | Manuals Non-destructive Material Testing Data Sheets | Manuals Sheet Thickness Measuring Data Sheets | Manuals Special products Data Sheets | Manuals Accessories Data Sheets | Mounting InstructionsThe ultrasonic double-sheet sensor for the detection of double sheets is used in any situation, where it is essential that a me ans be provided for the automatic distinction between double and sing le sheets, in order to protect machinery and/or to avoid waste . Ajda . #5. PART # 739543. 14 is a graph showing examples of calculated original phases associated with each correlation filter and a calculated virtual amplitude for a shingled double sheet passing through the detector. (single sheet thickness) - Non-ferrous materials . The Double Sheet Detector UDK20 combines the electromagnetic and eddy current measurement principles. Warranted to be free from defects in materials and workmanship under normal use and service. In contrast, the same measurement with program switching by the PLC requires more than 370 ms. To top. <link rel="stylesheet" href="Page 1 DOUBLE SHEET CONTROL E20 Double Sheet Detector R1000-series E20 with integrated fieldbus interface Pos : 1 /D oppelbl ec h/Geräte/E20/Dec kbl att/D ec kbl att @ 0\mod_1173195768953_501. <link rel="stylesheet" href="double metal sheet detector dbk+5. | Prime Controls is a manufacturer of press protection equipment in the metal forming industry. The new connection cables. The 5 sensors TN08S, TN15S, TN30S, TN40S cover a measurement range from 0. Featuring a metered bypass system, the 350DA efficiently and effectively detects leaks and any unauthorized water use, saving you added costs associated with maintenance and repairs. Double sheet sensors are ultrasonic thru-beam sensors that have been optimized specifically for sheet feed applications, including double sheet detection, label counting, and splice detection. 197 in. The machines with which this sensor can work are many, for instance printing, folding and labelling machines. method: Single side Double Sheet Detection. A constant gap is very important since a small change in gap causes significant change in the sensor signal. IN STOCK! IT01EZ Sensors & Switches from JUNGMICHEL 2-Year Warranty, Radwell Repairs - DISCONTINUED BY MANUFACTURER, SHEET DETECTOR DOUBLE, AMPLIFIER WITH EXTERNAL SHEET THICKNESS ADJUST AMPLIFIER, LED- INDICATORS AND RELAY OUTPUT. ) Expired - Lifetime Application number EP01204191A Other languages German (de. check the sensor heights. 2. 05 to 4mm, optional two channel version, PROFIBUS and PROFINET Interface available. A double feed produces an output to stop the machine or signal the operator. Double sheet sensor UDC-18GM-400-3E2. Kit Contains O-Ring, Check (x2), O-Ring, Poppet Bolt (x12), Seal Ring (x2), and Bypass Rubber Repair Kit. As a result of the evaluation, corresponding. 4mm long a 360 degree arc would be 2Pi x 25. Ultrasonic technology ensures that the detection is independent of the sheet material (fine paper, transparent rolls, cardboard and metallic film, for example). 5 lbs.