•  Accurate to ±0.005”[0.127mm] with linearity of ±0.024” [0.6096mm] @ 2 sigma

•  PID or Time Proportional Control

•  Patented Scanned LED Technology

•  Solid-state Reliability

•  Dust, Mist, and Vibration Tolerant

•  Easy to Install, Simple to Maintain

•  Smart Sensor FAULT Detection Circuitry

•  Clear or Translucent Material Position Control Available

•  Several Analog Output Options Available

•  First Edge Detection Available

Overview

As part of a global economy, modern manufacturers experience a wide range of quality requirements for coiled products that must be processed to exacting standards. Improperly wrapped coils, poor product shape, neck-down, and edge damage can all slow the production process and consume narrow profit margins through excessive waste. Because of the unreliability of many earlier edge guide systems, some manufacturers have left entry guiding to manual operator control. The coarse adjustment to position produced by these manual corrections are reflected at the delivery end of the process.

The SCAN-A-LINE™ Strip Entry Control System (SEC System) should be one of the most important process control components on a coiled product line. It provides highly accurate material detection with an extremely quick response time for improved position control.

Description

The SEC System supplies complete signal processing for up to two SCAN-A-LINE™ 10XAS-Series sensors. A smart sensor FAULT detector circuit monitors sensor signals for valid edge detection information. Defective scans due to strobe light or falling debris interference are rejected.

Strip Entry Control System Components

• PID Control Processing Unit Level Two or Level Three

• TPC Control Processing Unit Level Two or Level Three

• SCAN-A-LINE™ Sensors: Model 10XAS-Series Auto-Sync Sensors

• Up to 20 feet [6.1m] of cabling between the sensors and the processing unit

Strip Entry Control Processing Unit Features

Bargraph Display (All Models)

All control processing units come standard with a Bargraph Display to visually represent the difference between a predetermined material position and the detected material position. Also included are annunciators and limit relays.

Analog Output Devices - DA3 Module or DA4 Module

Level 2 single-sensor analog output device (DA3 Module) provides fault-interrupted deviation (bipolar) analog output update with relay output for use in a single-sensor centerline guiding application. Absolute (unipolar) analog width output is also available.

Level 3 dual-sensor analog output device (DA4 Module) includes three real-time analog outputs and three reference analog outputs. Required for Auto-Zero and LCR Option (Left, Center, Right Selector).

Option for Strip Entry Control Processing Units

• Auto-Zero Push Button - (AZ Option) provides the selection of any material position as a reference position

• Control Offset Multi-Dial - (OP Option) allows operator to introduce a finely-tuned offset to the control signal for final material positioning

• Left/Center/Right - (LCR Option) provides a means of selecting the desired guide point for automatic control.

• Line Driver/Receiver - (LDR Option) connects a control processing unit to another processing unit.  This is necessary when the sensors for the system must be located more than fifty linear cable feet [15m] from the processing unit.

• 4/20mA Current Loop - (4/20 Option) provides an isolated, long distance routing of analog signals from the control processing unit to a PLC or another input device.

• Remote Bargraph Display - (BGA/50 Option) allows mounting of the bargraph display (normally located on the front door of the processing unit) up to fifty linear feet [15m] away from the processing unit.

• First Edge Video Pre-Processor - (FEV Option) detects the first edge viewed a the first edge of the material and ignoring all other edges.

10XAS-Series Dual-Sensor System includes two emitters, two receivers and up to twenty feet [6.1m] of interconnection cabling. A dual-sensor system can accommodate materials measuring between six inches and up to an almost infinite maximum size (Note: if guiding materials both narrow and wide, overall maximum material width may be limited.) Dual-sensor systems require the use of the Model DCPU, Model PCPU Level 3 or Model TCPU Level 3 for conversion of the digital sensor signals into analog control signal for interfacing with process line controls.

Options for Strip Entry Control Sensors

Contact your manufacturers representative or fill out the SCAN-A-LINE™ Information Request Form for quotation or our latest brochures.

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INTERMEDIATE STEERING CONTROL SYSTEM

Features

• Accurate to ±0.005”[0.127mm] with linearity of ±0.024” [0.6096mm] @ 2 sigma

•  PID or Time Proportional Control

•  Patented Scanned LED Technology

•  Solid-state Reliability

•  Dust, Mist, and Vibration Tolerant

•  Easy to Install, Simple to Maintain

•  Smart Sensor FAULT Detection Circuitry

•  Clear or Translucent Material Position Control Available

•  Several Analog Output Options Available

•  First Edge Detection Available

Many industrial strip and web processing lines require either centerline or edge position adjustments prior to critical operations (such as strip slitter, accumulator entry, etc.). These adjustments are generally referred to as intermediate steering operations. Intermediate steering sometimes presents unusual challenges for a strip guiding system.

Typically, strip position sensors consist of capacitive sensors, light-bar position sensing devices, or line scan camera devices. Unfortunately, these devices may drift with air temperature and humidity changes, become contaminated by coatings, lubricants and foreign material build-up. Smoke, dirt, and mist may introduce guiding errors, and they may require very careful fixturing and properly adjusted lighting to meet their specifications.

Unfortunately, these other devices can be more of a problem than a solution. With a SCAN-A-LINE™ Intermediate Steering Control System (ISC System) the savings in maintenance costs alone can pay for the replacement of unreliable steering systems.

Description

The ISC System supplies complete signal processing for up to two SCAN-A-LINE™ 10XAS-Series sensors. A smart sensor FAULT detector circuit monitors sensor signals for valid edge detection information. Defective scans due to strobe light or falling debris interference are rejected.

Intermediate Steering Control System Components

• PID Control Processing Unit Level Two or Level Three

• TPC Control Processing Unit Level Two or Level Three

• SCAN-A-LINE™ Sensors: Model 10XAS-Series Auto-Sync Sensors

• Up to 20 feet [6.1m] of cabling between the sensors and the processing unit

Intermediate Steering Control Processing Unit Features

Bargraph Display (All Models)

All control processing units come standard with a Bargraph Display to visually represent the difference between a predetermined material position and the detected material position. Also included are annunciators and limit relays.

Analog Output Devices - DA3 Module or DA4 Module

Level 2 single-sensor analog output device (DA3 Module) provides fault-interrupted deviation (bipolar) analog output update with relay output for use in a single-sensor centerline guiding application. Absolute (unipolar) analog width output is also available.

Level 3 dual-sensor analog output device (DA4 Module) includes three real-time analog outputs and three reference analog outputs. Required for Auto-Zero and LCR Option (Left, Center, Right Selector).

Option for Intermediate Steering Control Processing Units

• Auto-Zero Push Button - (AZ Option) provides the selection of any material position as a reference position

• Control Offset Multi-Dial - (OP Option) allows operator to introduce a finely-tuned offset to the control signal for final material positioning

• Left/Center/Right - (LCR Option) provides a means of selecting the desired guide point for automatic control.

• Line Driver/Receiver - (LDR Option) connects a control processing unit to another processing unit.  This is necessary when the sensors for the system must be located more than fifty linear cable feet [15m] from the processing unit.

• 4/20mA Current Loop - (4/20 Option) provides an isolated, long distance routing of analog signals from the control processing unit to a PLC or another input device.

• Remote Bargraph Display - (BGA/50 Option) allows mounting of the bargraph display (normally located on the front door of the processing unit) up to fifty linear feet [15m] away from the processing unit.

• First Edge Video Pre-Processor - (FEV Option) detects the first edge viewed a the first edge of the material and ignoring all other edges.

SCAN-A-LINE™ 10XAS-Series Sensors Features

• High-speed edge position tracking for proportional position control

• Precise 2000 inch [508cm] per second scan velocity

• Position information is a function of time rather than light intensity

• Quartz Crystal controlled won't drift out of adjustment

• Smoke, steam, dust and dirt have no effect on edge detection

• Nothing to burn out and NO MOVING PARTS mean virtually no maintenance worries

• LED's rated at 275-year mean-time-between-failure (MTBF) and carry a lifetime guarantee

• Corrosive resistant finishes available

SCAN-A-LINE™ 10XAS-Series Auto-Sync sensors allow for the greatest position size variation in material guiding. They may be configured as a single-sensor or dual-sensor system, depending upon the size of the material to be guided, without any special hardware. 10XAS-Series sensors come in ten inch [25.4cm] increment lengths ranging from ten inches [25.4cm] up to forty inches [101.6cm].

10XAS-Series Single-Sensor System includes one emitter, one receiver, and up to twenty feet [6.1m] of interconnection cabling. A single-sensor system can accommodate materials measuring between one-half inch [12.7mm] and fifty-eight inches [1473.2mm]using standard duty enclosures and thirty-eight inches [965.2mm] using Ultra-Tough™ enclosures.. Single-sensor systems require the use of the Model DCPU, Model PCPU Level 2 or Model TCPU Level 2 for conversion of the digital sensor signal into analog control signal for interfacing with process line controls.

10XAS-Series Dual-Sensor System includes two emitters, two receivers and up to twenty feet [6.1m] of interconnection cabling. A dual-sensor system can accommodate materials measuring between six inches and up to an almost infinite maximum size (Note: if guiding materials both narrow and wide, overall maximum material width may be limited.) Dual-sensor systems require the use of the Model DCPU, Model PCPU Level 3 or Model TCPU Level 3 for conversion of the digital sensor signals into analog control signal for interfacing with process line controls.

Options for Strip Entry Control Sensors

• Infrared LED - (IR Option) designed for operation in extremely hazy conditions that attenuate material detection. (Also available in visible light intolerant materials
• Ultra-Tough™ enclosures - (UT Option) for applications where physical abuse and damage cannot be avoided.
• On-line Balance - (OLB Option) allows sensors to be balanced on-line for peak performance.
• Clear Material - (CLR Option) for detection of clear, translucent or loosely woven products. (Requires OLB Option)
• End Alignment - (EA Configuration Option) for applications where the product thickness varies.

Contact your manufacturers representative or fill out the SCAN-A-LINE™ Information Request Form for quotation or our latest brochures.

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EDGE GUIDE CONTROL SYSTEM

Features

• 10XAS-Series Sensors Accurate to ±0.005" [0.127mm] with linearity of 0.024" [0.6096mm] @ 2 Sigma

• EG30-Series Sensors: Repeatability of 0.02" [0.51mm]

• PID or Time Proportional Control

• Patented Scanned LED Technology

• Solid-state Reliability

• No Moving Parts

• Dust, Mist, and Vibration Resistant

• Easy to Install, Simple to Maintain

• Clear or Translucent Material Position Control Available

• Several Analog Output Options Available

• Many Control Options Available

Modern process lines rely heavily on edge guide control systems to maintain proper strip position. From simple edge guiding to complex slitting operations, edge guide systems are critical to high quality process line control.

Most optical edge guide sensors rely upon the blockage of light with a corresponding reduction of video amplitude or surface reflection of light to locate a product edge. In theory, these systems may provide adequate edge guide control, but in the reality they fall far short of the needs of today's high capacity process lines. Lamps burn out. Smoke, dust and dirt drastically reduce the sensors' effectiveness. Clear or translucent materials are almost impossible to guide. Improper positioning of the material on the line can lead to improperly identified product, damage to the product, or unsuitable edge trimming.

The SCAN-A-LINE™ Edge Guide Control System (EGC System) alleviates the problems associated with improper strip positioning and are a key element in automating edge guide control. The EGC System is tough enough for edge guiding on steel trimmer lines and sensitive enough for blown film applications. The savings in improved quality and reduced maintenance costs will improve overall line efficiency and profit margins.

Edge Guide Control System Components

• SCAN-A-LINE™ Edge Guide Sensors - Model EG30-Series or Model 10XAS-Series Sensors

• PID Control Processing Unit - Model PCPU Level 1 used with (EG30-Series) Sensors or Level 3 with (10XAS-Series) Sensors

• TPC Control Processing Unit - Model TCPU Level 1 used with (EG30-Series) Sensors or Level 3 with (10XAS-Series) Sensors

• Up to 50 feet [15.2m] of cabling between the sensors and the processing unit.

Edge Guide Control Processing Unit Features

Bargraph Display (All Models)

All control processing units come standard with a Bargraph Display to visually represent the difference between a predetermined material position and the detected material position. Also included are annunciators and limit relays.

Analog Output Devices - DA4 Module

Level 3 dual-sensor analog output device (DA4 Module) includes three real-time analog outputs and three reference analog outputs. Provides absolute analog output of edge position as well as zero reference absolute analog output. Required for Auto-Zero Push-button Option and FEV (First Edge Video) Option. Requires 10XAS-Series sensors.

Option for Edge Guide Control Processing Units

• Auto-Zero Push Button - (AZ Option) provides the selection of any material position as a reference position

• Control Offset Multi-Dial - (OP Option) allows operator to introduce a finely-tuned offset to the control signal for final material positioning

• Left/Center/Right - (LCR Option) provides a means of selecting the desired guide point for automatic control.

• Line Driver/Receiver - (LDR Option) connects a control processing unit to another processing unit.  This is necessary when the sensors for the system must be located more than fifty linear cable feet [15m] from the processing unit.

• 4/20mA Current Loop - (4/20 Option) provides an isolated, long distance routing of analog signals from the control processing unit to a PLC or another input device.

• Remote Bargraph Display - (BGA/50 Option) allows mounting of the bargraph display (normally located on the front door of the processing unit) or up to fifty linear feet [15m] away from the processing unit.

• First Edge Video Pre-Processor - (FEV Option) detects the first edge viewed a the first edge of the material and ignoring all other edges

SCAN-A-LINE™ EG30-Series sensors are the low cost solution for edge guiding. They provide a detection range of 2.8 inches [71.1mm] for systems where edge position does not vary greatly.

The Model EG-30A-Series and Model EG-30A-UT sensors have self-contained analog output circuits that produce a 0VDC to 10VDC (5VDC with emitter half covered) position analog signal for interfacing with either the PID or TPC Modules for control of the strip position.

SCAN-A-LINE™ 10XAS-Series Auto-Sync sensors allow for the greatest position variation in material guiding. 10XAS-Series sensors come in ten inch [25.4cm] increment lengths ranging from ten inches [25.4cm] up to forty inches [101.6cm]. All 10XAS-Series sensors require an analog output device in the processing unit (DA4 Module) to convert the digital sensor signals to analog for processing by the PID or TPC Modules.

SCAN-A-LINE™  EG-Series or 10XAS-Series Sensor Features

• High-speed edge position tracking for proportional position control

• Precise 2000 inch [508cm] per second scan velocity

• Position information is a function of time rather than light intensity

• Quartz Crystal controlled won't drift out of adjustment

• Smoke, steam, dust and dirt have no effect on edge detection

• Nothing to burn out and NO MOVING PARTS mean virtually no maintenance worries

• LED's rated at 275-year mean-time-between-failure (MTBF) and carry a lifetime guarantee

• Corrosive resistant finish

Options for Edge Guide Control System Sensors

• Infrared LED - (IR Option) designed for operation in extremely hazy conditions that attenuate material detection. (Also available in visible light intolerant materials
• Ultra-Tough™ enclosures - (UT Option) for applications where physical abuse and damage cannot be avoided.
• On-line Balance - (OLB Option) allows sensors to be balanced on-line for peak performance. Available only with 10XAS-Series sensors.
• Clear Material - (CLR Option) for detection of clear, translucent or loosely woven products. (Requires OLB Option) Available only with 10XAS-Series sensors.

Contact your manufacturers representative or fill out the SCAN-A-LINE™ Information Request Form for quotation or our latest brochures.

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REWIND STRIP CONTROL SYSTEM

Features

•  Accurate to ±0.005”[0.127mm] with linearity of ±0.024” [0.6096mm] @ 2 sigma

•  PID or Time Proportional Control

•  Patented Scanned LED Technology

•  Solid-state Reliability

•  Dust, Mist, and Vibration Tolerant

•  Easy to Install, Simple to Maintain

•  Smart Sensor FAULT Detection Circuitry

•  Clear or Translucent Material Position Control Available

•  Several Analog Output Options Available

•  First Edge Detection Available

Overview

The precision and quality required of modern automated processing lines have put a tremendous strain on the classic rewind control system. Process speeds are continuously increasing, while the costs of downtime and maintenance time are often measured in terms of many thousands of dollars per minute.

Control of the rewind operation poses several problems for modern strip processing lines which classic light source and photo detector control systems cannot address adequately. When a typical rewind control system is used, especially in edge guiding, variations in strip width can produce an uneven coil during rewinding. Although the guided edge will produce an evenly wound coil on the sensor side of the strip, any variation in strip width results in a unevenly wound edge on the opposite side of the coil.

The SCAN-A-LINE™ Rewind Strip Control System (RSC System) completely alleviates these problems with several unique solutions.

Rewind Strip Control System Configurations

  Edge Guide RSC System

Utilizing a single 10XAS-Series sensor and a Model DCPU, the CO-LINEAR™ RSC System monitors the edge position of the strip, no matter what the variation in strip width. The digital position signals generated in the system sensors are fed to the processing unit where they are converted to an analog edge position signal. A linear transducer located on the mandrel provides a continuous mandrel position signal. Both of these signals are fed to the CO-LINEAR™ amplifier (AD/DA Module) where they are scaled and continuously processed to provide a deviation position signal for the control valve. This analog signal is used to control the direction and distance of travel of the rewind mandrel. The mandrel will be driven in the proper direction until the error signal reads zero volts and the mandrel is again aligned with the edge of the strip. As a result, strip width variation is apportioned to only one edge of the coil, producing a wound coil with one straight edge.

  Centerline RSC System

The CO-CENTRIC™ RSC System (single or dual 10XAS-Series sensors and the Model DCPU) continuously monitors the centerline of the strip, no matter what the variation in strip width. The digital position signals generated in the system sensors are fed to the processing unit where they are converted to an analog centering signal. A linear transducer located on the mandrel provides a continuous centerline position signal. Both of these signals are fed to the CO-CENTRIC™ amplifier (AD/DA Module) where they are scaled and continuously processed to provide a deviation position signal for the control valve (PID). This analog signal is used to control the direction and distance of travel of the rewind mandrel. The mandrel will be driven in the proper direction until the error signal reads zero volts and the mandrel is again aligned with the centerline of the strip. As a result, strip width variation is apportioned evenly between both edges of the coil, producing an evenly wound coil.

Rewind Strip Control System Components

• Digital Control Processing Unit

• Single or Dual 10XAS-Series Auto-Sync Sensors

• Up to 20 feet [6.1m] of cabling between the sensors and the processing unit

Interfaces with most pneumatic or hydraulic proportional control valves or servo-valves in closed loop process control lines. The PID Control Amplifier (PID Module) in the Model DCPU provides a fully tunable deviation (bipolar) control signal.

Interfaces with most pneumatic or hydraulic proportional control valves or servo-valves in closed loop process control lines. The PID Control Amplifier (PID Module) in the Model PCPU provides a fully tunable deviation (bipolar) control signal. The Model PCPU Level 2 is designed for single-sensor systems while the Level 3 is designed for dual-sensor systems.

10XAS-Series Dual-Sensor System includes two emitters, two receivers and up to twenty feet [6.1m] of interconnection cabling. A dual-sensor system can accommodate materials measuring between six inches and up to an almost infinite maximum size (Note: if guiding materials both narrow and wide, overall maximum material width may be limited.) Dual-sensor systems require the use of the Model DCPU, Model PCPU Level 3 for conversion of the digital sensor signals into analog control signal for interfacing with process line controls.

Options for Strip Entry Control Sensors

Contact your manufacturers representative or fill out the SCAN-A-LINE™ Information Request Form for quotation or our latest brochures.

Harris Instrument is proud to introduce our new Electric Actuator Controller System, EACS-1. Eliminate potential compound contamination from high maintenance hydraulic control and guiding systems. The new EACS-1 will supply up to 1000 pounds of clean, maintenance free thrust, to replace most hydraulic guide systems in tire and rubber applications. The EACS-1 interfaces with the Scan-A-Line EG30 Edge Guide Sensors, or any of the 10XAS-Series sensors to provide an error signal for Edge or Center Guide application. The complete system includes a Scan-A-Line Sensor, a proportional control Pulse Width Modulation Amplifier and a 24 Volt DC Motor Linear Actuator.

The system is designed to provide an interface between most Scan-A-Line sensor and a Brush Motor driven linear actuator. It employs a microprocessor design to drive a power HEXFET H-Bridge to supply 24 Volt output up to 8 Amps with pulse width modulated duty cycles from 0 to 99 % - providing true proportional control of the actuator speed. The speed with which the system responds to a small error can be adjusted with an internal gain adjustment control. A Target Offset control permits operator changes to the target position. The controller also features Auto/Manual control Jog switches – all available remotely. The controller uses a standard NEMA enclosure. The EACS-1 operates from standard 117 VAC 50 to 60 Hz power at 2 Amps. (220VAC optional).

Actuators are available with strokes of 4-inch, 8-inch, or 12-inch to meet varied control requirements. Thrusts may be selected for 500, 1000, or 1500 pounds, rated at 25% duty at full operating speed and load. A built in anti-back driving brake holds the actuator position against movement when power is not applied to the motor. A ball bearing drive screw system ensures trouble free operation in the most demanding environments. Drive velocities depend on the thrust and load ratings selected, but range from 2.4 inches per second at a 500-pound load to 0.6 inches per second at 1000 pounds. In many applications these actuators will require little or no maintenance.

Harris Instrument has over 20 years experience in supplying a wide variety of non-contact guide and measurement sensors. We can provide reliable precision measurement and position control in the most demanding industrial environments. Our scanned LED technology can measure edge position, independent of product density, background light levels or normal dirt buildup. By relying on our quartz crystal time base for a precision scan velocity, we become independent of many of the factors that make other sensors fail in the same situations.

Many web applications require both measurement and guide control. Web width is a common requirement in coating operations as well as extrusion lines in the tire and belting industry. Customers with existing Scan-A-Line Width sensors can add the EACS-1 for outstanding position control. Without disturbing the measurement process. Other position sensors can be replaced with Scan-A-Line sensors to provide both position control and 100% width inspection for SPC requirements. The EACS-1 is also used in the roofing industry for rugged trouble-free web guiding.

Contact your manufacturers representative or fill out the SCAN-A-LINE™ Information Request Form for quotation or our latest brochures.

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Many industries, such as plating and tinning, hot dip metals, rubber, plastics, textiles and non-wovens, require a continuous input of material for proper and efficient operation.

In many of these operations, an accumulator pit is used to allow temporary storage of extra material. It is important to know when the pit is nearly full so the line speed can be adjusted to prevent an overflow.

Most accumulator control systems rely on a combination of incandescent lamps and photo detectors to report that the accumulator pit is filled. Although the accuracy of these systems may be adequate, reliability is often deficient for the demands of modern production schedules. A lamp failure may cause the pit to overfill, spilling material onto the floor of the accumulator pit. The harm to the strip and possible damage to precision rollers from foreign material contamination increases downtime and reduces overall productivity.

The SCAN-A-LINE™ method of position sensing using Light Emitting Diode (LED) scanning technology overcomes the problems associated with older accumulator loop control sensors. The LEDs in SCAN-A-LINE’s™ patented sensor technology specify a 275-year mean-time-between-failure (MTBF). The light sources should never need replacing if the sensor is properly protected. Our exclusive fail-safe detection circuitry will prevent catastrophic system failure by immediately alerting the operator of a system malfunction.

• SCAN-A-LINE™ Model 10XAHD-40 inch [1.02 meter] Emitter
• Model 10XLR Long-Range Infrared (IR)
• Model LCPU Loop Control Processing Unit

The Accumulator Loop Control System (ALC System) functions in accumulator pits up to 40 feet [12.2 meters] long to provide a 20 inch [50.8 cm] position control range.

Model LCPU Processing Unit Features:

• Power and signal processing for the sensor
• Vertical bargraph display, mounted on the enclosure door, displays the loop position, fail-safe status, and positive or negative excess error limits. (BGAV/50 Option provides remote mounting for easier operator access)
• Fail-safe circuitry monitors sensor scan rate and system power to alert the operator to a system compromise
• Fail-safe system monitor connects to relay outputs with normally-open (NO) and normally-closed (NC) contacts. NO relays also provided for error limits on display

• Two loop position analog outputs easily interface with most line control systems:

  • Unipolar (0VDC to +10VDC) analog output: +5VDC when the emitter is half blocked or +10VDC when it is completely covered

  • Bipolar (-10VDC to +10VDC) analog output signal is –10VDC when the emitter is uncovered and +10VDC when the emitter is completely blocked.

Contact your manufacturers representative or fill out the SCAN-A-LINE™ Information Request Form for quotation or our latest brochures.

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