InteliSENS® SLR-MID Series

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InteliSENS® SLR-MID Series

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Speed & Length Measurement

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Proton Products InteliSENS® SLR-MID Series non-contact, bidirectional speed and length gauges provide extremely accurate speed and length measurements in almost any production environment and are MID-certified (certificate number: UK/0126/0120) for final shipping length measurement for products destined for EU-markets (EU Directives 2014/32/EU 2004/22/EC).

Automatic direction detection and measurement down to zero speed means that the InteliSENS® SLR gauge length measurement counts both up and down, so final length measurements will still be accurate to 0.05% even with production lines that exhibit stoppage, direction reversal and creepage.

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Features

  • Non-contact, high-speed, solid-state laser speed and length measurement with no slippage, drift or mechanical wear and greatly reduced maintenance compared with contact wheel / roller systems.
  • Bidirectional speed and length measurement; accurately measures speed and length during line stoppage, reversal and creepage.
  • EU MID Class 1 accuracy compliant (0.125%).
  • EU MID-certified (certificate number: UK/0126/0120) for final shipping length measurement for products destined for EU-markets (EU Directives 2014/32/EU 2004/22/EC).
  • EU MID compliant 90-day data logging capability.
  • Fitted with PROFIBUS industrial communications bus as standard.
  • AiG2-MID interface display unit included as standard.
  • Optional external printer available for batch length ticket printing.

Introduction

Proton Products InteliSENS® SLR-MID Series non-contact, bidirectional speed and length gauges provide extremely accurate speed and length measurements in almost any production environment and are MID-certified (certificate number: UK/0126/0120) for final shipping length measurement for products destined for EU-markets (EU Directives 2014/32/EU 2004/22/EC).

Automatic direction detection and measurement down to zero speed means that the InteliSENS® SLR gauge length measurement counts both up and down, so final length measurements will still be accurate to 0.05% even with production lines that exhibit stoppage, direction reversal and creepage.

Production processes for wire, cable, web products, woven and non-woven materials, paper, plastic film, tapes, building materials, floorings and labelling can all be measured using the laser Doppler method.

Applications requiring a precise cut-to-length process benefit from the non-slip and highly accurate laser measurement technique which reduces scrap, increases uptime and improves material yield by eliminating product “Give Away” or “Short Length” claims.

InteliSENS® SLR-MID Series gauges are money-saving, direct replacements for traditional problematic and high-maintenance contact wheel and roller-type devices and are extremely easy to install and operate. Integration with production line controllers such as PLCs is eased by the availability of a wide variety of industry standard communications interfaces.

The InteliSENS® SLR-MID Series is fully-certified to Class 1 accuracy (0.125%) for final shipping length measurement on bidirectional lines for products destined for EU-markets (EU Directives 2014/32/EU 2004/22/EC).

Operating principle – Laser surface velocimeter

Proton Products InteliSENS® series speed and length gauges illuminate the measured surface with a precisely pitched interference pattern created by the intersection of two laser beams. The alternating bright and dark interference fringes modulate the light scattered by the object with a frequency proportional to the object speed. This scattered light is detected by a photodiode and the electrical signal digitally processed to determine the frequency and hence the speed. Object length is then calculated by integrating the speed measurement over time.

The InteliSENS® SLR-MID Series bidirectional speed and length gauges extend this principle by using a high-frequency Bragg cell modulator to illuminate the measured surface with a scanning interference pattern, which generates an oscillating light signal even when the object is stationary. Direction of motion is determined by whether the scattered light frequency is higher or lower than the stationary frequency.

Operating Principle

Specifications

Model SLR3060-MID Units
Stand-off distance 300 mm
Depth-of-field 60 mm
Maximum speed (bidirectional) 5000 m/min
Minimum single length measurement 0.4 m
Scale interval 0.1 mm
Accuracy class 1
Specification Minimum Typical Maximum Units
Accuracy 0.125 %
Acceleration 500 m/s2
Internal measurement rate 100 kHz
Measurement output interval 40 µs
Laser spot size 3 mm
Operating temperature 5 45 °C
Environmental protection IP67
Weight 3 kg
Length 230 mm
Width 130 mm
Height 75 mm
Power supply 15 24 25 VDC
Power consumption 20 W
Measurement units Speed metres / minute
Length metres
Laser safety control inputs Laser An external closed SPST contact enables the laser diode.
Shutter An external closed SPST contact opens the laser shutter.
2×Logic inputs Electrical Maximum input voltage: +24Vdc
Function Direction Length reset End of reel (trigger printout)
3×Relay outputs Electrical Isolated, floating relay contacts
Maximum voltage: 50Vdc Maximum current: 0.5A
Function Gauge Fault Preset Length 1 Preset Length 2
2×Pulse outputs Electrical Opto-isolated differential pairs
Output voltage: 5V or user supplied (up to 24V)
Maximum frequency: 250kHz
Function Quadrature (1000 pulses/m) Index (1 pulse/m)
CANbus communications Connects to a Proton Products AiG2-MID interface display unit
Serial communications RS-232 Printer port
Industrial bus communications PROFIBUS
Options External printer for batch length ticket printing.

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