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Speed & Length Measurement

InteliSENS™ SLM Series

InteliSENS™ SLM6060, SLM120120 - front view
InteliSENS™ SLM Series - rear view
InteliSENS™ SLM Series - connector panel view
InteliSENS™ SLM200200 - front view

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.
  • Unidirectional speed and length measurement.
  • UKAS-traceable calibration; accuracy better than 0.05% and repeatability better than 0.02%.
  • Rugged industrial design for use in harsh factory environments.
  • Available fitted with industry-standard communcations interfaces for easy integration with PLCs and production line equipment.
  • Excellent value with low cost of ownership.
  • Harsh environment enclosures are available from Proton Products on request.

Introduction

Proton Products InteliSENSTM SLM Series non-contact, unidirectional speed and length gauges provide extremely accurate speed and length measurements for metals industry applications. They are available with extended stand-off distances and greater depth-of-fields than the standard InteliSENSTM SL Series gauges, which allows them to be used to measure very high temperature objects such as in hot-rolling processes.

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.

InteliSENSTM SLM 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.

Operating principle

Proton Products InteliSENSTM SLM series speed and length gauges illuminate the measured surface with an 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.

Specifications

Model
SLM6060
SLM120120
SLM200200
Units
Stand-off distance*60012002000mm
23.647.278.7inch
Depth-of-field60120200mm
2.364.727.87inch
Minimum speed0.20.40.8m/min
0.61.22.4ft/min
Maximum speed50001000010000m/min
164003280032800ft/min
Weight34.5kg
6.69.9lb
Length230317mm
9.0612.48inch
Width130mm
5.12inch
Height75mm
2.95inch
Other stand-off distances are available on request..

Common Specifications

Specification
Minimum
Typical
Maximum
Units
Accuracy*0.05%
Repeatability0.02%
Acceleration500m/s2
Measurement interval40µs
Laser spot size3mm
Operating temperature545°C
41113°F
Environmental protectionIP67
Power supply152425VDC
Power consumption20W
Other stand-off distances are available on request..
Measurement units (end-user configurable)Speedmetres/minutefeet/minute
Lengthmetresfeetyards
Laser safety control inputsLaserExternal closed contact enables laser diode.
ShutterExternal closed contact opens laser shutter.
2×Logic inputs (end-user configurable)ElectricalMaximum input voltage: +24Vdc
FunctionLength resetDisplay holdLength hold
Speed holdDirectionPause
3×Relay outputs (end-user configurable)ElectricalIsolated, floating relay contacts
Maximum voltage: 50VdcMaximum current: 0.5A
FunctionGauge OKLaser at tempShutter openLaser on
MeasuringPreset Length 1Preset Length 2
3×Pulse outputs (end-user configurable)ElectricalOpto-isolated differential pairs
Output voltage: 5V or user supplied (up to 24V)
Maximum frequency: 250kHz
FunctionQuadratureIndex
Analogue output (end-user configurable)ElectricalOutput voltage: 0 to +10V (end-user scalable)
FunctionSpeedGood readings
CANbus communicationsConnects to an optional Proton Products AiG2 interface display unit
Serial communicationsRS-232RS-422 / 485
Optional communications (factory-installed, choice of one)PROFIBUSEthernet/IPDeviceNET
Optional wireless communications (factory-installed, choice of one)WiFiBluetooth

Accessories

Proton Products offers the M Series range of harsh environment enclosures and accessories for SLM and SLRM Speed and Length gauges deployed in high temperature, dusty, steamy or smoky environments.

X-BOX

Double-wall, stainless steel harsh environment protection enclosure

  • Suitable for hot-rolling applications.
  • Protects against high temperatures, light impact, liquid splash, dust, steam and smoke.
  • Provides a unified electrical connector for electrical and communications connections.
  • Provides ports for the gauge air wipe and water cooling.
  • May be fitted with optional
    • thermal insulation baffles (TBA)
    • water cooling plate (TBA)
    • air-driven vortex cooler (00043MC039) for enhanced thermal shielding from hot metal objects.

Proton part number: 00041MC570

BT-100

Power supply and break-out box

  • Connects to the unified electrical connector of the SLX-BOX (00041MC540) via a Cable SLH/X to BT100 (00041CX100).
  • Provides screw terminal access to all “INTERFACE” connector input and output pins.
  • Provides DB9 connectors to access the “CAN”, “RS-232” and “PROFIBUS” ports.
  • End user cables are sealed with four cable glands.
  • Supplies 24VDC electrical power to the gauge.
  • Input voltage range: 90 - 260 VAC @ 45 - 65 Hz.

Proton part number: 00041MC350

Cable SLH/X to BT100
  • Cable for connecting the unified electrical connector of a SLX-BOX (00041MC540) enclosure to a BT-100 (00041MC350) power supply and break-out box.
  • Length: 100 m.

Proton part number: 00041CX100

Air services unit
  • Provides filtered air which is dust, water and oil free.
  • May be used to drive vortex coolers, air amplifiers and air wipes.

Proton part number: 00041MC370