SL

Non-contact unidirectional speed/length measurement

Scantron has over three decades of non-contact surface measurement experience. This SL Series gauge is one of most popular speed and length measurement solutions.

The SL Series of non-contact, unidirectional speed and length gauges provide extremely accurate speed and length measurements in almost any production environment.

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.

SL 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.

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SL	Units	SL1525	SL3060	SL6060	SL120120
Minimum speed	(m/min)	0.1	0.2	0.2	0.4
Maximum speed	(m/min)	2500	5000	5000	10000
Stand-off distance	(mm)	150	300	600	1200
Depth of field	(mm)	25	60	60	120

For all Gauge Models above:

SL
Accuracy	Maximum 0.05%
Repeatability	Maximum 0.02%
Acceleration	>500ms2
Measurement update rate	40µs (0.04ms) [1 measurement = 1 scan]
Power requirement	15 -25 Vdc, 20 Watts
Protection rating	IP67
Temperature range	5°C ~ 40°C
Gauge dimensions	L x W x H 230 x 130 x 75mm
Gauge weight	3kg
Laser spot size	4mm diameter
Units of speed	m/min, ft/min
Units of length	m, ft, yd
5x digital inputs	2 fixed: Laser enable, Optical shutter enable
	3 Programmable: Reverse direction, Length hold, Display hold, Speed hold,
	Reset (length or reel number), End of reel. Max input 24Vdc
3xRelay outputs	Volt-free contact; Max. Voltage 50Vdc 0.5A
	Gauge OK, Gauge measuring, Laser on, Laser at temp, Shutter open
	(Status idicators) Preset length1, Preset length 2
Serial I/O	Selectable RS232, RS485, RS422: Speed, length, GR, (status indicators). Bluetooth
CANBUS	Connects to Proton products range of SiDI AiG2 & AiG3 indicators.
	Can be used to supply power to gauge head.
Optional communications (factory-installed, choice of one)	Profibus, Ethernet/IP, DeviceNET,
Optional wireless communications (factory-installed, choice of one)	WiFI, Bluetooth

Non-contact, high-speed, solid-state laser speed and length measurement with no slippage, drift, mechanical wear or 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 communications interfaces for easy integration with PLCs and production line equipment
Excellent value with low cost of ownership

The SL is a very versatile piece of equipment and is suitable for a wide range of applications where unidirectional speed and length measurement, to high degrees of accuracy, is required.

Here’s a short list of some of the industries where our customers have benefited from our non-contact laser measurement systems:

Flooring and carpet
Abrasive paper
Roof foil
Adhesive tape
Cold metal
Paper
Packaging material
Construction & insulation material
Special extrusion and calendaring
Ceramics
Cord, lead
Stranded products
Insulated products

The following are some of the applications covered:


	AiG2-SL - Display module Connects via the CAN-bus port Displays measured speed and length Provides menu-based setting of all parameters Bright vacuum fluorescent dot matrix display Mounts directly on the gauge body or remotely via an extension cable
	CAN-bus cable - For connecting the gauge to an AiG2 interface display unit Available in 5, 10, 15, 20, 30 and 50m lengths
	PSU-BOB-SL - Power supply, break-out box and laser safety key switch Connects via the DB25 “INTERFACE” connector Supplies 24VDC electrical power to the gauge Provides screw terminal access to all “INTERFACE” connector input and output pins End user cables are sealed with three cable glands Provides a laser enable key switch for compliance with laser safety requirements Input voltage range: 90 – 260 VAC @ 45 – 65Hz
	DB25 Cable - For connecting the gauge "INTERFACE" port to a PSU-BOB-SL, Terminal Strip-DIN or CS1G-SL Available in 3, 5, 10, 20 and 30m lengths
	RJ45 to DB9 converter For connecting RJ45 8P8C terminated cables to the DB9 EtherNet/IP port
	PCIS_SL - PC Interface Software PC-based software package User-friendly graphical user interface Displays all measurements Provides menu-based setting of all parameters Provides trending, data logging, pre-sets and alarms Gauge to PC connection via RS-232 or optional RS-232-to-USB interface cable (RSCon)
	SL Laser Gaurd PHA1 - LAser safety enclosure for PHA-1 (with or without side skirts) Mounts to a PHA-1 to prevent accidentla viewing of direct and reflected laser beams Integrated interlock switch engages the gauge laser shutter whenever the guard cover is opened Side skirts contain reflected laser radiation from highly-reflective objects
	Air wipe SLMKII Provides a constant flow of clean air over the laser window to disperse dust, debris or steam Easily detached by a quick release screw for cleaning Provides an 8mm push fit tube fitting to connect to a clean air source