Laser-Encoder Length & Speed Measurement Systems -

Laser Surface Velocimeter – Laser Doppler Measurement Systems

With a typical measurement accuracy of ± 0,05% and equipped with a quadrature output, the µSPEED Laser-Encoder is the perfectly suited gauge to replace tactile speedometers/rotary encoders or to replace length and speed measurement via machine drives. The non-contact µSPEED laser encoder length measurement and speed measurement systems operate contact-free and because of that without slippage, are maintenance-free and permanently calibrated, while being almost material-independent. Light, dark and black, reflecting, matt, structured and rough surfaces are measured with high accuracy and without changing the parameter settings. µSPEED unites the entire measurement technology in a 0,9 kg heavy, red sensor head casing and directly delivers length and speed measurement values via quadrature output or as ASCII String via a serial interface. Industrial bus system and ethernet are available as interface options. The µSPEED laser gauge measures roll lengths and controls cutting processes and machines. Differential length and differential speed can also be measured.

µSPEED Tutorial

Personal Consultancy

Product Types
Technical Data
Accessories
Measurement Principle
Videos
Downloads
Product Types

Product Types of Laser-Encoder Length Measurement Systems and Speed Measurement Systems

µSPEED‐PRO

Bidirectional non-contact laser length measurement system for nearly any application and material movement as well as conveying processes.

Smart sensor with typical measurement accuracy ± 0,05 %
Non-contact direction detection and measurement starting from 0 m/min
Suited for any material handling including start‐/stop processes and such with change of material running direction
Suited for winding, cut-to-length and positioning applications
Available with MID certificate (MID 2014/32/EU) – calibrateable

µSPEED‐SMART

Unidirectional non-contact laser length measurement system for conveying processes with few stops. System is identical to μSPEED-PRO (see above), except for:

Typical measurement accuracy ± 0,05 %
Direction detection via external direction signal
Suited for material handling and processes with low stop rate
Suited for winding and cut-to-length applications with medium to very high material speeds
Available with MID certificate (MID 2014/32/EU) – calibrateable

µSPEED‐SMART-ECO

Unidirectional non-contact laser length measurement system with medium accuracy for conveying processes with few stops.

average measurement accuracy (better ± 0,3 %)
lower pricing segment
direction recognition via external direction signal
for conveying processes with low stopping rate
Suited for winding and cut-to-length applications with medium to very high material speeds

Technical Data

Technical data for the product range of laser-encoder length measurement systems and speed measurement systems

	µSPEED-PRO	µSPEED-SMART	µSPEED-SMART-ECO
Direction Detection	non-contact	via external direction signal	via external direction signal
Measurement starting from V=0	non-contact	optional	No
Material Presence	non-contact	optional	No
Accuracy (typ.) (2σ;L>10m/3σ;L>20m)	± 0,05 %	± 0,05 %	± 0,3 %
Repeatability	± 0,02 % of the measurement value (except SMART-ECO)
Sensor Type	Smart Sensor	Smart Sensor	Smart Sensor
Speed Measurement Range	0 to ± 1.200 m/min 0-20 m/s	1 to ± 6.000 m/min 0,02-100 m/s	1 to ± 6.000 m/min 0,02-100 m/s
Stand-off Distance (Tolerances)	115±5 (±20) mm	120±5 (±20) mm 240±10 (±40) mm	120±5 (±20) mm 240±10 (±40) mm
Interfaces	1 x RS-485 or RS-232 alternatively to I/Os: RS-422, RS-485
I/Os	Quadrature Output 1 to 100.000 (depending on maximum speed) pls/m Input: Start, Gate, Direction, Laser Interlock Output: Status
I/O Type	RS‐422 Gauge Laser Interlock (single, 24V)
Available Data	speed, length, signal quality, status, laser interlock, valid measurement material present (only PRO)
Fieldbus	Profibus, CANopen, DeviceNet, CC‐Link Ethernet‐IP, Profinet‐IO, Modbus‐RTU Bluetooth (All Fieldbus optional)
Class of Protection	Sensor Head: IP67 Controller/MID-COUNTER: Front: IP51; Back: IP20
Dimensions (LxWxH)	Sensor Head: 154x94x39 mm
Weight	Sensor Head: 0,9 kg
Power Supply	24 VDC (18 V to 30 V)
Operating Unit	optional
Laser Data	25 mW, 780 nm (Laser Class 3B)
Ambient Temperature/Humidity	5 to 55°C ‐ not condensing beyond temperature range – external cooling / heating required

Accessories
Accessories for laser encoder-length measurement systems and speed measurement systems

Standard Interface

Terminal-Box

µSPEED-T-BOX

The μSPEED-T-Box terminal unit enables easy and safe connection and supply of the μSPEED-SMART, μSPEED-SMART-ECO and μSPEED-PRO sensors. The top-hat rail module is intended for installation in a control cabinet

Sensor Cable

Shielded Cables
µSPEED-C10, C25, C50

Sensor cables for connecting the µSPEED sensors with the µSPEED-T-Box in lengths between 10 and 50 m (greater lengths only on demand)

Display and Control Units

Length Counter, Speed Display µSPEED-CNT-M, µSPEED-TACHO-M	Counter with two-line multi-function display with touchscreen for parallel display of speed and length. Reset function.
Control Unit µSPEED-CONTROLLER	Display and control unit for the μSPEED sensors among other things provide the following functionality: Display of all measurement values </ li> Display of sensor status </ li> Input of preselection lengths </ li> Reset of current length </ li> Cut contact, pre-contact output </ li> Sensor Parameterization </ li>
MID-Counter (calibrated) µSPEED-MID-COUNTER	Counter with calibration license, which can be used for length measurement in conjunction with the optical laser sensors μSPEED-SMART and μSPEED-PRO or alternatively with a rotary pulse generator. Click here for more infos!
Display Unit for Length and Speed µSPEED-CNT/TACHO	μSPEED-CNT/TACHO includes a length counter, a speed indicator, and a laser on/off key switch. The display unit is designed as an add-on unit for stand-alone operation of µSPEED seonsors. Data can be output to a PC via an RS-232 interface
Serial Large Display µSPEED-DIS	μSPEED-DIS is used to read μSPEED measurement values from a distance. The large display is equipped with 6 digits as standard, but can optionally be set up as 4 or 8-digit 7-segment display. Character height: 57 mm

Mobile Equipment

Measurement Tripod µSPEED-TRI	μSPEED sensors are small and lightweight and therefore very well suited for a mobile measurement in conjunction with the 2 ELOVIS tripods (TRI). Available in a light and a heavy version. The TRI tripods consist of: tripod, boom with joint, sensor attachment to the boom arm with ball head and sensor mounting plate.
Optical Adjustment Aid µSPEED-OAJ	μSPEED-OAJ3 allows a quick and safe adjustment of μSPEED systems without the aid of scales, spirit level or protractor. The adjustment aid OAJ3 is, among other things, for portable measurement applications, for measurements on rotating cylinders or in tight spaces and in applications with constantly varying material spacing.
System Case µSPEED-CASE	The ELOVIS transport case μSPEED-CASE, which comes standard in three different sizes, is ideal for safe storage and transportation of sensor components.

Software

PC Software
µSPEED-CMS

The configuration and monitoring software µSPEED-CMS is used for operating µSPEED, as well as displaying and storing µSPEED measurement values on a pc, laptop or tablet. The CMS software is mainly used at portable measurements

Fieldbus and Communication Modules

Profibus-DP, ProfiNet-RT, Ethernet-IP µSPEED-PB, µSPEED-PN, µSPEED-EN	Standard Bus Interface Module with the following output: Length (in m) , Speed (in m/s), Status Signal (valid/invalid)
MID-CNT-MODBUS-PN (-PN/-EN)	MODBUS fieldbus conversion for the MID-COUNTER. Available versions: ProfiNet, Profibus, Ethernet-IP. Connection cable included

Protection Casing

Casing for air cooling µSPEED-HSEe	The casing μSPEED-HSEe made of stainless steel is used to protect the sensor head from contamination and from unsuitable ambient temperatures. The HSEe must be supplied with suitable purging air.
Casing for air cooling and water cooling µSPEED-HSEw	The casing μSPEED-HSEw is used to protect the sensor head from contamination and from unsuitable ambient temperatures. The HSEw must be supplied with suitable purging air. It is designed for higher ambient temperatures due to the additional connection for water cooling. The HSEw contains two heat exchanger plates.
Heat Exchanger Plates µSPEED-HE	Heat exchanger plates with 2 cooling water flange connections can be mounted on one or both sides of the sensor head. The water-rinsed heat exchanger plates allow the use of the sensor in a warm measuring environment.
Quick Cange Protective Glass µSPEED-QCW	The μSPEED-QCW Quick Change Protective Glass is designed for use in harsh environments with heavily polluted ambient air. The QCW allows the replacement of the protective glass in seconds and allows the actual cleaning of the glass can be operated detached from the sensor.
Air Purge µSPEED-FAN	The air purge μSPEED-FAN is used to supply μSPEED HSE casings with purge air. Depending on the application, the purging air can be used for heating, for cooling the sensor or merely for avoiding contamination of the sensor optics. HSE and FAN are connected with an air hose.

Sensor Mounting Plate

Mounting Plate with swivel/slot hole element
µSPEED-MP

μSPEED-MP is set up via rotary element, which allows an angular adjustment of the sensor in the material movement direction by +/- 80 °. Slotted holes on the rotary element allow a distance adjustment of the sensor head

Height Adjustment Unit

Adjustment unit for precise distance adjustment of the sensor head
µSPEED-HA

The height adjustment unit allows the sensor adjustment to be carried out with the diameter and thickness variations of the material being measured at the correct measurement distance.

Cable Guidance with Stand

Cable Guidance and Sensor Tripod with Laser Protection Casing
µSPEED-CGS

The cable guidance with tripod for the μSPEED sensor (μSPEED-CGS) always ensures the correct distance between the cable and the sensor as well as the correct routing of the cables. When the laser protection casing is opened, the laser switches off automatically.

Laser Protection Equipment

Laser Protection Tube µSPEED-TUBE	The sensor head TUBE for the μSPEED sensor reduces the risk of direct exposure of the laser beam. The TUBE can be combined with the laser shutter LSH.
Laser Shutter µSPEED-LSH	The laser shutter μSPEED-LSH is used for the mechanical blocking of the laser beam. The shutter is manually activated by means of a sliding mechanism and is mounted on the front of the μSPEED system with four screws.
Angule Optics µSPEED-AO	The angle optics AO is used when the existing mounting space is very limited. The 90° angle optics makes it possible to manage with minimal space.
Laser Protection and Safety Monitoring µSPEED-LSSC	The laser protection safety monitoring links various monitoring sensors to avoid any danger from the μSPEED laser. Laser class 1 may be achieved in conjunction with other protective measures.

Lable Printer

Printer for connecting to the MID-COUNTER
µSPEED-PRT

In some applications there is a need to provide the product measured in length directly with a label which contains the essential measurement data. This is done by the printer μSPEED-PRT.

Radio Data Transmissions

Bluetooth Module
µSPEED-BT

With the Bluetooth module, the measurement data can be transmitted over a radio link. Such a solution is used when the measurement system with μSPEED-T-Box is not accessible during production. A typical application is in roping/stranding machines.

Battery Module for self-sufficient system operation

Battery Module and Data Logger
µSPEED-ACU
µSPEED-DTL

For completely self-sufficient system operation, the μSPEED sensor is powered by a battery module together with a data logger. A field of application is the speed measurement of sports vehicles, where there is often no power supply.

Measurement Principle

Laser-Encoder Lenght Measurement Systems and Speed Measurement Systems

By means of two laser beams, a bar pattern is generated on the material measurement surface. The movement of the surface of the measurement material modulates the intensity of the backscattered light into the detector, the frequency of the brightness modulation being directly proportional to the speed of the medium and to the Doppler frequency. The scattered light is converted into an electrical signal via a photodetector and fed via an analog / digital converter to a processor. The processor determines the current speed and path length from the digitized signal. The use of marks or scales on the test object is not necessary. The procedure is known by the name of “Laser Surface Velocimeter – Laser Doppler Measurement System”.

Videos

Videos for the product range of laser-encoder length measurement systems and speed measurement systems

Product Tutorial – µSPEED Laser-Encoder Length Measurement Systems and Speed Measurement Systems Product Tutorial
Product Video – µSPEED Laser-Encoder Length Measurement Systems and Speed Measurement Systems Product Explanation and Application Overview
Length Measurement in Fabric Production – µSPEED Laser-Encoder Length Measurement Systems and Speed Measurement Systems Measurement at the production output with a portable µSPEED system
Repeat Length Measurement – µSPEED -RL Laser Encoder Length Measurement Systems and Speed Measurement Systems Laser-precise measurement of repeat mark distances in a film printing machine
Differential Speed Measurement in Foil Coating Production – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Measurement on a web and parallel on the coating roller with μSPEED parallel systems
Paper-Roll Cutter Counter Calibration – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Calibrating the length counter of a winder with a portable μSPEED sensor
Tenter Frame Shrinkage Measurement – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Differential measurement in the goods infeed as well as in the goods outfeed for the determination of the goods advance
Wire Length Measurement – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Length measurement in bare-wire production with μSPEED laser system
Steel Rope Length Measurement – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Testing the measurement accuracy of a system counter for ropes with portable μSPEED laser sensors
Textile Fabric Inspection Length Measurement – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Length measurement machine for textiles is calibrated without contact with μSPEED
Nonwoven Length Measurement – µSPEED Laser Encoder Length Measurement Systems and Speed Measurement Systems Length measurement in a nonwoven fabric production machine without contact with μSPEED laser Doppler system
Certified length measurement – fabric inspection – µSPEED- MID 2014/32/EU Laser Encoder Length Measurement Systems and Speed Measurement Systems Certified, non-contact length measurement with µSPEED system in a fabric inspection machine