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Laser Surface Velocity Meter
LV-7000シリーズ

Using the Ice Safe Laser to detect speed differences with high response and high precision
The LV-7000 series is a high-sensitivity, high-response laser in-plane speed meter that detects the speed and speed variations of moving objects and rotating bodies, as well as the distance and length of movement, without contact.
Since it can detect without contact, it can be easily installed and measured in places that were previously difficult to measure.
By using the LV-7000 series laser in-plane speed meter, it has become possible to evaluate product characteristics that were previously difficult to assess more accurately, allowing for better understanding of phenomena, selection of materials, improvement of component quality, and reduction of waste materials.

New type of laser in-plane speed meter LV-7200 with 2ch detection and differential operation now available
Outputs the speed difference between any two points in a mechanical system with an accuracy of 3,000ppm (0.3%) without processing the target object. This output can be used for speed control in production equipment for lithium-ion batteries and high-performance films, contributing to the reduction of losses in the processing process.

Features

Complies with Laser Safety Class 2 and features high sensitivity detection.

  • Wearing laser protective glasses is unnecessary, as are regulations and management by an administrator in laser-controlled areas.

  • High-sensitivity detection with a unique optical system and circuitry. It accommodates a wide variety of objects.

  • The detection area can be clearly identified, making positioning and verification easy and quick.

Measurement is possible without load and in a non-contact manner.

  • The laser spot is small with high spatial resolution. It is also capable of detecting threads, wires, and narrow areas.

  • There are no occurrences of defects such as scratches, wrinkles, or deformations detected by laser light.

  • It is less susceptible to the effects of bouncing and shaking, and does not experience slipping or wear.

  • It enables the detection of speed and length in vertical travel and areas with negative slopes, which are difficult to manage with contact methods.

  • It is possible to detect the stretching speed and direction of materials such as rubber, resin, and woven fabrics.

Renewing the main entity, achieving function additions and further performance improvements.

  • By connecting two sensors and performing differential calculations internally, it can be used for real-time evaluation of slip and twist.

  • A new WideBand mode has been added to extend the frequency response up to 20 kHz, allowing for more responsive measurements.

  • The detection speed can be expanded up to a maximum of 6,600 m/min. It is capable of measuring a wide range from zero speed to high speeds with a single unit.

  • Equipped with a touch panel and condition memory function, it achieves speedy operation and contributes to the reduction of measurement time.

Case Studies

Twist and Torsional Vibration Measurement

Twist and Torsional Vibration Measurement

Conduction machine, drive system, rotating shaft, turbine, forged crank, measurement of shaft twist and torsional vibration.

Tire speed and behavior measurement

Tire speed and behavior measurement

Measurement of speed difference between the tire and the ground, changes and differences in circumferential speed, twisting, deformation, and slip.

Measurement of pulley vs belt behavior.

Measurement of pulley vs belt behavior.

Crank pulley, alternator, compressor, speed of the compressor and belt, slippage, elongation and contraction, differential measurement.

Material evaluation measurement

Material evaluation measurement

Detection of elongation position, elongation position, detection of differences in elongation speed, and detection of behavior during compression and elongation.

Speed and Speed Variation Measurement

Speed and Speed Variation Measurement

Measurement of speed and speed variation for materials such as paper, film, rubber, woven fabric, non-woven fabric, and fabric plastic.

Length measurement during winding

Length measurement during winding

Measuring the length of thread, communication wire, elevator steel wire, hose, harness, and wire coating.

Transport slip measurement

Transport slip measurement

Slip measurement during the transportation of printing machines, copiers, scanners, paper, woven fabric, non-woven fabric, textiles, plastics, and other materials.

Speed measurement at vertical and negative slope transportation locations.

Speed measurement at vertical and negative slope transportation locations.

Measurement of speed and speed variation at vertical or negative slope transport locations for materials such as paper, film, rubber, woven fabric, non-woven fabric, textiles, and plastic.

System Configurations

System Configurations

O-Solution DS-5000 DR-7100 音響振動ポータブルデータレコーダー

Specifications

LV-7002 Laser In-Plane Speed Sensor

Detection method Backscattering Differential Type
detection polarity The arrow pointing from left to right in front of the sensor is +.
distance accuracy Within ±0.2 % (distance evaluation based on our company's standard surface at 25 °C)
laser light
Laser Safety Class Class2
measuring laser light λ = 1550 nm
Less than 10 mW CW oscillation
aiming laser light λ= 635 nm
Less than 1 mW CW oscillation
laser spot diameter oval shape of 2 mm × 1 mm
detection distance
Detection Distance Center 200 mm from the edge of the lower end of the sensor.
Detection Range (Depth) ±4 mm distance accuracy: ±0.2 (of Reading) % or less
±10 mm distance accuracy: ±5 (of Reading) % or less		 25 °C, company standard surface, reading value error in distance evaluation
Overall detection speed
scale factor approximately 7.5 micrometers Automatic reading from the sensor to the main unit.
Detection speed range 0 to ±1,800 m/min
maximum following acceleration 800 m/s2
Light Sensitivity Monitor
Received Light Signal Level Display the light reception level on a 5-segment LED (green).
Light reception signal error Red LED lights up during recovery error.
Outline Dimensions W 75 mm X H 40 mm X D 155 mm
Outline Dimensions
rest mass Approximately 750 g cable / excluding options.
Applicable Standards
Laser safety IEC 60825-1:2007:2014
EN 60825-1:2007:2014/A11:2021
FDA (CDRH) 21CFR 1040.10 and 1040.11
except for conformance with IEC 60825-1 Ed.3.,
as described in Laser Notice No. 56
CE marking Low Voltage Directive 2014/35/EU Standard EN 61010-1
EN 60825-1
EMC instruction 2014/30/EU Standard EN 61326-1
RoHS Directive 2011/65/EU Standard EN IEC 63000

LV-7210/LV-7220 Laser Surface Speed Meter
The main unit has been revamped, adding features and achieving further performance improvements

Model name LV-7210 LV-7220
Number of sensor inputs Type 1 (CH A) Type 2 (CH A, CH B)
General detection polarity When facing the sensor
Left ⇒ Moving right: +,
Right ⇒ Moving left: -
Detection speed range 0 to ±1800 m/min
0 to ±3600 m/min (when connected to LV-0730 sensor)
Measurement Mode Standard mode
Wide Band mode
cutoff frequency Standard mode 5 kHz (LPF GAIN fc=-3 dB)
Wide Band mode 20 kHz (LPF GAIN fc=-3 dB)
maximum following acceleration Standard mode 800 m/s2
1,600 m/s 2 (when connected to sensor with LV-0730)
Wide Band mode no upper limit
detection distance range Standard mode 0 to ±10000 m (measurement not possible when LV-0732 speed range is selected)
General voltage output Number of output terminals 2 4
Output terminal shape BNC (receptacle)
output voltage ±10 V (20 V peak-to-peak)
output impedance below 50 ohms
Output Items Speed/Distance of CH A Speed/Distance of CH A
speed/distance of CH B
Speed/Distance of A-B
speed voltage output voltage range 180 (m/min) /V
50 (m/min) / V
10 (m/min) / V
1 (m/min) / V
360 (m/min) / V (when connected with sensor LV-0730)
100 (m/min) / V (when connected to the LV-0730 sensor)
20 (m/min) / V (when connected to the LV-0730 sensor)
2 (m/min) / when connected with the LV-0730 sensor
detection limit 180 (m/min) /V Below 0.23 m/min
50 (m/min) / V Below 0.063 m/min
10 (m/min) / V 0.013 m/min or less (0.026 m/min when Wide Band mode is selected)
1 (m/min) / V Less than 0.0026 m/min (0.003 m/min when Wide Band mode is selected)
360 (m/min) /V Below 0.46 m/min (when connected with LV-0730 sensor)
100 (m/min) / V Below 0.13 m/min (when connected with the LV-0730 sensor)
20 (m/min) / V Below 0.026 m/min (0.052 m/min when Wide Band mode is selected) (when connected to the LV-0730 sensor)
2 (m/min)/ V Below 0.0052 m/min (0.006 m/min when Wide Band mode is selected) (when connected to the LV-0730 sensor)
Linearity
(excluding DC offset)		 180 (m/min) /V Within ±0.2% of Full Scale.
50 (m/min) / V
10 (m/min) / V
1 (m/min) / V within ±0.3 % (F.S.)
360 (m/min) /V Within ±0.2% of Full Scale.
100 (m/min) / V
20 (m/min) / V
2 (m/min)/ V within ±0.3 % (F.S.)
DC offset within ±0.3 % (F.S.)
Low-pass filter
(LPF GAIN fc=-3 dB)		 Standard mode OFF (5 kHz)
1 kHz
100 Hz
Wide Band mode OFF(20 kHz)
5 kHz
1 kHz
100 Hz
Distance voltage output voltage range 1000 m/V
100 m/V
1 m/V
100 mm/V
10 mm/V
1 mm/V
100 μm/V
linearity within ±0.3 % (F.S.)
DC offset within ±0.3 % (F.S.)
Outline Dimensions Outline Dimensions

Options

Model name Product Name freeze frame
LV-0703 sensor cable Cable length 3 m
LV-0705 sensor cable Cable length 5 m
LV-0730 High-speed module for sensors Detection speed range: 0 to ±3,600 m/min
LV-0732 Single Side Speed Amplification Option -270 to 3,330 m/min range added
LV-0740 1 channel additional option  
LV-0752 90-degree reflection mirror  
LV-0762 sensor suspension adapter  
LV-0773 reset signal cable  
LV-0774 cable for error output  
LV-0793 storage box Up to 2 sets can be stored.
LV-0015 XY axis micro-movement stage Stage surface: 60 × 60 mm, movement range: ±6.5 mm
LV-0016 Z-axis micro-motion stage Stage surface: 60 × 60 mm, Movement amount: 0 to 13 mm
LV-0018A steel plate  
LV-0030 large magnet stand  

High-speed module for sensors (LV-0730)

High-Speed Module for Sensors (LV-0730) No.1

By attaching the module to the sensor end face, the detection speed range can be expanded to 0 to ±3,600 m/min, with a maximum tracking acceleration of 1,600 m/s 2.

High-Speed Module for Sensors (LV-0730) No.2

*No modification of the main unit to connect is required.
*You cannot freely attach or detach the sensor.
Sensor attachment and detachment will be handled upon collection.

LV-7002 Laser Surface Speed Sensor + LV-0730 High-Speed Module Specifications

laser light
Laser Safety Class Class2
measuring laser light Wavelength = 1,550 nm, less than 10 mW, continuous wave oscillation.
aiming laser light Wavelength = 635 nm, less than 1 mW, continuous wave oscillation.
laser spot diameter oval shape of 2 mm × 1 mm
detection distance
Detection Distance Center 172 mm from the end face of the module's lower edge.
Detection Range (Depth) ±4 mm distance accuracy: ±0.2 (of Reading) % or less
±15 mm distance accuracy: ±5 (of Reading) % or less		 25 °C, company standard surface, reading value error in distance evaluation
Overall detection speed
scale factor approximately 15 micrometers Automatic reading from the sensor to the main unit.
Detection speed range 0 to ±3,600 m/min
maximum following acceleration 1,600 m/s2
Outline Dimensions W 76 mm X H 40 mm X D 183 mm
rest mass Approximately 900 g cable / excluding options

Single Side Speed Enhancement Option (LV-0732)

The detection speed range can be switched from the normal 0 to ±1,800 m/min to -270 to +3,330 m/min, allowing for an expansion of the positive detection speed range. Furthermore, when used in conjunction with the high-speed module for the LV-0730 sensor, detection is possible in the high-speed range of -540 to +6,660 m/min.

Overall detection speed Detection speed range (addition of speed range) -270 to 3,330 m/min
-540 to 6,660 m/min (when connected to LV-0730 sensor)
maximum following acceleration Standard mode 800 m/s2
1,600 m/s 2 (when connected to sensor with LV-0730)
Wide Band mode no upper limit
speed voltage output voltage range 333 (m/min) / V
666 (m/min) / V (when connected to sensor LV-0730)
detection limit 333 (m/min)/V Less than or equal to 0.42 m/min
666 (m/min)/V 0.84 m/min or less
linearity Within ±0.2% of Full Scale.
DC offset within ±0.3 % (F.S.)
output voltage -0.811 V to +10 V

90-degree reflection mirror (LV-0752)

*The LV-0730 can be used while attached. *The detection distance (depth) will be ±8 mm.
*LV-0730 can be used while attached.
*The detection distance (depth) will be ±8 mm.

This is an optical device that can bend laser light at any position by ±90 degrees. It assists in irradiating laser light to targets in narrow spaces or gaps, making measurement possible.

  • usage example
    usage example

Sensor Suspension Adapter (LV-0762)

It can also be used when attached to the LV-0730.
It can also be used when attached to the LV-0730.

By attaching to the sensor, it increases the number of fixed points, allowing for overhang and inverted suspension of the sensor. The attachment of the sensor suspension adapter enables suspension from four directions.

  • usage example
    usage example
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最終更新日:2025/09/04