Laser in-plane velocometer
LV-7000シリーズ
High-response, high-precision detection of speed differences using an eye-safe laser.
The LV-7000 series is a highly sensitive, high-response laser in-plane velocometer that detects the speed, speed fluctuations, and distance/length of moving and rotating objects without contact.
Because it can detect objects without contact, it can be easily installed and used to take measurements in places where measurement was previously difficult.
By using the LV-7000 series laser in-plane velocity meter, it becomes possible to more accurately evaluate product characteristics that were previously difficult to assess and understand phenomena, which can be used for material selection, improving component quality, and reducing waste materials.
Introducing the new LV-7200 laser in-plane velocometer with 2-channel detection and differential calculation capabilities.
Without processing the object, it outputs the speed difference between any two points in a machine system with an accuracy of 3,000 ppm (0.3%). 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 stage.
Torsional vibration measurement
Torsion measurement and torsional vibration measurement of transmissions, drive systems, rotating shafts, turbines, forged cranks, and shafts.
Tire speed and behavior measurement
Measurement of tire behavior such as speed difference between the tire and contact patch, peripheral speed change/difference, twisting, deformation, and slip.
Measurement of pulley vs. belt behavior
Crank pulley, alternator, compressor, and compressor belt speed, slip, elongation/compression, and differential measurement.
Material evaluation and measurement
Detection of material stretching position, detection of differences in stretching position and stretching speed, and detection of behavior during compression and stretching.
Speed and speed unevenness measurement
Speed and speed unevenness measurement of paper, film, rubber, woven fabrics, nonwoven fabrics, fabric plastics, etc.
Length measurement during winding
Length measurement of thread, communication wire, elevator steel wire, hose, harness, and wire insulation.
Conveyor slip measurement
Slip measurement during transport of printing presses, copiers, scanners, paper, woven fabrics, nonwoven fabrics, textiles, plastics, etc.
Speed measurement at vertical and negative gradient conveying points
Speed and speed unevenness measurement in vertical and negative gradient conveying sections for paper, film, rubber, woven fabrics, nonwoven fabrics, textiles, plastics, etc.
LV-7002 Laser In-Plane Velocity Sensor
| Detection method | Backscattered light differential type | ||
|---|---|---|---|
| Detection polarity | The arrow pointing from left to right when facing the sensor indicates a + | ||
| Distance accuracy | Within ±0.2% (distance evaluation using our standard surface at 25°C) | ||
| Laser light | |||
| Laser safety class | Class 2 | ||
| Measurement laser light | λ = 1550 nm Less than 10 mW CW oscillation |
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| Targeting laser beam | λ = 635 nm Less than 1 mW CW oscillation |
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| Laser spot diameter | 2 mm × 1 mm oval | ||
| Detection distance | |||
| Detected distance center | 200 mm *From the bottom edge of the sensor | ||
| Detection range (depth) | Distance accuracy: ±4 mm, within ±0.2% (of Reading) Distance accuracy: ±10 mm, within ±5% (of Reading) |
Reading error at 25℃, on our standard surface, and measured by distance. | |
| detection speed in general | |||
| Scale factor | Approximately 7.5 μm | Automatic reading from the sensor to the main unit | |
| Detection speed range | 0 to ±1,800 m/min | ||
| Maximum tracking acceleration | 800 m/s2 | ||
| Light sensitivity monitor | |||
| Received light signal level | The light reception level is displayed using a 5-segment LED (green). | ||
| Light reception signal error | LED (red) lights up when demodulation error occurs. | ||
| Outline drawings | W 75 mm x H 40 mm x D 155 mm | ||
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| Body mass | Approximately 750 g (excluding cable/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 |
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| CE marking | Low Voltage Command | 2014/35/EU | Standard EN 61010-1 EN 60825-1 |
| EMC directive | 2014/30/EU | Standard EN 61326-1 | |
| RoHS Directive | 2011/65/EU | Standard EN IEC 63000 | |
LV-7210/LV-7220 Laser In-Plane Velocity Meter
The main unit has been redesigned, adding new features and achieving further performance improvements.
| Model name | LV-7210 | LV-7220 | ||
|---|---|---|---|---|
| Number of sensor inputs | 1 set (CH A) | Two types (CH A, CH B) | ||
| General detection | polarity | Facing the sensor When moving from left to right: +, When moving from right to left: - |
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| Detection speed range | 0 to ±1800 m/min | |||
| 0 to ±3600 m/min (when LV-0730 sensor is connected) | ||||
| 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 tracking acceleration | Standard mode | 800 m/s2 | ||
| 1,600 m/ s² (when LV-0730 sensor is connected) | ||||
| 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 pp) | |||
| Output Impedance | 50 Ω or less | |||
| Output items | Speed/distance of CH A | Speed/distance of CH A | ||
| Speed/distance of CH B | ||||
| Speed/distance of AB | ||||
| 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 LV-0730 sensor is connected) | ||||
| 100 (m/min) / V (when LV-0730 sensor is connected) | ||||
| 20 (m/min) / V (when LV-0730 sensor is connected) | ||||
| 2 (m/min) / V (when LV-0730 sensor is connected) | ||||
| Lower limit of measurement | 180 (m/min) /V | 0.23 m/min or less | ||
| 50 (m/min) / V | 0.063 m/min or less | |||
| 10 (m/min) / V | 0.013 m/min or less (0.026 m/min when Wide Band mode is selected) | |||
| 1 (m/min)/V | 0.0026 m/min or less (0.003 m/min when Wide Band mode is selected) | |||
| 360 (m/min) /V | 0.46 m/min or less (when LV-0730 sensor is connected) | |||
| 100 (m/min) / V | 0.13 m/min or less (when LV-0730 sensor is connected) | |||
| 20 (m/min) / V | 0.026 m/min or less (0.052 m/min when Wide Band mode is selected) (when LV-0730 sensor is connected) | |||
| 2 (m/min)/V | 0.0052 m/min or less (0.006 m/min when Wide Band mode is selected) (when LV-0730 sensor is connected) | |||
| linearity (Excluding DC offset) |
180 (m/min) /V | Within ±0.2% (FS) | ||
| 50 (m/min) / V | ||||
| 10 (m/min) / V | ||||
| 1 (m/min)/V | Within ±0.3% (FS) | |||
| 360 (m/min) /V | Within ±0.2% (FS) | |||
| 100 (m/min) / V | ||||
| 20 (m/min) / V | ||||
| 2 (m/min)/V | Within ±0.3% (FS) | |||
| DC Offset | Within ±0.3% (FS) | |||
| 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% (FS) | |||
| DC Offset | Within ±0.3% (FS) | |||
| Outline drawings |  |
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By attaching a module to the end face of the sensor, the detection range can be expanded to a detection speed range of 0 to ±3,600 m/min and a maximum tracking acceleration of 1,600 m/s².
*No modification to the connected device is required.
*The sensor cannot be freely attached or detached.
Sensor installation and removal will be handled by pickup.
*The detection range (depth) is ±8 mm.
This optical jig can bend a laser beam by ±90 degrees at any desired position. It assists in irradiating objects in narrow spaces or gaps with laser light, enabling measurement.
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Usage example
By attaching it to the sensor, it increases the number of mounting points, enabling sensor overhangs and inverted suspension. The sensor suspension adapter allows for suspension from all four sides of the sensor.
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Usage example