Ono Sokki LV-7000 Laser Doppler Surface Velocity Meter

LV-7000 series from Ono Sokki detects speed, uneven speed, distance, length of moving object or rotating object by non-contact detection with high sensitivity and high response. You can install and measure easily in the place where had been difficult in measurement so far.

The LV-7000 series enables evaluation of product features and helps to understand the phenomena more accurately. Non-contact and accurate laser detection is useful for improving parts quality, and useful for reducing loss of material.

Price Includes 

LV-7002 Sensor

LV-7100 Controller

LV-0703 3m SIgnal cabe

In stock Yes No
Price was € (Inc. VAT) RRP € Price was € (Ex. VAT) RRP €

Features

  • High sensitivity detection, safety Class 2 laser products

  • "Laser Safety Class 2" does not need safety requirement for detection such as laser protection glass, laser control regions/controller.

  •  Original optical system and demodulating circuit allow high sensitivity detection. Available to measure wide variety of targets

  •  Easy, quick positioning and checking with red visible light.

  •  Non-contact detection, No-load measurement

  • High spatial resolution with small laser-spot. Enables measurement of thin/tiny target including slender thread and narrow parts.

  • Not necessary to worry about defects such as scratch, wrinkle, or transformation.

  • Hardly affected by flipping, shaking, or eccentricity. Slip or friction is not generated.

  • Enables speed measurement and length measurement in vertical driving, negative gradient driving, which are difficult to detect by contact-type detector.

  • Expansion speed/direction measurement of extensible materials including rubber, resin, and cloth.

  • Simple operation but high function

  • Indicator on a compact sensor allows you to check the target and operating condition at the same time.

  • High speed response of 800 m/s2. Steep start and stop from zero speed are able to be detected.

  • Abilty to perform difference measurement between two points by setting two speedometers

  • High resolution detection even though the tiny speed by high resolution range.

  • Easy to see numerical values by large LED display and stand jigs.

  • Simple and speedy operation with large function button. Current setting conditions are clear at a glance.

  • Selectable output signal format from analog, digital, and phase difference depending on the usage.

Further Information

 LV-7002 Laser Doppler Surface Velocity Sensor

Detection method Laser Doppler system, back-scattering differential type
Detection polarity "+" when moving from the left to the right of the front of the sensor
Distance accuracy ±0.2 % or less  (  by length evaluation  by Ono Sokki standard plane at 25℃.)        
Laser safety class Class2
Measuring Laser λ=1550 nm
       less than 10 mW CW oscillation
Guide laser λ= 635 nm
          less than 1 mW CW oscillation
Laser beam spot size 2 mm × 1 mm ellipse  (long span: in a direction parallel with a moving object) 
LD light source life

Aiming light source: 10000 hours or more (25℃)
          * Theoretical calculated value
          Measurement light source: 10000 hours

*Theoretical calculated value
When the output light is less than  specified range, the LASER LED on the controller side is flashed and  the measurement light of controller side  is turned off.
Center of detection distance 200 mm *from the bottom surface 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
*by length evaluation by Ono Sokki standard plane at 25℃.
Scale factor Automatically calculated and read out to
        the controller  approx. 7.5 µm from the sensor.
 
Detection velocity range 0 to ±1800 m/min
Maximum tracking acceleration 800 m/s2 or more
Screw hole for LV-0030 Large magnet stand

Thread nominal diameter: M8 appropriate tightening torque requirement (6 N·m: corresponds to 0.5T type)
            Number of holes: 1
            Position: Sensor reference part, detection center axis

Depth   : 8 mm or more
Screw hole for sensor suspension
          adapter LV-0762

Thread nominal diameter: M4 Appropriate tightening torque requirement (1.5 N·m)

                                           Increased strength by helical insert processing
Number of holes: 4
Position: Sensor reference part, four corners
Depth: 4 mm or more
Screw hole for 90-degree beam bending mirror
          LV-0752

Thread nominal diameter: M3 Appropriate tightening torque requirement (0.6 N·m) 

                                           Increased strength by helical insert processing
Number of holes: 2
Position: Sensor front part
Depth: 3 mm or more
Light receive signal level  (SIG LEVEL)           Display the light reception level in 5-segment LED (green)
Light  signal  error (ERROR)           LED (red) lights up when demodulation error is occured.
Laser radiation monitor (LASER) LED (green) lights up when laser for measurement is radiated.
Outer dimensions W 75 mm X H 40 mm X D 155 mm
Weight of the main unit Approx. 750 g (not including option/ cable)
Laser safety FDA 21CFR Part 1040.10 (CDRH)
IEC60825-1:2007:2014 Class2
JIS C 6802 :2007:2014 Class2
EMC standard FCC (Part15B) : 2015
CANADA EMI standard (ICES-003) : 2016
EN61326-1:2013 class A Table2
Safety EN61010-1:2013
Operating environment

Temperature range 0 to 40 ℃ 

Humidity range 20 to 80 % (with no condensation)
Storage environment

Temperature range -10 ℃ to 50 ℃ 

Humidity range 20 to 80 % (with no condensation)

    

* Within the operating temperature range.

  

 

  

LV-7100 Laser Doppler Surface Velocity Meter Controller

Detection velocity range 0 to ±1800 m/min
Tracking acceleration 800 m/s2 (MAX) : when [FAST] is selected at RESPONSE.
          400 m/s2 (MAX) : when [SLOW] is selected at RESPONSE.
          When exceeding the  upper limit
RESPOND LED  : flash
ERROR OUT     : output
*response frequency : up to 800 Hz
Output voltage ±10 V (20 V p-p) :When input side impedance is 100 kΩ or more.
          *Short circuit protection Polarity;
"+ voltage" when moving from the left to the right of the front of the sensor.
"- voltage" when moving from the right to the left of the front of the sensor.
*Reversible
Output impedance 50 Ω or less: Should be received at 100 kΩ or more of impedance (input side).       
Cutoff frequency 5 kHz LPF GAIN fc= -3 dB 
Output terminal format BNC (receptacle), front panel side  
Velocity range
          (VELOCITY-RANGE (m/min) /V)
180 (m/min) /V              
50 (m/min) /V              
10 (m/min) /V              
1 (m/min) /V              
1 (m/min) /V
          (HIGH RESOLUTION)
Cutoff frequency 10 Hz *GAIN fc= -3 dB                     
Velocity range over LED (red) lights up when upper limit of each range is 1% over.               
Lower measurement limit, resolution 180 (m/min) /V Lower limit 0.54 m/min (F.S.) or less*1                     
50 (m/min) /V Lower limit 0.50 m/min (F.S.) or less*1                     
10 (m/min) /V Lower limit 0.03 m/min (F.S.) or less*1              
1 (m/min) /V Lower limit 0.003 m/min (F.S.) or less*1             
1 (m/min) /V
          (HIGH RESOLUTION) *fc=10 Hz
Resolution 0.01 m/min or less*1            
Linearity
          * Excluding the DC offset
180 (m/min) /V ±1 % (F.S.) or less             
50 (m/min) /V ±1 % (F.S.) or less             
10 (m/min) /V ±2 % (F.S.) or less             
1 (m/min) /V ±5 % (F.S.) or less             
1 (m/min) /V
          (HIGH RESOLUTION) *fc=10 Hz
±5 % (F.S.) or less
DC offset  180 (m/min) /V ±90 m/min or less                          *at operating temperature (0 to 40℃)              
50 (m/min) /V ±25 m/min or less         
10 (m/min) /V ±5 m/min or less 
1 (m/min) /V ±0.5 m/min or less 
1 (m/min) /V
          (HIGH RESOLUTION) *fc=10 Hz 
±0.05 m/min or less 
Low-pass filter
          (VELOCITY-LPF)
Select with the button in the [LPF] on the front panel.        
1 kHz GAIN fc=-3 dB (allowance ±2.0 dB)             
300 Hz
OFF GAIN fc= 5 kHz (-3 dB)             
Output waveform 2-phase square wave output
Output format Line driver output Hi : 2.5 V or more
Lo : 0.5 V or less
Response time : up to 1 MHz
Totem-pole output Hi : 10.5 V or more
Lo : 0.5 V or less
Response time  : up to 100 kHz
Phase difference 90 °±60 °  T : cycle T/4±T/6
Duty ratio 50 %±20 %  T : cycle T/2±T/5
Shape of output terminal NJC-2010-RF (receptacle) NANABOSHI ELECTRIC
Pulse width  (A,B Phase)          Frequency divided by 1 approx. 7.5 µm Scale factor(automatically calculated and read out from the sensor to controller) After 4 multiplying
Frequency divided by 2 approx. 15 µm
Frequency divided by 4 approx. 30 µm
Frequency divided by 8 approx. 60 µm
Frequency divided by 16 approx. 120 µm
Frequency divided by 32 approx. 240 µm
Frequency divided by 64 approx. 480 µm
Frequency divided by 128 approx. 960 µm
Frequency divided by 256 approx. 1920 µm
Pulse width selection Dip-switch setting on the real panel side
Display unit 7-segment LED (green)
7-digit + polarity (1-digit)
Decimal point
Fixed in the unit or velocity range
Display update interval
0.1 s 
Max. display length
         
9999.999 m 
Distance reset 0 Reset the distance in the front panel side 【LENGTH RESET】
          0 Reset the distance in the rear panel side 【RESET IN】
Unit selection

Selectable with 【UNIT SELECT】 button
          Speed: m/s, mm/min, m/min

Distance: m, mm
Display of light receive signal level error Flashing display the displaying unit
Display while searching [-] display
Display of scale factor error Displayed "8.8.8.8.8.8.8.8." by 7-segment LED
Display of Max. distance Flashing display
Light receive signal level display
(DETECT - LEVEL)
10-segment LED (green) array display
Light receive signal level output
(LEVEL OUT)
Output terminal format: BNC (receptacle) at front panel side
Output signal: 0 to 14 V Proportional to light receive signal level
Frequency response: GAIN fc=5 kHz (-3 dB)

Light receive signal level error display

          

(DETECT-ERROR) 

           
LED (red) lights up when the light receive level is decreased.

Light receive signal level error output (ERROR OUT) 

           

Output terminal format: NJC-163-RF (Receptacle)
          Output method: Open collector (negative logic)

Output withstand voltage: 30V or less
Sync current: 50mA or less

Search (DETECT-SEARCH) 

           
Search operation with [SEARCH] button
Standard RS-232C
Connector D-sub 9 pin
Communication specification Communication method Asynchronous full-duplex
Data signal speed (bit/ second) 19200
Character length 8 bits
Parity bit None
Start bit 1 bit
Stop bit 1 bit
Terminator CR+LF
Flow resistance None
Polarity switch (+/-)
Polarity inversion with the front panel [+/-] button
           
Polarity inversion of digital display/ Polarity inversion of velocity output voltage
LED (red) lights up while polarity inversion period

Distance reset input

          (RESET IN)           
Terminal format NJC-163-RM (Receptacle)
Input method Non-voltage a contact
Safety lock connection
(SAFETY LOCK)
Input terminal format

RM12BRD-2S (Receptacle)

*Short-circuit processing part is supplied as standard.
Input method

Non-voltage a contact input

Laser is radiated when device is short circuited.

Laser radiation ON/OFF

          (LASER)           

ON/OFF with the [LASER] button on the front panel

LED (green) lights on when it is ON
Warning display

Guide laser’s lifetime warning: Flashing approx. 1s interval

          Laser light failure: Flashing approx. 0.1s interval
Fail safe function

Always start with laser off when the power is ON.
          *Can be modified to the operation board type which starts laser emission when the power is turned ON.

Laser receiving level setting

          (DETECT-LOW TO HIGH)           
Laser receiving level setting 4 ranges
Select with the button in the [LOW TO HIGH] of the front panel. *LOW is selected at the time of shipment

Key lock
        
(KEY MARK)

 
Select with the button in the [KEY LOCK] selection switch of the front panel.
Select Press and hold the button for approx. 2  seconds. * LED (white) flashes while selecting.
Cancel Press and hold the button for approx. 2 seconds.
Key locked range Lock all key operation except [LASER] ON/OFF
Controller connection
(CONNECT IN/OUT)
Signal connection Number of connection unit: Max. 2 with electrical connection
Function when connected with a cable: Reset the distance of LV-7100 (2 units) at the same time.
Case connection

Connecting two LV-7100 on top and bottom positions (stacking) are available.*LV-0772 Connection kit is required. 

Operating environment Temperature range 0 ℃ to 40 ℃
Humidity range 20 to 80 % with no condensation
Storage environment Temperature range -10 ℃ to 50 ℃
Humidity range 20 to 80 % with no condensation
Power requirement Input voltage  100 to 240 VAC
50/60 Hz
Power consumption 70 VA or less
Power switch ON/OFF by locker switch on real panel
Cooling of main unit Forced-air cooling
Outer dimensions W 310 X H 135 X D 176 (mm) or less (excluding handle/ protruded section)        
Weight Approx. 3 kg (controller only) 
Accessory                                                                                                                                                                                                                                                                       
AC power    cable x1 YC-1 2M GY for Japan use (for VAC100)*2 
SAFETY LOCK connector x1 RM12BPE-2PH (Short    circuited) (Hirose Electric co., ltd.)
RESET IN connector x1 NJC-163-PF  (NANABOSHI    ELECTRIC)
ERROR OUT connector x1 NJC-163-PM  (NANABOSHI    ELECTRIC)
SIG A/SIG B OUT x1 NJC-2010-PM  (NANABOSHI    ELECTRIC)
Signal cable (1.5 m)  x2 MX-101 
Backup fuse x1 T3.15A AC250    V  Stored in fuse holder of the main    unit.
Instruction manual x1  

    

*1: Condition (FFT Power Spectrum, 5kHz range measurement, PEAK value by using reference measurement target)
  *2: Regarding power cable used outside of Japan, please contact your  nearest distributor or sales office nearby for more details.

                                                                                                                                                                                                                                                              

Model name Product name Rated value
LV-7002 Laser Doppler Surface Velocity Sensor WD=200
LV-7100 Laser Doppler Surface Velocity Meter Controller -
LV-0703 Sensor cable 3 m
LV-0705 Sensor cable 5 m
LV-0730 High-velocity module for sensor Supports detection velocity range 0 to ±3,600 m/min
LV-0731 High-velocity module for controller Supports detection velocity range 0 to ±3,600 m/min
LV-0752 90–degree beam bending mirror  
LV-0762 Sensor suspension adapter  
LV-0772 Controller connection kit 2 sets for LV-7100
LV-0791A Storage trunk For 1 set

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