Laser Doppler Vibrometer
LV-1700series
Smart & Small
Providing operationality and high delectability
Featuring wide frequency range up to 3 MHz
Measurement range
1 Hz to 3 MHz
0.3 μm/s to 10 m/s
| • | For general purpose and machine vibration |
| • | For high speed machine vibration on an internal combustion |
| • | For vibration on an ultrasonic tool |
Suitable to measure minute level vibration
High resolution in nano-scale
Measurement frequency
1 Hz to 200 kHz
0.05 μm/s to 0.5 m/s
| • | For vibration on thin membrane |
| • | For minute vibration on micro machines, precise and delicate structure |
| • | For general purpose and machine vibration |
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The LV-1700 series Laser Vibrometer enables minute vibration measurement and analysis in high-accurate resolution. With being adopting the improved optical system, furthermore refurbishing signal processing system and a platform, the brand new Laser Vibrometer can realize high sensitivity at 20 dB much than that of our conventional products and catch up vibration in high S/N ratio.
The sensor head is designed to be compact and light weight (approx. 650 g), which an interferometer system is built in, and can approach to a measuring object closer to min. 100 mm in the standard specification. In addition, it provides good operationality as a level indicator is featured on its sensor head, so that signal detection condition can be monitored easily.
Furthermore, using a variety of optional functions and accessories, it may expand its application and enables minute vibration detection on precise and delicate objects or structure, thin membranes, transparent films, rotating discs, and the like, which can not be activated by a contact type vibration sensor. With non-contact detection method, vibration measurement through the glass and on an object in high temperature can also be available.
| Example of applications; | |
| • | Transfer function measurement of optical pickups used for CD, MO and DVD |
| • | Vibration measurement on each component of HDD |
| • | Structure analysis of movable mechanism |
| • | Vibration measurement of thin membranes such like microphone of cellular phone or receiver |
| • | Vibration measurement of parts, devices or components for automotive related, plant facilities and micro-machines |
In combination with an FFT analyzer, vibration can be analyzed and monitored as visible data in high resolution.
Combining the LV-1700 Series with the LV-0155 objective lens and the LV-0180 video monitor unit enables vibration detection of ultra-small objects.
Features
· High sensitivity
With being adopting the improved optical system, it can realize high sensitivity at 20 dB much than that of our conventional products and catch up vibration in high S/N ratio.
· Compact and light weight
A sensor head is just approx. 650 g including lens and can be stored in the housing section of the amplifier. The brand new LV-1700 series is designed in all-in-one concept and overall weight is just approx. 12 kg. A sensor head section can be stored in the housing section of the amplifier.
· High safety
Light source is specified as Class 2 with max. 1 mW output in red color visible light. (approx. 633 nm) For highly safety reason, interlock function, remote shutter and key switch are equipped as standard accessories.
* Light source conforms to following laser safety standards; Class 2 in JIS C 6802, IEC 60825-1 : 2001, FDA CDRH
· Approaching to an object much closer
With an interferometer system being built in, and can approach to a measuring object closer to min. 100mm* in the standard specification. In addition, it provides good operability as a level indicator is featured on its sensor head, so that signal detection condition can be monitored easily.
* from the edge of lens
· Good operationality
As the signal level indicator and error detection display are featured on the sensor head. It may get signal condition monitoring much easier even the amplifier section is located far from the sensor head.
· CCD video monitor unit
CCD video camera unit option can monitor a spot on a measuring object at approx. 60-fold magnification so that laser beam spot can be set and adjusted precisely in the same axis of the sensor head. Thus, it may project laser beam more properly even a measuring object is a small, compact and delicate structure.
· A variety of optional functions and accessories
A variety of optional functions of the fringe counter unit, 20 MHz wide range unit and other peripheral accessories such like 90° reflection mirror and so on, it's not just for signal detection, but also data analysis in combination with FFT analysis for evaluation of frequency characteristics.
· On-line control
An RS-232C interface is featured for on-line control.
System Configuration
(Each product in the analyzer section in the below configuration is linking to its HTML page.)
Specifications
Sensor Unit
| LV-1710 | LV-1720 (discontinued) / 1720A | |
|---|---|---|
| Detection demodulation system | Velocity demodulation using optical heterodyne detection | |
| Light source | He-Ne laser (632.8 nm wavelength) | |
| Reflected light output | Within 1 mW (conforming to Class 2 JIS C6802 standard) | |
| Measurement distance | 100 mm to 5 m | |
| Laser spot | 20µm or less (at the shortest measurement distance) | |
| Signal cable length | 3 m (can be extended to a maximum of 15 m by modification on request.) | |
| Display unit | Level
display, 10-segment LED bar display Output error display (red LED display) |
|
Converter Unit
| LV-1710 | LV-1720 (discontinued) | LV-1720A | |
|---|---|---|---|
| Measurement frequency range | 1 Hz to 3 MHz | 1 Hz to 300 kHz | 1 Hz to 200 kHz |
| Velocity range | 1 m/s/V (max. 10 m/s) 0.1 m/s/V (max. 1 m/s) 0.01 m/s/V (max. 0.1 m/s) |
0.05 m/s/V (max. 0.5 m/s) 0.01 m/s/V (max. 0.1 m/s) 0.002 m/s/V (max. 0.02 m/s) |
0.05 m/s/V (max. 0.5 m/s) 0.01 m/s/V (max. 0.1 m/s) 0.001 m/s/V (max. 0.01m/s) |
| Velocity output | Analogue voltage: ±10 V (DC offset within ±20 mV) | ||
| Minimum velocity resolution | 0.3 µm/s (when the range is 0.01 m/s/V and the LPF 1 MHz or 1 kHz) | 0.1 µm/s (when the range is 0.002 m/s/V and 1 kHz Filter OFF) | 0.05 µm/s (when the range is 0.001m/s/V and 1 kHz Filter OFF) |
| Low-pass filter | 100 kHz, 1 MHz, OFF | 20 kHz, 100 kHz, OFF | |
| High-pass filter | 10 Hz, 100 Hz, OFF | ||
| Output impedance | 50 Ω (the lowest input impedance is 100 kΩ or higher) | ||
| Monitor output | Analogue voltage: 0 to 10V (output impedance 50 Ω) | ||
| Velocity range display | LED display | ||
| Display unit | Level
display, 20-segment LED bar display Laser emission (green LED) Velocity overrange (red LED) Sensor error display (red LED) |
||
| Storage | The sensor unit fits into the conversion unit, and the cable is wound up on the rear panel. | ||
* Click here, to get measuring range
External Remote
| LV-1710 | LV-1720 (discontinued) / 1720A | |
|---|---|---|
| Safety lock | Intercepts
the laser beam path (laser emission when the beam path is short.) Non-voltage 1a contact input |
|
| Mechanical shutter | Intercepts the laser beam path when the main unit’s key switch or the safety lock is activated. | |
| Interface | RS-232C | |
General Specifications
| LV-1710 | LV-1720 (discontinued) / 1720A | |
|---|---|---|
| Operating power supply | 100 to 240 VAC, 50/60 Hz | |
| Power consumption | 65 VA or less (at 100 VAC, 50 Hz) | |
| Operating temperature range | 0 to 40°C | |
| Storage temperature range | -10 to +50°C | |
| Operating humidity range | 30 to +80% RH (non-condensing) | |
| Sensor weight | Approx. 650 g (excluding the cable) | |
| Main unit weight | Approx. 12 kg (including the sensor) | |
Options
LV-0120 Fringe Count Displacement Meter Unit
Designed for use with the LV Series Laser Doppler Vibrometers, the LV-0120 is a displacement meter that uses the fringe count method. DC displacement measurement is also possible.
Maximum resolution: 5 nm
Output signal resolution: 13-bit
Measurement frequency range: DC to 100 kHz
Output signal: Analog signal ±10 V
Power supply: 100 VAC ±10% 1A (120/220/240 VAC on request.)
Operating temperature range: 0 to 40°C
Outer dimensions: 420 (W) x 100 (H) x 500 (D) mm
Weight: 6.5 kg
| Range | Measurement range | Output voltage sensitivity | Maximum response speed |
|---|---|---|---|
| 1 | ±20 µm | ±2 µm/V | 0.079 m/s |
| 2 | ±160 µm | ±16 µm/V | 0.74 m/s |
| 3 | ±1.25 mm | ±125 µm/V | 1 m/s |
| 4 | ±10 mm | ±1 mm/V | 5 m/s |
| 5 | ±80 mm | ±8 mm/V | 5 m/s |
LV-0160 20 MHz Wideband Unit
Enables measurement up to a frequency of 20 MHz* when connected to the LV-1710/1720(discontinued)/1720A Laser Doppler Vibrometers.
* Modification to enable connection is required.
Measurement speed range: 2 mm/s to 2 m/s
Velocity measurement range: 2 (m/s) V
Measurement frequency range: 1 Hz to 20 MHz
Velocity output signal: Analog voltage ±2.5 V
Output impedance: 75 Ω
Power supply: 100 VAC ±10% 1A (120/220/240 VAC on request.)
Operating temperature range: 0 to +40°C
Outer dimensions: 420 (W) x 100 (H) x 500 (D) mm
Weight: Approx. 6.5 kg
Option Boards for Displacement Output and Acceleration Output
If an option board is built into the LV-1710/1720(discontinued)/1720A, output of displacement or acceleration signals via the option connector is enabled.
Output impedance: 50 Ω
Voltage output: ±10 V
Both displacement output board (LV-0712/LV-0722(discontinued)/LV-0722A) and acceleration output board (LV-0711/LV-0721(discontinued)) can not be built in (LV-1710/LV-1720(discontinued)/LV-1720A) simultaneously.
LV-0712 Displacement output board for LV-1710
| LV-1710 measurement ranges | Displacement measurement ranges | ||
|---|---|---|---|
| (1Hz to 20kHz) | (10Hz to 50kHz) | (1kHz to 200kHz) | |
| 1.0(m/s)/V | 100(mm/V) | 1(mm/V) | 10(μm/V) |
| 0.1(m/s)/V | 10(mm/V) | 100(μm/V) | 1(μm/V) |
| 0.01(m/s)/V | 1(mm/V) | 10(μm/V) | 100(nm/V) |
LV-0711 Acceleration output board for LV-1710
| LV-1710 measurement ranges | Acceleration measurement ranges | ||
|---|---|---|---|
| (1Hz to 2kHz) | (1Hz to 20kHz) | (100Hz to 400kHz) | |
| 1.0(m/s)/V | 103(m/s2)/V | 105(m/s2)/V | 107(m/s2)/V |
| 0.1(m/s)/V | 102(m/s2)/V | 104(m/s2)/V | 106(m/s2)/V |
| 0.01(m/s)/V | 101(m/s2)/V | 103(m/s2)/V | 105(m/s2)/V |
LV-0722(discontinued) Displacement output board for LV-1720(discontinued)
| LV-1720 measurement ranges | Displacement measurement ranges | ||
|---|---|---|---|
| (1Hz to 20kHz) | (10Hz to 50kHz) | (1kHz to 200kHz) | |
| 0.05(m/s)/V | 5(mm/V) | 50(μm/V) | 500(nm/V) |
| 0.01(m/s)/V | 1(mm/V) | 10(μm/V) | 100(nm/V) |
| 0.002(m/s)/V | 0.2(mm/V) | 2(μm/V) | 20(nm/V) |
LV-0721(discontinued) Acceleration output board for LV-1720(discontinued)
| LV-1720 measurement ranges | Acceleration measurement ranges | ||
|---|---|---|---|
| (1Hz to 2kHz) | (1Hz to 20kHz) | (100Hz to 300kHz) | |
| 0.05(m/s)/V | 5×101(m/s2)/V | 5×103(m/s2)/V | 5×105(m/s2)/V |
| 0.01(m/s)/V | 101(m/s2)/V | 103(m/s2)/V | 105(m/s2)/V |
| 0.002(m/s)/V | 2(m/s2)/V | 2×102(m/s2)/V | 2×104(m/s2)/V |
LV-0722A Displacement output board for LV-1720A
LV-1720A measurement ranges |
Displacement measurement ranges |
||
|---|---|---|---|
(1Hz to 20kHz) |
(10Hz to 50kHz) |
(1kHz to 200kHz) |
|
0.05(m/s)/V |
5(mm/V) |
50(μm/V) |
500(nm/V) |
0.01(m/s)/V |
1(mm/V) |
10(μm/V) |
100(nm/V) |
0.001(m/s)/V |
0.1(mm/V) |
1(μm/V) |
10(nm/V) |
LV-0721A Acceleration output board for LV-1720A
LV-1720A measurement ranges |
Acceleration measurement ranges |
||
|---|---|---|---|
(1Hz to 2kHz) |
(1Hz to 20kHz) |
(100Hz to 200kHz) |
|
0.05(m/s)/V |
5×101(m/s2)/V |
5×103(m/s2)/V |
5×105(m/s2)/V |
0.01(m/s)/V |
101(m/s2)/V |
103(m/s2)/V |
105(m/s2)/V |
0.001(m/s)/V |
1(m/s2)/V |
1×102(m/s2)/V |
1×104(m/s2)/V |
LV-0030 Large size magnetic stand
The magnetic stand is used for positioning the sensor. Using it together with the LV-0015 or LV- 0016 fine-positioning stage enables fine adjustment of the detection position. |
|
LV-0301 90-degree reflecting mirror
Attaching the mirror to the LV- 1710/1720A lens enables the laser beam to be bent 90 degrees and rotated 360 degrees, so that it can be aimed at areas such as small crevices. |
|
LV-0105 Ultra-thin reflecting mirror
This is a 90-degree reflecting mirror for use in areas that are narrower than the tip of the LV- 0301 mirror. It is used to replace the mirror on the tip of the LV-0301. ø=4 mm |
|
LV-0015 Fine-positioning XY stage
The XY stage enables precise alignment of the sensor position. Stage surface: 60 x 60 mm |
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LV-0017A Large size tripod
Used for positioning the sensor in locations where there is no bed plate. * A conversion adapter is required for direct mounting of the sensor. |
|
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LV-0016 Fine-positioning Z stage
The Z stage enables precise alignment of the sensor up/down position. Stage surface: 60 x 60 mm |
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LV-0155 Objective Lens
Attaching the objective lens to the end of the LV-1710/1720A lens enables the laser spot to be focused to approximately 3 µm. Measurement distance: Approx. 40 mm * A conversion adapter to enable attachment is provided. |
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LV-0200 Benchtop vibration isolator
Isolates the sensor from vibrations transmitted through areas such as the floor. Auto-leveling type. |
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LV-0300 Storage trunk
The storage trunk can hold the LV- 1710/1720A main unit together with options such as the large-format magnetic stand. Weight: Approx. 9 kg |
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LV-0180 Video Monitor Unit
Attaching the video monitor unit to the LV-1710/1720A lens enables easy checking of the laser spot position at a high magnification ratio. Measurement of ultra-small components can be easily performed. Monitor magnification ratio: Approx. 60 times* *When a 15” monitor is used |
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LV-0020 Air purge case Protects the sensor from on-site oil mist and dust. * A separate air unit is required. |
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Revised:2010/02/25
