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Laser Vibrometer
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Product Code : 10

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Product Specification
Laser Vibrometer
The AT Series Laser Doppler Vibrometer can measure the vibration of an object without contact, by means of the optical heterodyne method. By FM-demodulating
the difference in frequency between reference and measured light, the AT Series can detect the speed and frequency of an object's vibration, rendering microvibration measurement possible.

The wide range of AT Series applications includes pickups for DVDs, CDs, and HDDs, vibration analysis of audio equipment, as well as applications relating to the
automobile industry, general plant equipment, and micromachines.

The AT500, a laser vibration meter, enables non-contact sensing by the optical heterodyne method. It integrates a sensor unit with a built-in laser tube and a demodulator, so it has a wide range of uses in manufacturing, investigations, research, and development.

Ease of installation
The AT500 can be easily installed. A laser beam can be focused on the measuring spot simply by installing the AT500 horizontally. Necessary operations and displays are located on the front, which provides user-friendly operation.

Highly accurate vibration measurement for soft or light objects
Non-contact vibration measurement achieves high accuracy without affecting the vibration of the object.

Vibration measurement for small structures
As the diameter of a laser beam spot is very small (approx. 20􀐖m when measured at close range), the vibration of very small structures can be measured.

Easy positioning of focus and reflected light
The dedicated, highly sensitive lens enables comparatively easy sensing, even for a material that dose not reflect a laser beam well. Moreover, the built-in auto-focus function automatically selects the optimum focal point.

Scalable functions
As the AT500 has a single range demodulating function, measurement is enabled simply by connecting it to the output terminal. Connecting to AT3700 or AT3600
demodulation unit, which can be purchased separately, enables a wider range of measurement.

Specifications

AT500􀊵05
 		AT500􀊵20
Laser portion
Laser beam
 		He-Ne gas laser (wavelength 632.8nm)
Laser output
 		1mW or less
Measuring range of distance
 		90mm to 600mm from lens surface*1
Focus function
 		Manual/Auto*2
Shutter function
 		Electromagnetic system (Interlock and remote control)
Demodulation portion
Velocity
output
 		Frequency
characteristics
 		DC to 50kHz*3
 		DC to 200kHz*3
Velocity range
 		10􀊔3m/s/V
 		10􀊔2m/s/V
Integrating
function
 		Frequency band
 		10Hz to 20kHz
Displacement range
 		1µm/V
Phase
compensation
 		Phase compensation range
DC to 200kHz*4
Output phase delay
Within 􀊶5 deg*5
Filter*6
 		H.P.F.
 		DC,10Hz,100Hz
 		DC,10Hz,100Hz
L.P.F.
 		1kHz,10kHz,50kHz
 		5kHz,50kHz,200kHz
General
Remote functions
 		Input: Auto Focus, Shutter, CAL
Output: Busy, Alarm, Level, Emission
Additional demodulation functions*7
 		Light acceptance signal output BNC terminal
Environment
 		5 to 35􀋆,30 to 80􀋋R.H.
Power source
 		AC adapter: AC100V to 240V/50 to 60Hz
Power consumption
 		Approx. 50VA (AC)
External size [WxDxH] (Approx.)
 		113􀊷329􀊷142 mm (excluding protruding portions)
Weight (Approx.)
 		4.5kg

Remarks
  • *1: Beam diameterØ20µ m/90mm, Ø100µ m/600mm
  • *2: Detection is limited
  • *3: Within -3dB
  • *4: Both H.P.F. and L.P.F. are OFF
  • *5: At 100kHz
  • *6: Attenuation factor: -24dB/OCT
  • *7: For other duplication unit
The sensor unit measures the magnitude of interference (the difference in frequency) by irradiating the object to be measured with a reference beam, receiving the reflected light (now Doppler-shifted as a result of vibration), and O/E-converting the measured magnitude of interference (light is converted into analog signals).

The sensor head and laser unit, built as one piece, constitute the sensor unit. The unique aluminum die-cast frame substantially reduces size and improves ruggedness
and ease of use (as compared to more conventional products). These features combine to provide a high degree of reliability, permitting use in DVD research and
the like, as well as on production lines. Since option fiber is not used, measurement light and reflected light can be made to interfere very efficiently, thus permitting a high degree of sensitivity in measurement. In addition, the improved sensitivity of the AT0023 eliminates previous difficulties in adjusting and setting sensitivity levels.

Specifications
  • Laser light source
    • He-Ne gas laser
  • Wavelength:632.8nm
  • Laser beam output
    • 1mW max. Sensor head tip:Class 2
  • Beam diameter
    • Approx.20µm for a measurement distance of 250 mm
    • Approx.50µm for a measurement distance of 500 mm
  • External dimensions (WxDxH) (approx.)
    • 85mmx292mmx108mm not including projectiong parts,such as the lens unit)
  • Mass (weight) (approx.):3kg
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Contact Details
ANGEL INDIA CAD CAM PVT. LTD.
J-21, Udyog Nagar, Rohtak Road, Nangloi, New Delhi - 110041, India
Phone:91-11-25487071/72/73
Fax:91-11-25487074
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Key Personnel
Mr. Anil Kumar (Director)
Mobile:+919810493987, +919818693985


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