Vibration Isolation Solutions

AVI-400 Series

This moderately priced dynamic vibration isolation system achieves in a very small volume better isolation than is possible with the biggest and most expensive passive systems. Inertial feedback via force transducers is used to provide not only isolation from building vibrations, but also isolation from vibration sources placed on the system itself. This means, for example, that a delicate microscope isolated by the system will remain at rest despite forces being applied via the operator's hands. 

The inherent stiffness of the system, typically 500 times greater than that of a 1 Hz resonance passive isolator, imparts excellent directional and positional stability. The lack of any low frequency resonance, a resonance which plagues all passive systems, allows the systems to be stacked for super-isolation in severe environments. 

The AVI-400/LP series is an adaptable system consisting of two modules and is ideal for supporting delicate Fabry-Perot interferometers and tunnel-microscopes, allowing the ultimate performance to be achieved from these and other high resolution instruments. This system offers excellent isolation in typical laboratory environments.

The default configuration of a AVI-400/LP isolation system consists of 2 vibration isolation units, allowing for a load of 800kg. Each module by itself isolates against vertical and horizontal translations and against rotations about one horizontal axis. The combination of two modules isolates against all six possible translational and rotational vibrations. Isolation of the standard AVI-400/LP system begins at about 1.2Hz, increasing rapidly to at least 35dB beyond 10Hz. 

Paired with the LFS-3 Low Frequency Sensor the AVI-400/LP active vibration isolation units can go down to an isolation frequency of 0.7Hz .
The isolation performance is controlled by an A4CU controller unit, a rackmountable option is available on request. If the customer application requires greater load capabilities or has a larger instrument footprint more isolation units can be added. 

Please contact us with your individual application requirements. Request quote

  • Main features

    • Active Isolation capabilities:
      1.2 - 200Hz in all 6 degrees of freedom (purely passive beyond 200Hz)
    • Piezoelectric sensor and actuator technology
    • Settling time: < 10ms
    • Performance (Reduction of incoming vibrations):
      5Hz > 22dB (92% reduction)
      10Hz > 34dB (98% reduction)
      With LFS-3 sensor: 5Hz > 43dB (99.3%), 10Hz > 50dB (99.7%)
    • No Setup-time/calibration during day-to-day operation (only one-time initial weight-calibration required)
    • No air required
    • No low frequency resonance
    • Low power technology
      • no heating up
      • strongly reduced power consumption
      • no electromagnetic disturbances

  • Applications

    • Scanning Electron Microscopy (SEM & FIB)
    • Transmission Electron Microscopy (TEM)
    • Scanning Tunnel Microscopy (STM)
    • Interferometry & Wafer Inspection Systems
    • Stationary Roughness Measuring Systems
    • Nanoengineering & Nanolithography
    AVI400S/4/LP

    AVI400-S/4/LP

    AVI400-S/4/LP with LFS-3 sensor supporting a ThermoFisher Talos TEM

    AVI400EM/2/LP

    AVI400-EM/2/LP

    AVI400EM/2/LP supporting a Zeiss Sigma 300 VP

  • Sizes

    The AVI-400 Series active vibration isolation systems are available in 3 different sizes:

     Model Dimensions Max. Load
    AVI-400-S 396 x 190 x 112,5 mm³ 800 kg
    AVI-400-M 720 x 190 x 112,5 mm³ 800 kg
    AVI-400-XL 820 x 230 x 112,5 mm³ 800 kg

    Custom sizes available on request

  • Technical Specification

    Isolation Dynamic: 1.2Hz - 200Hz
    purely passive beyond 200Hz
    Transmissibility Comparison transmissibility curve AVI series vs. passive systems
    Transmissibility above 10 Hz is always less than 0,017 (-35dB)
    Correction Forces +/- 16 N vertical
    +/-  8 N horizontal
    Static Compliance approx. 1.75 µm/N vertical
    approx. 3.5  µm/N horizontal
    Maximum load 800 kg (single unit: 400 kg)
    Dimensions (single unit): Top plate :
    360 x 190 mm (AVI-400S)
    720 x 190 mm (AVI-400M)
    820 x 230 mm (AVI-400XL)

    Bottom plate :
    396 x 182 mm (AVI-400S)
    636 x 182 mm (AVI-400M)
    856 x 182 mm (AVI-400XL)

    Height :
    112.5 mm
    Weight (single unit): 20 kg (AVI-400S)
    24 kg (AVI-400M)
    28 kg (AVI-400XL)

    A4CU Controller

    Safety class 1
    Power consumption Typically 18 W 
    Input voltage 90-125VAC / 200-250VAC +/- 10% , 50 - 60 Hz
    Overload 16 LEDs indicate overload in input stages
    Monitor signal A multiplexed signal for display on oscilloscopes shows vibration levels with and without isolation - for diagnostic purposes only

    Normal Environmental Conditions

    Protection class IP 20
    Temperature range 5°C - 40°C
    Relative humidity 10-90 % (5-30 °C) / 10-60 % (30-40 °C)
    Application Indoor
    Altitude Up to 2000 m (6.500 ft)

  • Downloads

    Manual

    Infomaterial

    CAD Models

    Please contact us if you need more information.

  • TFS Talos on AVI400S/5/LP

    TFS Talos on AVI400S/5/LP

  • Zeiss Sigma 300VP on AVI400M/2/LP

    Zeiss Sigma 300VP on AVI400M/2/LP

  • Jeol JSM-7900F on AVI400XL/3/LP

    Jeol JSM-7900F on AVI400XL/3/LP

  • Tescan S9000 on AVI400M/2/LP

    Tescan S9000 on AVI400M/2/LP

  • Zeiss EVO15 on AVI400M/2/LP

    Zeiss EVO15 on AVI400M/2/LP

  • Taylor Hobson Talysurf on AVI200M/2/LP

    Taylor Hobson Talysurf on AVI200M/2/LP

  • Zeiss Orion Plus on AVI600S/4/LP

    Zeiss Orion Plus on AVI600S/4/LP

  • JEOL JSM-IT800 on AVI400XL/2/LP and AVI200XL/1/LP

    JEOL JSM-IT800 on AVI400XL/2/LP and AVI200XL/1/LP

    26

    Years of Experience

    In the field of vibration isolation consultancy

    1396

    Happy Customers

    470

    Setups

    Successfully installed in 2024

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