Overview VAIS-PMT is the world's exclusive pneumatic active anti-vibration isolator integrated with anti-noise chamber. Nano scale measurement instruments are vulnerable not only to floor structural vibration, but also to acoustical vibration and air flow. The VAIS-PMT's active anti-vibration system and anti-noise shield system effectively eliminate such factors.
VAIS-PMT provides consistently stable vibration environment with pneumatic active anti-vibration frame against even aperiodic impulse vibration input. Anti-noise chamber with multi-layer soundproof walls block air-flow nearby HAVC equipment and noise.
With high damped pneumatic support frame, VAIS-PMT shows superior robustness against aperiodic impulse vibration.
Utilizing feedback and floor feed-forward control, VAIS-PMT has excellent capability to prevent low-frequency vibration disturbance, a common issue with passive anti-vibration systems.
Three LED lights (Red, Green, Blue) on the front panel conveniently inform the user of the vibration environment change and seviceability.
Through remote control, VAIS-PMT provides optimal control parameters and inspection of abnormalities without engineer's vitis
Anti-noise chamber with 6 layers wall structures of VAIS-PMT perfectly removes air-borne disturbances by air flow and acoustical noise.
|Sandard Dimension||610(W) X 730(L) X 895(H) [mm]|
|Platform Type||Granite (standard) / Optical breadboard (option)|
|Loadable Range||0 ~ 150kg (standard)|
|Support Frame||Pneumatic(compressed air) spring|
|Control DOFs||3 axis 6 DOFs (full active system)|
|Control Range||0.5 ~ 1,000 Hz|
|Control Type||Feedback & Floor Feed-Forward Control|
|Air pressure||over 0.5 MPa|
|Power Supply||AC 90 ~ 230V / 50 ~ 60Hz|
|Resonance range ( >1 Hz )||Not Existed|
|Isolation efficiency on frequency domain|
|2 Hz||-10dB (60% isolation)|
|5 Hz||-30dB (85% isolation)|
|10 Hz||-40dB (99% isolation)|
|20 Hz ~||-40dB (99% isolation)|
|Frequency||Noise Reduction||Frequency||Noise Reduction|
|63 Hz||14 dB||1000 Hz||41 dB|
|125 Hz||28 dB||2000 Hz||41 dB|
|250 Hz||29 dB||4000 Hz||42 dB|
|500 Hz||32 dB||8000 Hz||44 dB|
(1) Structure-borne noise (vibration) has comparatively longer wave length and stronger energy, which makes it especially important to isolate them.
(2) While air-borne vibration and acoustical vibration(noise) transmit smaller energy to the target instruments, they are transmtted directly to a microscope's measurement spot and greatly distort microscope image.
Air flow from nearby HVAC systems also greatly affects the microscope.
(3) VAIS-PMT single-handedly prevents floor vibrations, air-borne noises and air-flow for optimal nano-scale measurement.