Files
| Attachment | Size |
|---|---|
 DVIA-MB Borchure - Active Isolation System for Electron Microscopes | 6.48 MB |
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DVIA-MB is the ultimate base active vibration isolation platform for all commercial electron microscopes such as SEM and TEM. DVIA-MB provides the optimal environment, enabling electron microscopes to obtain high-resolution images of biological and non-biological specimens by reducing vibrations in the critical range of 1 - 5 Hz where the electron microscopes are extremely susceptible to the low frequency vibration.
DVIA-MB consists of four units of active vibration isolators in which the elements of air springs and active isolation technology are embedded. The integrated sensors and actuators effectively reduce the low frequency vibrations and starts to isolate vibrations from 0.5 Hz, achieving 90% vibration isolation at 2 Hz. The elements of air springs support payloads from 500 kg to 6000 kg and effectively reduces high frequency vibrations and, moreover, they lowers its natural frequency.
As per the images clearly above demonstrate, when low frequency vibrations disturb electron microscopes, it is critical to reduce these vibrations with DVIA-MB in order to obtain nano-scale resolution images.
The natural frequency of DVIA series is below 0.5 Hz, meaning that DVIA series effectively reduces low frequency vibrations in 1– 5 Hz, where passive isolation systems rather amplify the low frequency vibrations due to its higher natural frequency.
The resonant frequency of the active isolation systems is much lower than the passive isolation systems.
As the graphs above evidently shows, the active systems excels in controlling vibrations in 1-10 Hz range, where the passive systems amplify the low frequency vibrations rather than filtering them.
DVIA-MB is highly effective in isolating ultra-precision instruments from the low frequency vibrations where the precision instruments tend to be unstable and disruptive. Active vibration isolation starting at 0.5 Hz, DVIA-MB achieves in delivering 90% at 2 Hz and 99% at 10 Hz.
DVIA-MB uses the feedback control system to continuously detect vibrations disturbing an isolated payload base and instantaneously react to minimize the vibrations in real-time. The feed-forward system is employed in DVIA-MB to filter out floor vibrations in a predefined way.
Inertial sensors and electromagnetic actuators that are installed in the active vibration isolation systems detect and control vibrations in three translational degrees of motions ( X,Y and Z), and three rotational degrees of motions ( pitch,roll and yaw).
Technical Features
Model No. | DVIA-M1000 | DVIA-M3000 | DVIA-M6000 |
|---|---|---|---|
Dimensions (WxDxH) - Isolator Unit | 180 x 180 x 180 mm | 232 x 232 x180 mm | 308 x 308 x 180 |
Dimensions (WxDxH) - Platform | Customize to Fit | Customize to Fit | Customize to Fit |
Maximum Load Capacity | 500 -1700 kg | 1500 - 3500 kg | 3000 - 6000 kg |
Active Isolation Range | 0.5 - 100Hz | 0.5 - 100Hz | 0.5 - 100Hz |
Degrees of Freedom | 6 degrees | 6 degrees | 6 degrees |
Vibration Isolation Performance | ≥ 90% at 2 Hz / 99% at 10 Hz | ≥ 90% at 2 Hz / 99% at 10 Hz | ≥ 90% at 2 Hz / 99% at 10 Hz |
Settling Time | ≤0.3 sec* | ≤0.3 sec* | ≤0.3 sec* |
Input Voltage (V) | AC 80 - 260 V / 50 - 60 Hz | AC 80 - 260 V / 50 - 60 Hz | AC 80 - 260 V / 50 - 60 Hz |
Power Consumption (W) | Maximum 110 W. Below 50W in normal operation | Maximum 110 W. Below 50W in normal operation | Maximum 110 W. Below 50W in normal operation |
Operating Range - Temperature (°C) | 5 - 50 °C | 5 - 50 °C | 5 - 50 °C |
Operating Range - Humidity (%) | 20 - 90% | 20 - 90% | 20 - 90% |
Required Air Pressure | ≥5 kg/cm2 | ≥5 kg/cm2 | ≥5 kg/cm2 |
* 0.3 sec settling time is measured after 90% reduction of input. The settling time varies with several conditions, such as payload, force, natural frequency, etc...