In the metrology and testing center, the profilometer is a key equipment for achieving high-precision surface morphology measurement. However, such precision instruments are extremely sensitive to environmental vibrations, and even minimal disturbances can cause measurement data to deviate. How to choose a suitable shock absorber for the profilometer and ensure its stable operation is a focus of concern for many technicians. This article will provide you with a practical guide starting from the selection points and practical applications.
The vertical resolution of profilometers, especially white light interferometric profilometers, can reach sub nanometer levels. During measurement, vibrations from the ground, surrounding equipment, and even air flow can directly interfere with the stability of interference fringes, resulting in poor repeatability of measurement results.Contour instrument shock absorber tableThe core function is to isolate these external vibrations and create a working environment for the instrument that is close to 'static'.
The HERZ series active shock absorption system provided by Younikon Technology Co., Ltd. (Yiying Technology) is a solution designed specifically for such needs. The AVI-200 series precision shock resistant worktable covers an active isolation range of 1-200Hz and can reduce the vibration transmission rate beyond 10Hz to below -35dB, effectively ensuring the accuracy of the profilometer in measurement and detection.
The common shock absorbers on the market are divided into passive and active types, and the difference between the two needs to be clarified before selection.
Passive shock absorbers usually rely on materials such as rubber and air springs to absorb vibrations, and have a simple structure, but their isolation effect on low-frequency vibrations is limited. Active shock absorbers, such as the HERZ AVI series, integrate piezoelectric sensors and drivers internally. The system will detect input vibration in real-time and dynamically generate a reverse force to counteract it, achieving six degrees of freedom isolation. For the metrology and testing center, the active contour instrument damping platform can more effectively handle low-frequency disturbances from the ground or surrounding equipment, and is an important choice to improve measurement stability.
When selecting, it is recommended to focus on the following parameters and functions:
1. Isolation frequency range
The environmental vibrations in the metrology and testing center are often concentrated in the low-frequency range. The ideal contour instrument damping table should have an active isolation range covering 1Hz to 200Hz. For example, the HERZ AVI-200 series has an active isolation range of 1-200Hz and a passive isolation range covering over 200Hz, which can provide effective isolation against interference at different frequencies.
2. Response speed and recovery time
When external vibrations or human touch occur, the shock absorber platform needs to quickly restore stability. When selecting, attention can be paid to the response time indicators of the product, such as the 5-20 millisecond response time of the AVI series, which can ensure that the profiler quickly returns to a stable state after being disturbed, reduce waiting time, and improve detection efficiency.
3. Load capacity and adaptability
Different models of profilometers have significant differences in size and weight. If the metrology and testing center is equipped with multiple devices, it is necessary to choose an expandable or modular shock absorption solution. For example, HERZ AVI-200 WORKSTATION allows for the addition of modules within a certain range to support larger instrument loads and meet the installation requirements of different specifications of profilometers.
4. Installation convenience and maintenance
The equipment in the metrology and testing center is dense, and the installation process should not be too complicated. Like the AVI series active shock absorber platform, it is easy to install, does not require a pneumatic source, and does not require special time settings. It can be quickly deployed in place and can be used continuously for many years without failure, reducing the burden of later maintenance.
Taking the common KLA Profilm3D white light interference profilometer in metrology and testing centers as an example, it is highly sensitive to vibration when measuring step height, surface roughness, and three-dimensional morphology. After installing it on the HERZ AVI-200 WORKSTATION active shock absorber platform, the measured data showed a significant improvement in measurement repeatability, especially for step height measurements at the 0.1nm level, where the results were more stable and reliable.
This improvement is due to the real-time feedback control of the active profiler shock absorber platform. It suppresses mechanical resonance through an internal feedback loop, avoiding interference fringe jitter caused by vibration, thereby ensuring the accuracy and consistency of each scan data. For metrology and testing centers, this means more reliable calibration capabilities and more authoritative testing reports.
Choosing a contour instrument shock absorber table for the metrology and testing center is essentially a "certainty" investment for precision measurement. Active damping technology, with its effective isolation of low-frequency vibrations, fast response speed, and modular flexible configuration, has become an ideal choice for ensuring high-precision operation of profilometers. The HERZ series active shock absorption system provided by Younikon Technology Co., Ltd. (Yiying Technology) has proven its stable value in numerous measurement and testing scenarios.
If you are seeking a reliable solution for the stable operation of a profilometer, you may want to delve into the active technology of the profilometer shock absorber. From selection to application, every rigorous consideration will ultimately be reflected in every precise measurement data.
About Us: Younikon Technology Co., Ltd. (Yiying Technology) has been focusing on precision thin film measurement and laboratory environment optimization since its establishment, and is the general agent of Filmetrics film thickness gauge in China. We are committed to providing professional products and attentive services to safeguard your precision instruments.
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