Main Menu
- Home
- Product Finder
- Calibration Systems
- Calibration Services
- Digital Sensing
- Industrial Vibration Calibration
- Modal and Vibration Testing
- Non-Destructive Testing
- Sound & Vibration Rental Program
- Learn
- About Us
- Contact Us
The Laser Primary Accelerometer Calibration System offers world class uncertainties in vibration calibration. The Laser Primary Model 9155D-575 option allows metrologists to perform primary calibration of vibration sensors with extremely low measurement uncertainty, meeting the performance requirements specified in ISO 16063-11.
|
The system seamlessly integrates with the Accelerometer Calibration Workstation Model 9155D, allowing for both primary calibrations using laser interferometer and secondary calibrations using the system’s reference standard accelerometer in a back-to-back comparison configuration, as specified in ISO 16063-21.
| 9155D-575 Option | |
|---|---|
| Frequency Range | 0.1 Hz – 20 kHz |
| Acceleration Level – g | 0.1 – 10 |
| Velocity Level – ips (m/sec) | 0.05 – 5 (1.27 – 127) |
| Laser Interferometer Type | He-Ne, dual pass, homodyne plain mirror Michelson interferometer |
| Standards Compliance | ISO 16063-11 |
| Required Shaker Option | 9155D-831 |
| Expected Overall Uncertainty | |
| 0.5 ≤ f ≤ 10 Hz | 0.3% [1] |
| 5 Hz | 1.0% [2] |
| 5 Hz ≤ f ≤ 100 Hz | 0.5% [2] |
| 100 Hz & 159 Hz | 0.2% [2] |
| 159 Hz ≤ f ≤ 1000 Hz | 0.5% [2] |
| 1k Hz ≤ f ≤ 5k Hz | 0.7% [2] |
| 5k Hz ≤ f ≤ 15k Hz | 1.5% [2] |
| 15k Hz ≤ f ≤ 20k Hz | 2.0% [2] |
| Typical Phase Uncertainty | |
| 0.5 Hz ≤ f ≤ 10 Hz [3] – Phase | 0.7% |
| 5 Hz ≤ f ≤ 100 Hz – Degree | 0.7% |
| 100 Hz ≤ f ≤ 5k Hz – Degree | 0.7% |
| 5k Hz ≤ f ≤ 20k Hz – Degree | 1.3% |
[1] DAQ with air bearing low frequency shaker
[2] DAQ with primary laser reference air bearing shaker
[3] Using long stroke low frequency shaker
For more articles, videos, and Tech Talks, visit our Education Portal
The system employs a Michelson interferometer to measure the displacement of the calibration platform. The signal is directly demodulated from the in-phase and quadrature-phase components of the laser doppler signal. The result is a primary calibration based upon a physical constant, the wavelength of a He-Ne laser.
When selecting the 9155D-575 Laser Primary option, the 9155D831 Air Bearing Shaker option is required. This option configures the 9155 system to include the K394B31 Air Bearing Shaker System, providing superior calibration performance compared to traditional flexure-based electromechanical calibration shakers. Using this Air Bearing Shaker, calibrations can be performed up to 20 kHz and transverse motion can be effectively eliminated meeting the recommendations specified in ISO 16063-11 and 16063-21, greatly reducing measurement uncertainties.