At 1 Hz, typical values are 1 m/s2 to 2 m/s2 r.m.s. acceleration or 0,1 m/s to 0,3 m/s r.m.s. velocity as per ISO 16063-21. So, it doesn't meet the requirements!
The statement within ISO 16063-21 that you are referencing is found within the “Uncertainty of measurement section”. Specifically, that statement regarding amplitudes at 1 Hz is found within the section that details the calibration requirements for the reference accelerometer used in a calibration system. It is part of a larger section discussing realistic amplitudes for electrodynamic vibration exciters and says “When measurements are performed at the lowest frequencies, the limiting factor is normally displacement. At 1 Hz, typical values for long-stroke vibrators are 1 m/s2 to 2 m/s2 r.m.s. acceleration or 0,1 m/s to 0,3 m/s r.m.s. velocity.” In short, if one wishes to achieve the “attainable uncertainties” noted in the table that closes the section, the recommended course of action is to use a long-stroke shaker to calibrate the reference accelerometer within the system. Since the 9210D is not a long-stroke shaker, one cannot use this shaker to calibrate the reference accelerometer that is part of a calibration system and expect to achieve the uncertainties stated in the standard. However, we do utilize a transfer standard calibrated on a long-stroke shaker to calibrate the 9210D before shipment. To briefly summarize, the relevant section of the ISO 16063-21 standard is providing guidelines on how to calibrate the reference accelerometer within a calibration system. The standard is not recommending that all low frequency calibrations occur at 1 m/s2 at 1 Hz.
Hello, thank you for your interest in the Portable Vibration Calibrator. The PVC used in this demonstration, Model 9210D, offers a maximum amplitude of 2 g pk. Portable Vibration Calibrator Model 9110D offers a maximum amplitude of 20 g pk. Actual amplitude depends on sensor mass. Please reach out to our team if you have further questions by filling out the form found here: www.modalshop.com/industrial-vibration/pages/contact-an-expert
Thank you for your interest in the Portable Vibration Calibrator Model 9210D. Please contact us at sales@modalshop.com for information on pricing. To learn more, please visit the web page www.modalshop.com/industrial-vibration/products/portable-vibration-calibrators/9210D-low-frequency-calibrator.
Dear friend. I came to this video trying to use calibration to prove a motionless Earth. Does the calibration calculate vs error against the 1k mph spin? Ty. Only genuine informational inquisition.
Dear friend, how to calibrate a seatpad acelerometer on this shaker? tks
At 1 Hz, typical values are 1 m/s2 to 2 m/s2 r.m.s. acceleration or 0,1 m/s to 0,3 m/s
r.m.s. velocity as per ISO 16063-21. So, it doesn't meet the requirements!
The statement within ISO 16063-21 that you are referencing is found within the “Uncertainty of measurement section”. Specifically, that statement regarding amplitudes at 1 Hz is found within the section that details the calibration requirements for the reference accelerometer used in a calibration system. It is part of a larger section discussing realistic amplitudes for electrodynamic vibration exciters and says “When measurements are performed at the lowest frequencies, the limiting factor is normally displacement. At 1 Hz, typical values for long-stroke vibrators are 1 m/s2 to 2 m/s2 r.m.s. acceleration or 0,1 m/s to 0,3 m/s r.m.s. velocity.”
In short, if one wishes to achieve the “attainable uncertainties” noted in the table that closes the section, the recommended course of action is to use a long-stroke shaker to calibrate the reference accelerometer within the system. Since the 9210D is not a long-stroke shaker, one cannot use this shaker to calibrate the reference accelerometer that is part of a calibration system and expect to achieve the uncertainties stated in the standard. However, we do utilize a transfer standard calibrated on a long-stroke shaker to calibrate the 9210D before shipment.
To briefly summarize, the relevant section of the ISO 16063-21 standard is providing guidelines on how to calibrate the reference accelerometer within a calibration system. The standard is not recommending that all low frequency calibrations occur at 1 m/s2 at 1 Hz.
Dear friend how to simulate G/pk to plc my range is 0 to 20 g/pk?
Hello, thank you for your interest in the Portable Vibration Calibrator. The PVC used in this demonstration, Model 9210D, offers a maximum amplitude of 2 g pk. Portable Vibration Calibrator Model 9110D offers a maximum amplitude of 20 g pk. Actual amplitude depends on sensor mass. Please reach out to our team if you have further questions by filling out the form found here: www.modalshop.com/industrial-vibration/pages/contact-an-expert
How much is the price of this instruments?
Thank you for your interest in the Portable Vibration Calibrator Model 9210D. Please contact us at sales@modalshop.com for information on pricing. To learn more, please visit the web page www.modalshop.com/industrial-vibration/products/portable-vibration-calibrators/9210D-low-frequency-calibrator.
Dear friend. I came to this video trying to use calibration to prove a motionless Earth. Does the calibration calculate vs error against the 1k mph spin? Ty. Only genuine informational inquisition.