Abstract
When used for measuring amplitudes of vibration, the dial gauge was found to have two major errors, one occurring at low frequencies, the other appearing at high frequencies. The low frequency error is caused by the weakness of the hairspring which takes up backlash in the mechanism. When the critical frequency, at which the inertia of the parts overcomes the hairspring torque is exceeded, a constant error equal to the backlash appears in the gauge reading. The high frequency error is produced by jumping of the gauge finger. By suitable installation of the gauge the jumping can be made audible to indicate the approach to the upper limit of accuracy. As the error is small for a safe range beyond this point, the audible indication provides a convenient warning. The high frequency error is postponed by using a stronger gauge spring, and by increasing the initial compression in the spring.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.