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Improved and Automated Primary Ultrasonic Power Measurement Setup at CSIR-NPL, India

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Abstract

Ultrasonic power generated by an ultrasonic transducer must be measured and declared for the ultimate safety of patients. According to IEC-61161 radiation force balance is internationally recommended primary method for measurement of total, time averaged ultrasonic power radiated by transducer. In a manual RFB system, the output of microbalance is recorded manually at no radiation force and after transducer excitation. Manual technique suffers from various errors, such as overshoot due to momentum of target, disturbance due to small tilt in target and buoyancy change of target. The developed automated system provides scope to visualize these effects and enables us to considerably reduce effects of above sources and hence improves uncertainty. In this article developmental details and the functionality of an improved automated system is described.

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Notes

  1. For HAM-A datasheet, Precision acoustics, see www.acoustics.co.uk.

  2. See for Mettler—XP56 microbalance details, www.mt.com.

  3. For laser displacement sensor, Panasonic model: HL-G112-A, www.clrwtr.com.

  4. See for Fluke multimeter model 8846A, www.fluke.com.

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Acknowledgments

The authors (particularly P. K. Dubey) would like to thank the Director, CSIR-National Physical Laboratory, for providing the necessary facilities and financial assistance for the improvement in the primary ultrasonic power measurement system. Thanks are also due for the financial support provided to one of the authors (Shashank Singh) under CSIR research intern scheme.

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Authors and Affiliations

  1. Acoustics, Ultrasonics and Vibration Standards, CSIR-National Physical Laboratory, Dr K S Krishnan Marg, New Delhi, 110012, India

    P. K. Dubey, Anshul Jain & Shashank Singh

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  1. P. K. Dubey
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  2. Anshul Jain
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  3. Shashank Singh
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Correspondence to P. K. Dubey.

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Dubey, P.K., Jain, A. & Singh, S. Improved and Automated Primary Ultrasonic Power Measurement Setup at CSIR-NPL, India. MAPAN 30, 231–237 (2015). https://doi.org/10.1007/s12647-015-0150-4

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  • DOI: https://doi.org/10.1007/s12647-015-0150-4

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