NPL provides a comprehensive range of calibration, measurement and consultancy services for hydrophones, radiation force balances and medical ultrasonic equipment. This equipment needs to meet the stringent requirements of testing for compliance with regulatory, safety and quality standards, and to provide manufacturers and users with tailored solutions for measuring acoustic output parameters at all stages of product development and manufacture.
Our unique range of hydrophones and beam-plotting tanks enable us to characterise ultrasound fields and materials in the frequency range 500 kHz to 60 MHz.
We provide industries, hospitals and research groups with calibration services for ultrasound power measurement devices and the measurement of ultrasonic output power itself, generated by customer systems ranging from prototype transducers to reference sources. Power measurement and calibration capability is provided covering the frequency range 0.5 to 20 MHz, and power levels 10 mW to 20 W.
K. A. Wear, A. Shah, A. M. Ivory and C. Baker, "Hydrophone Spatial Averaging Correction for Acoustic Exposure Measurements From Arrays—Part II: Validation for ARFI and Pulsed Doppler Waveforms," in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 68, no. 3, pp. 376-388, March 2021.
K. A. Wear, A. Shah and C. Baker, "Correction for Hydrophone Spatial Averaging Artifacts for Circular Sources," in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 67, no. 12, pp. 2674-2691, Dec. 2020.
Wear KA, Baker C, Miloro P. Directivity and Frequency-Dependent Effective Sensitive Element Size of Membrane Hydrophones: Theory Versus Experiment. IEEE Trans Ultrason Ferroelectr Freq Control. 2019;66(11):1723-1730.
Baêsso RM, Costa-Felix RPB, Miloro P, Zeqiri B. Ultrasonic parameter measurement as a means of assessing the quality of biodiesel production. Fuel 2019;241
A. M. Hurrell and S. Rajagopal, "The Practicalities of Obtaining and Using Hydrophone Calibration Data to Derive Pressure Waveforms," in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 64, no. 1, pp. 126-140, Jan. 2017.
Don’t see what you are looking for? Our diverse skill set enables us to provide bespoke solutions. Please contact us to discuss your requirements.
Our research and measurement solutions support innovation and product development. We work with companies to deliver business advantage and commercial success.
Contact our Customer Services team on +44 20 8943 7070