YY/T 0865.2-2018Ultrasonics—Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz (English PDF)
超声 水听器 第2部分：40MHz以下超声场用水听器的校准
This is a limited preview
Buy now to download the full PDF (71 pages)
Need quotation for your management?
Get a formal quotation for YY/T 0865.2-2018 in 30 minutes.
Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
December 20, 2018
Implementation date
January 1, 2020
Scope
YY/T 0865.2-2018 is the English-translated version of 超声 水听器 第2部分：40MHz以下超声场用水听器的校准.
YY/T 0865.2-2018 is the Chinese standard "Ultrasonics—Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz". Its scope clause reads: This part of YY/T 0865 specifies. --- Absolute calibration method of hydrophone; --- Relative (comparative) calibration method for hydrophones.
Various relative and absolute calibration methods within the frequency range covered by this section are proposed and listed for reference. This section applies to. --- Hydrophone used in water and in the frequency range below 40MHz.
Note 1. In the field of medical ultrasound, although some physiotherapy medical applications working in the frequency range of 40kHz to 100kHz are constantly developing, imaging diagnostics The main frequency range remains above 2MHz.
It has recently been confirmed that even in the latter case (frequency above 2MHz), the hydrophone The response of the lower frequency band will also affect the measurement of key acoustic parameters [1]. --- A hydrophone made of circular sensitive elements, designed to measure the pulse wave or continuous wave sound field generated by ultrasonic equipment Note 2.
Some hydrophones may have non-circular sensitive elements, such as a slight deviation from the circular structure due to the electrode structure, or vice versa.
The sensing element is actually square. Even so, the provisions in this section are still valid, but special attention should be paid to the directional response and the passage of each rotation axis The effective radius of the sensitive element. --- Hydrophone with or without hydrophone preamplifier.
Found what you need?
Document preview — YY/T 0865.2-2018
National Standard of the People's Republic of China
- ICS
- 11.040.50
- Classification
- C 41
Issued by: National Medical Products Administration of the People's Republic of China
Contents
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols
- 4 Symbol Table
- 5 Overview of calibration steps
- 6 General requirements for hydrophone calibration systems
- 7 Electrical requirements
- 8 Preparation of hydrophones
- 9 Free field reciprocal calibration
- 10 Plane scanning free field calibration
- 11 Free-field calibration using optical interferometry
- 12 Calibration using comparison method of standard hydrophone
- Appendix A (informative appendix) Evaluation of measurement uncertainty for calibrating hydrophones in free field
- Appendix B (informative appendix) Characteristics of PVDF polymer sensors in high sound intensity ultrasonic fields
- Appendix C (informative appendix) Amendment of electrical load
- Appendix D (informative appendix) absolute calibration of hydrophones using the planar scanning method
- Appendix E (Informative) Water Characteristics
- Appendix F (informative appendix) Absolute calibration of hydrophones using optical interferometry below 40 MHz
- Appendix G (Informative Appendix) Waveform Concept
- Appendix H (Informative Appendix) Requirements and Brief Review of Time Delay Spectroscopy
- Appendix I (informative appendix) Determination of hydrophone phase response
- Appendix J (informative appendix) Considerations on the maximum size of hydrophone sensitive components
- Appendix K (informative appendix) Reciprocal calibration method for two transducers
- References
1 Scope
This part of YY/T 0865 specifies.
--- Absolute calibration method of hydrophone;
--- Relative (comparative) calibration method for hydrophones.
Various relative and absolute calibration methods within the frequency range covered by this section are proposed and listed for reference.
This section applies to.
--- Hydrophone used in water and in the frequency range below 40MHz.
Note 1. In the field of medical ultrasound, although some physiotherapy medical applications working in the frequency range of 40kHz to 100kHz are constantly developing, imaging diagnostics
The main frequency range remains above 2MHz. It has recently been confirmed that even in the latter case (frequency above 2MHz), the hydrophone
The response of the lower frequency band will also affect the measurement of key acoustic parameters [1].
--- A hydrophone made of circular sensitive elements, designed to measure the pulse wave or continuous wave sound field generated by ultrasonic equipment
Note 2. Some hydrophones may have non-circular sensitive elements, such as a slight deviation from the circular structure due to the electrode structure, or vice versa.
The sensing element is actually square. Even so, the provisions in this section are still valid, but special attention should be paid to the directional response and the passage of each rotation axis
The effective radius of the sensitive element.
--- Hydrophone with or without hydrophone preamplifier.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
IEC 60050-801 International Electrotechnical Vocabulary-Part
801. Acousticsandelectroacoustics)
IEC 60565..2006 Calibration of underwater acoustic hydrophones in the frequency range of 0.01 Hz to 1 MHz (Underwateracoustics-
Hydrophones-Calibrationinthefrequencyrange0.01Hzto1MHz)
IEC 61161 Acoustic Ultrasonic Power Measurement Radiation Force Balance Method and Performance Requirements (Ultrasonics-Power measurement-Radiationforcebalancesandperformancerequirements)
IEC 61828 Definition and measurement method of emission field characteristics of acoustic focused ultrasonic transducers (Ultrasonics-Focusingtrans- ducers-Definitionsandmeasurementmethodsforthetransmittedfields)
IEC 62127-1..2007 Ultrasonic hydrophones Part 1. Measurement and characterization of medical ultrasound fields below 40 MHz (Ul- trasonics-Hydrophones-Part 1. Measurementandcharacterizationofmedicalultrasonicfieldsupto
40MHz)
Amendment 1..2013
IEC 62127-3 Ultrasonic hydrophone Part 3. Characteristics of hydrophones for ultrasonic fields below 40 MHz (Ultrasonics-Hy- drophones-Part 3. Propertiesofhydrophonesforultrasonicfieldsupto40MHz) […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 71 pages — is available in the English PDF.
Referenced standards
Normative references
IEC 60050-801 · IEC 60565 · IEC 61161 · IEC 61828 · IEC 62127-1 · IEC 62127-3
Similar standards
How to Download YY/T 0865.2-2018
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
YY/T 0865.3-2013 — Ultrasonics—Hydrophones - Part 3: Properties of hydrophones for ultrasonic fields up to 40 MHz
YY/T 0865.1-2011 — Ultrasonic—Hydrophone - Part 1: Measurement and characterization of medical ultrasonic fields up to 40 MHz
YY/T 0865.1-2024 — Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields
Secure payment via Stripe
Payments accepted
YY/T 0865.2-2018
$950.00