IEC TR 62781:2012
Current
The latest, up-to-date edition.
Ultrasonics - Conditioning of water for ultrasonic measurements
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English
18-09-2012
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Dissolved gases
4 Dissolved ionic content
5 Biological content
6 Suspended particulate content
7 Water temperature
8 Examples of low-cost water
treatment systems
Bibliography
IEC/TR 62781:2012(E), which is a technical report, is applicable to all measurements of ultrasonic fields where water is the transmission medium. Water provides an inexpensive and readily available medium with characteristic acoustic impedance comparable to biological tissue. However, basic tap water is far from optimum for ultrasonic measurement as it contains many dissolved, absorbed and suspended contaminants. Measurements can be affected in many ways by these impurities. This technical aims to provide a unified source to establish a water treatment process for ultrasonic measurements. The quality and treatment methods for water used within a radiation force balance (RFB) may be different from that required for hydrophone based acoustic measurements. Chemical based methods of water treatment (e.g. algaecides) may be appropriate for these applications. However, in this document, chemical means are noted but appropriately discouraged for acoustic pressure/intensity measurements. This Technical Report describes methods for:
- degassing water to be used in ultrasonic measurements;
- to decrease the ionic content of water to be used in ultrasonic measurements;
- to decrease the biological content of water to be used in ultrasonic measurements; and
- to reduce the suspended particulate content of water to be used in ultrasonic measurements.
| DevelopmentNote |
Stability date: 2020. (09/2017)
|
| DocumentType |
Technical Report
|
| Pages |
21
|
| PublisherName |
International Electrotechnical Committee
|
| Status |
Current
|
| Standards | Relationship |
| NEN NPR IEC/TR 62781 : 2012 | Identical |
| PD IEC/TS 62556:2014 | Ultrasonics. Field characterization. Specification and measurement of field parameters for high intensity therapeutic ultrasound (HITU) transducers and systems |
| CEI EN 62555 : 2014 | ULTRASONICS - POWER MEASUREMENT - HIGH INTENSITY THERAPEUTIC ULTRASOUND (HITU) TRANSDUCERS AND SYSTEMS |
| CEI EN 61161 : 2014 | ULTRASONICS - POWER MEASUREMENT - RADIATION FORCE BALANCES AND PERFORMANCE REQUIREMENTS |
| BS EN 62127-1 : 2007 | ULTRASONICS - HYDROPHONES - PART 1: MEASUREMENT AND CHARACTERIZATION OF MEDICAL ULTRASONIC FIELDS UP TO 40 MHZ |
| BS EN 62127-2 : 2007 | ULTRASONICS - HYDROPHONES - PART 2: CALIBRATION FOR ULTRASONIC FIELDS UP TO 40 MHZ |
| EN 61161:2013 | Ultrasonics - Power measurement - Radiation force balances and performance requirements |
| EN 61689:2013 | Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz |
| BS EN 61391-1 : 2006 | ULTRASONICS - PULSE-ECHO SCANNERS - PART 1: TECHNIQUES FOR CALIBRATING SPATIAL MEASUREMENT SYSTEMS AND MEASUREMENT OF SYSTEM POINT-SPREAD FUNCTION RESPONSE |
| CEI EN 61689 : 2013 | ULTRASONICS - PHYSIOTHERAPY SYSTEMS - FIELD SPECIFICATIONS AND METHODS OF MEASUREMENT IN THE FREQUENCY RANGE 0,5 MHZ TO 5 MHZ |
| PD IEC/TS 62462:2017 | Ultrasonics. Output test. Guidance for the maintenance of ultrasound physiotherapy systems |
| BS EN 61689:2013 | Ultrasonics. Physiotherapy systems. Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz |
| IEC TS 62556:2014 | Ultrasonics - Field characterization - Specification and measurement of field parameters for high intensity therapeutic ultrasound (HITU) transducers and systems |
| I.S. EN 62555:2014 | ULTRASONICS - POWER MEASUREMENT - HIGH INTENSITY THERAPEUTIC ULTRASOUND (HITU) TRANSDUCERS AND SYSTEMS |
| I.S. EN 62127-1:2007 | ULTRASONICS - HYDROPHONES - PART 1: MEASUREMENT AND CHARACTERIZATION OF MEDICAL ULTRASONIC FIELDS UP TO 40 MHZ (IEC 62127-1:2007 (EQV)) |
| IEC 62127-2:2007+AMD1:2013+AMD2:2017 CSV | Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz |
| I.S. EN 61391-1:2006 | ULTRASONICS - PULSE-ECHO SCANNERS - PART 1: TECHNIQUES FOR CALIBRATING SPATIAL MEASUREMENT SYSTEMS AND MEASUREMENT OF SYSTEM POINT-SPREAD FUNCTION RESPONSE |
| BS EN 61161:2013 | Ultrasonics. Power measurement. Radiation force balances and performance requirements |
| BS EN 60601-2-62:2015 | Medical electrical equipment Particular requirements for the basic safety and essential performance of high intensity therapeutic ultrasound (HITU) equipment |
| BS EN 62555:2014 | Ultrasonics. Power measurement. High intensity therapeutic ultrasound (HITU) transducers and systems |
| I.S. EN 61161:2013 | ULTRASONICS - POWER MEASUREMENT - RADIATION FORCE BALANCES AND PERFORMANCE REQUIREMENTS (IEC 61161:2013 (EQV)) |
| CSA C22.2 No. 60601-2-62 : 2015 | MEDICAL ELECTRICAL EQUIPMENT - PART 2-62: PARTICULAR REQUIREMENTS FOR THE BASIC SAFETY AND ESSENTIAL PERFORMANCE OF HIGH INTENSITY THERAPEUTIC ULTRASOUND (HITU) EQUIPMENT |
| I.S. EN 62127-2:2007 | ULTRASONICS - HYDROPHONES - PART 2: CALIBRATION FOR ULTRASONIC FIELDS UP TO 40 MHZ |
| IEC TS 62462:2007 | Ultrasonics - Output Test - Guide for the maintenance of ultrasound physiotherapy systems |
| IEC 61161:2013 | Ultrasonics - Power measurement - Radiation force balances and performance requirements |
| IEC 61391-1:2006+AMD1:2017 CSV | Ultrasonics - Pulse-echo scanners - Part 1: Techniques for calibrating spatial measurement systems and measurement of point-spread function response |
| IEC 62127-1:2007+AMD1:2013 CSV | Ultrasonics - Hydrophones - Part 1: Measurement and characterizationof medical ultrasonic fields up to 40 MHz |
| IEC 60601-2-62:2013 | Medical electrical equipment - Part 2-62: Particular requirements for the basic safety and essential performance of high intensity therapeutic ultrasound (HITU) equipment |
| IEC 62555:2013 | Ultrasonics - Power measurement - High intensity therapeutic ultrasound (HITU) transducers and systems |
| 15/30330344 DC : 0 | BS EN 61391-1+A1 - ULTRASONICS - PULSE-ECHO SCANNERS - PART 1: TECHNIQUES FOR CALIBRATING SPATIAL MEASUREMENT SYSTEMS AND MEASUREMENT OF POINT-SPREAD FUNCTION RESPONSE |
| I.S. EN 61689:2013 | ULTRASONICS - PHYSIOTHERAPY SYSTEMS - FIELD SPECIFICATIONS AND METHODS OF MEASUREMENT IN THE FREQUENCY RANGE 0,5 MHZ TO 5 MHZ (IEC 61689:2013 (EQV)) |
| I.S. EN 60601-2-62:2015 | MEDICAL ELECTRICAL EQUIPMENT - PART 2-62: PARTICULAR REQUIREMENTS FOR THE BASIC SAFETY AND ESSENTIAL PERFORMANCE OF HIGH INTENSITY THERAPEUTIC ULTRASOUND (HITU) EQUIPMENT |
| EN 62127-2:2007/A2:2017 | ULTRASONICS - HYDROPHONES - PART 2: CALIBRATION FOR ULTRASONIC FIELDS UP TO 40 MHZ |
| EN 62127-1:2007/A1:2013 | ULTRASONICS - HYDROPHONES - PART 1: MEASUREMENT AND CHARACTERIZATION OF MEDICAL ULTRASONIC FIELDS UP TO 40 MHZ (IEC 62127-1:2007/A1:2013) |
| IEC 61689:2013 | Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz |
| EN 61391-1:2006/A1:2017 | ULTRASONICS - PULSE-ECHO SCANNERS - PART 1: TECHNIQUES FOR CALIBRATING SPATIAL MEASUREMENT SYSTEMS AND MEASUREMENT OF SYSTEM POINT-SPREAD FUNCTION RESPONSE (IEC 61391-1:2006/A1:2017) |
| EN 62555:2014 | Ultrasonics - Power measurement - High intensity therapeutic ultrasound (HITU) transducers and systems |
| EN 60601-2-62:2015 | Medical electrical equipment - Part 2-62: Particular requirements for the basic safety and essential performance of high intensity therapeutic ultrasound (HITU) equipment |
| IEC 62127-1:2007+AMD1:2013 CSV | Ultrasonics - Hydrophones - Part 1: Measurement and characterizationof medical ultrasonic fields up to 40 MHz |
| IEC 61161:2013 | Ultrasonics - Power measurement - Radiation force balances and performance requirements |
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