IEC 62127-3-ed.2.0

Annotation of standard text IEC 62127-3-ed.2.0 :

IEC 62127-3:2022 specifies relevant hydrophone characteristics. This document is applicable to: - hydrophones employing piezoelectric sensor elements, designed to measure the pulsed and continuous wave ultrasonic fields generated by ultrasonic equipment; - hydrophones used for measurements made in water; - hydrophones with or without an associated pre-amplifier. IEC 62127-3:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition. a) The upper frequency limit of 40 MHz has been removed. b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities. c) Procedures to determine the effective hydrophone size have been changed according to the rationale outlined in Annex B. d) Requirements on the frequencies for which the effective hydrophone size shall be provided have been changed to achieve practicality for increased frequency bands. e) The new Annex B and Annex C have been added. f) Annex A has been updated to reflect the changes of the normative parts. LIEC 62127-3:2022 specifie les caracteristiques pertinentes des hydrophones. Le present document sapplique: - aux hydrophones qui utilisent des capteurs piezoelectriques concus pour mesurer les champs ultrasoniques a ondes par impulsions et entretenues generes par les appareils a ultrasons; - aux hydrophones utilises pour les mesurages realises dans leau; - aux hydrophones avec ou sans preamplificateur associe. LIEC 62127-3:2022 annule et remplace la premiere edition parue en 2007 et son amendement 1:2013. Cette edition constitue une revision technique. Cette edition inclut les modifications techniques majeures suivantes par rapport a ledition precedente. a) La limite de frequence superieure de 40 MHz a ete supprimee. b) Les definitions de la sensibilite de lhydrophone ont ete modifiees afin de reconnaitre les sensibilites comme des grandeurs a valeur complexe. c) Les procedures de determination de la taille efficace de lhydrophone ont ete modifiees conformement a la justification donnee a lAnnexe B. d) Les exigences relatives aux frequences pour lesquelles doit etre fournie la taille efficace de lhydrophone ont ete modifiees afin de tenir compte des bandes de frequences superieures. e) De nouvelles annexes ont ete ajoutees (Annexe B et Annexe C). f) LAnnexe A a ete mise a jour afin de refleter les modifications apportees aux parties normatives.