ISO INTERNATIONAL STANDARD 8042 First edition 1988-08-01 INTERNATIONALORGANIZATIONFORSTANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXKAYHAPOAHAAOPrAHM3AMRNOCTAHAAPTW3ALMM Shock and vibration measurements --- Characteristics to be specified for seismic pick-ups Mesuragedeschocsetdesvibrations--Caracteristiquesaspecifierpourlescapteurs sismiques Referencenumber ISO 8042:1988 (E) Copyright Intermational Organization for Standardization No r Not for Resale ISO 8042 : 1988 (E) Foreword Iso (the International Organization for Standardization) is a woridwide federation of national standards bodies (ISO member bodies). The work of preparing Internationai Standards is normally carried out through ISo technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. ISO col- laborates closely with the International Electrotechnical Commission (IEC) on all mat- ters of electrotechnical standardization. Draft Internationat Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 8042 was prepared by Technical Committee ISO/TC 108, Mechanical vibration and shock. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latest edition,unless otherwise stated. @ International Organization for Standardization, 1988 Printed in Switzerland dza without license from IHS Not for Resale INTERNATIONALSTANDARD ISO 8042 : 1988 (E) Shock and vibration measurements - Characteristics to be specified for seismic pick-ups 1 Scope and field of application 4.2 Type This International Standard iays down rules for the presen- The manufacturer shall state whether the output of the pick-up tation of important characteristicsforelectro-mechanical shock issubstantiallyproportional tothedisplacement,velocityorac- andvibrationpick-ups(seismicpick-ups),theelectrical outputs celeration of the vibration or shock input. ofwhichareknownfunctionsof theuniaxial,multiaxial or angularaccelerations,velocitiesordisplacementsofobjectsthe 4.3 Type of motion motions of which are being measured. The manufacturer shall indicate the nature of the motion to It is intended as a guide to instrument manufacturers for in- whichthepick-upwill respond,suchas dicating characteristics of their pick-ups and as a help to users - uniaxial; mance specifications. The intention is to ensure that the user receives an adequate description of the characteristics of any - multiaxial; particular pick-up. - angular. Throughout this International Standard, shock and vibration pick-ups will be referred to simply as "pick-ups". 4.4 Sensing element 2 References The type of sensing element shall be indicated, for example, as follows: Iso 2041, Vibration and shock -- Vocabulary. strain-sensitive resistance wire, bonded or unbonded; ISo 5348, Mechanical vibration and shock - Mechanical -- resistive potentiometer; mounting ofaccelerometers. - variable capacitance; ISo 5347,Methods for the calibration of vibration and shock pick-ups. -- variable inductance; - differential transformer; 3 Definitions - electromagnetic element; For the purposes of this International Standard, the definitions - piezoelectric element; given in ISO 2041 and ISO 5347 apply. -- electronic tube; 4 General information photoelectric element; 4.1 General - electrokinetic element; The information specified in 4.2 to 4.16 may be helpful to the - piezoresistive element; user of pick-ups. It is recommended that the manufacturer pro- -optical element; vide th