IEC TR 62331:2005

Pulsed field magnetometry

Reviews methods for measuring magnetically hard materials using pulsed field magnetometers. The methods of measurement of the magnetic properties of magnetically hard materials have been specified in IEC 60404-5 for closed magnetic circuits and in IEC 60404-7 for open magnetic circuits. The measurement result of the magnetic properties of magnetically hard materials at elevated temperatures is given in IEC 61807. Pulsed field magnetometers have been developed to provide rapid measurement facilities to match high speed production rates with 100 % quality control. The object of this report is to describe the principles and practical implications of pulsed field magnetometry in order to enable the full potential of the technique to be considered, including its application using small and large magnets of varying geometries, to various magnetic field strengths and frequencies.

General Information

• Status: Published
• Publication Date: 22-Feb-2005
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.030 - Magnetic materials
• Technical Committee: TC 68 - Magnetic alloys and steels
• Drafting Committee: WG 5 - TC 68/WG 5
• Current Stage: PPUB - Publication issued
• Start Date: 15-May-2005
• Completion Date: 23-Feb-2005

Standards Content (Sample)

TECHNICAL IEC


REPORT TR 62331



First edition
2005-02

Pulsed field magnetometry
Reference number
IEC/TR 62331:2005(E)

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TECHNICAL IEC


REPORT TR 62331





First edition
2005-02


Pulsed field magnetometry
 IEC 2005  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
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– 2 – TR 62331  IEC:2005(E)
CONTENTS
FOREWORD .4
INTRODUCTION .6

1 Scope and object.7
2 Normative references .7
3 Pulsed field magnetometer (PFM).7
3.1 General principles .8
3.2 Size of test specimen .10
4 Field generator.10
4.1 General .10
4.2 Power supply.10
4.3 Magnetizing solenoid.14
5 Polarization and magnetic field strength sensors (pick-up coils) .14
5.1 General .14
5.2 The polarization sensor (J coil).15
5.3 The magnetic field strength sensor (H coil) .16
6 Transient instrumentation and digitizing hardware.16
6.1 General .
...