Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Eddy current instrument characteristics
4.1 General characteristics
4.2 Electrical characteristics
5 Verification
5.1 General
5.2 Levels of verification
5.3 Verification procedure
5.4 Corrective actions
6 Measurement of the electrical characteristics of
the instrument
6.1 Measuring requirements
6.2 Generator unit
6.3 Input stage characteristics
6.4 Signal processing
6.5 Output
6.6 Digitisation
Annex A (informative) - Principle of frequency beat
method
Annex B (informative) - Method of measurement of the
linearity range between an output O and an
input I
Annex C (normative) - Alternative measurement of the
input impedance