Contents 



Preface 

 Introduction 



Chapter 1. 



1-1 



1-12. 



1-2. 



13. 

 14. 



15. 

 16. 



Measurements of 



Beta-, Gamma 



Mechanical Input Transducers 



Transducers for Linear Dimensions (Length or Thickness Gauges) 

 1-11. Resistive Systems 



(a) Contact on Both Sides 



(b) Contact on One Side . 

 Inductive Thickness Gauges 



(a) Reluctance-variation Gauges 



(b) Eddy-current Systems . 

 Capacitive Systems 

 Thickness Determination from 

 Electric Breakdown Voltage 

 Ultrasonic Method 

 Radiation Thickness Gauges (Alpha 

 X-ray Gauges) ... 



Transducers tor Displacement or Force 



1-21. Resistive Displacement Transducers 



(a) Slide-wire Resistors ..... 



(6) Spring Transducer ..... 



(c) Wire Strain Gauges ..... 



(d) Semiconducting Displacement Transducers 



(e) Electrolytic Displacement Transducers . . ■ 

 Inductive Displacement Transducers 



(a) Inductance and Reluctance-variation Transducers 



(b) Variable Differential Transformer 



(c) Eddy-current Displacement Transducers 



(d) Magnetoelastic or Magnetorestrictive Transducers 



(e) Synchros ....... 



(/) Induction Systems ..... 



1-22. 



v 



1 



/ 



7 

 7 

 9 

 11 

 12 

 13 

 14 



16 

 16 



17 

 23 

 24 

 24 

 30 

 31 

 37 

 42 

 44 

 44 

 48 

 53 

 56 

 60 

 62 



XI 



