1.1
Measurement systems
1.1.1 Transducers
Of most interest are the physical properties and performance characteristics of a transducer. Some examples are given below:
| Property | Method of measurement |
| Strain | Strain gauge, a resistive transducer whose resistance changes with length. |
| Temperature | Resistance thermometer, thermocouple, thermister, thermopile. |
| Humidity | Resistance change of hygroscopic material. |
| Pressure | Movement of the end of a coiled tube under pressure. |
| Voltage | Moving coil in a magnetic field. |
| Radioactivity | Electrical pulses resulting from ionisation of gas at low pressure. |
| Magnetic field | Deflection of a current carrying wire. |
Performance characteristics
Get Newnes Interfacing Companion now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
