| 摘要 |
A monitoring device is for monitoring changes in at least one characteristic of a coating, and uses an electromagnetic field generator, a magnetic field sensor positioned within the magnetic field of the field generator and a signal generator for generating an alternating signal of a selected frequency for driving the magnetic field generator. The selected frequency causes resonant fields to be generated within a coating sample to be monitored, thereby altering the magnetic field detected by the magnetic field sensor. The magnetic field sensor output is monitored over time, and this enables changes in at least one characteristic of the sample to be monitored over time. This device detects magnetic resonance within a sample as a tool for analysing the characteristics of the sample. In this way, the curing characteristics of the sample can be evaluated by monitoring the concentration of the selected component over time.
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