Physics · Transducers and Sensors
A variation in the ambient humidity causes a variation in the resistance of a certain humidity-sensing element. This element usually consists of a mixture of:
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- 1a hygroscopic salt, for example, lithium chloride, and nickel on an insulating substrate between metal electrodes
- 2a hygroscopic salt, for example, lithium chloride, and silicon on an insulating substrate between metal electrodes
- 3a hygroscopic salt, for example, lithium hydroxide, and aluminium on an insulating substrate between metal electrodes
- 4a hygroscopic salt, for example, lithium chloride, and carbon on an insulating substrate between metal electrodes✓
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a hygroscopic salt, for example, lithium chloride, and carbon on an insulating substrate between metal electrodes
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