AS8579 Fluid Level Data Sheet
■Capacitive sensing is a widely used technology in fluid level sensing. It works on the principle of capacitance: charge accumulates in the gap between two sheets of metal, or 'electrodes' , when a voltage is applied to one electrode. The amount of charge which accumulates depends on a property, the 'permittivity' , of the material between the sheets.
■At the heart of the AS8579' s measurement system is a type of capacitive sensing technology called I/Q demodulation. This method measures the resistive as well as the capacitive element of a system' s impedance. The effect of this is that, unlike other methods for capacitive sensing, it works reliably even in difficult conditions, and is sensitive to small changes in capacitance.
●Key Features:
■High sensitivity up to 80 fF/LSB
■Additional shielding possibility implemented
■Wide measurement range from 2pF- 2000pF
■Compensation method via DC offset register
■10 independent sensing lines per sensor
■AEC-Q100 Grade 1 qualified
■ISO26262 certified – sensor achieving ASIL B
●Benefit / Value:
■Accurate capacitive measurement (seperation of resistive and capacitive information)
■Higher durability and lower system costs
■Enabler for safety critical applications
■Suitable for automotive applications
■Multi-channel measurement
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[ Gasoline tank of car ][ Automated coffee machines ][ Water evaporators & steamers ][ Heating systems & boilers ][ Washing machines ][ Steam irons ][ Juice squeezers ] |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2022/1/25 |
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239 KB |
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