Non-contact capacitance liquid level meter

Non-contact capacitance liquid level meter

  • CN 101,782,418 A
  • Filed: 03/11/2010
  • Published: 07/21/2010
  • Est. Priority Date: 03/11/2010
  • Status: Active Application
First Claim
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1. contactless high-accuracy capacitor liquid level gauge, it is characterized in that, comprise at least two capacitive transducers, i.e. first capacitive transducer (D1) and second capacitive transducer (D2), one end of first capacitive transducer (D1) and second capacitive transducer (D2) connects forwarder (4), the other end is located at respectively in first sleeve pipe (T1) and second sleeve pipe (T2) of bottom sealing, first sleeve pipe (T1) and second sleeve pipe (T2) stretch in the container (1), and first capacitive transducer (D1) is as the measuring junction capacitor C M, second capacitive transducer (D2) is as reference end capacitor C R, by a fixing reference edge capacitor C RDetect a measuring junction capacitor C MRelative capacitance change Δ

  • C M=C M-C RWhen survey medium liquid level changes between first sleeve pipe (T1) and second sleeve pipe (T2), be inserted in the variation that will produce electric capacity between first capacitive transducer (D1) of first sleeve pipe (T1) and second sleeve pipe (T2) lining and second capacitive transducer (D2), process transmitter (4) carries out conversion process to the capacitance signal of first capacitive transducer (D1) and second capacitive transducer (D2), get final product the electric signal of outputting standard, thereby accurately measure liquid level.

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