SA Series Capacitance Level Switch

รหัสสินค้า : SA Series

The Fine-tek Capacitance Switch for liquids and solids can be used in mediums such as liquids, pastes, syrups, powders, granules, flakes and chips.

หมวดหมู่ : Fine-Tek



SA Series Capacitance Level Switch

The Fine-tek Capacitance Switch for liquids and solids can be used in mediums such as liquids, pastes, syrups, powders, granules, flakes and chips. It’s broad application and rugged build makes it a highly versatile across all industries. Capacitance switches rely on electrical capacitance theory (the ability of a medium to store electrical energy). When an electrical circuit has two separated conductive plates, the space between the plates acts as a capacitor and stores the electrical energy. Mediums have differing conductivity and dielectric constants which affects their energy sstorage capability. When the switch comes into contact with the medium, it can detect a change in the surroundings and this actuates the switch accordingly. Materials with high conductivity or high dielectric constants such as water tend to have high capacitance. The opposite applies for low conductive substances such as popcorn, wax or air. Thus the switch works well in mediums with reasonably high dielectric constants or conductive solutions..


  • Ground level test function available
  • Max. operating temperature: 800°C
  • Sensitivity and time delay adjustable



  • PStandard Type (SA110 & SA111 A/B/C) Suitable for general use.
  • Hi-Temp Type (SA120 & SA128 A/B/C) Suitable for high temperature environment.
  • Anti-Corrosion Type (SA130 & SA132 A/B/C) Suitable for corrosive environment.
  • Remote Probe Type (SA140 A/B/C) For use with vibrator equipped with tank.
  • Wire-Probe Type (SA150 A/B/C) Suitable for silo or large-size tank.
  • Plate-Probe Type (SA160 A/B/C) Suitable for granules and at lower position of tank side.
  • Explosion-Proof Type (SA270 ~ SA279) Ex dia II C T4~T6, DIP A21 TA,T3~T6
  • Explosion-Proof Type (SA370 ~ SA378) Ex ia IIC T3~T6 Equipped with SA-75U signal conditioner can be used in hazardous areas.
  • Anti-Static Type (SA180 & SA181 A/B/C) Suitable for electrostatic environment (It won't be damaged by the electrostatic discharge)

DOWNLOAD CATALOG :  SA Series Capacitance Level Switch


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SE Series

The SE series operating principle is simple. A unit is usually located through a bin wall at the top, middle or low level of a bin. During normal operation (no material present) a synchronous motor rotates the paddle at 1 RPM. When this paddle rotation is impeded by material, surroanding the paddle, motor will stall and cause the Micro switch to change state. (indicating an alarm or control) Product Introduction

FA/FB Series

The FA/FB Series is a cable float level switch product line constructed from a variety of chemical resistant materials. These are durable, low-cost, simple and easy-to-use float level switches equipped with either a microswitch, reed switch or mercury switch output.

SC Series

The Finetek vibrating probe switch is highly versatile and can be used for most almost any bulk solid application.

SIS Sanitary

Used for high, low position alarm in production process tank or pipelines.The compact design to facilitate carrying and transporting, and can be quickly installed even in the area of narrow space or difficult operation.

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