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  1. Capacitive level switch
  2. Solids and liquids level detection ( high or low level)
  3. suitable for use in: conductive or non-conductive liquids such as water, acids, oil, kerosene,…….fine or bulk solids such as flour, feeds, seeds, corn,…..
  4. Not affected by dust or contaminations.

Operating temperature: -20 to 85C

Storage temperature: -20 to 85C

Max. pressure: 5 Bar

Probe length: up to 300mm

Probe material: PVC or PTFE isolated

Installation: 1" or 1.5"

Power supply: 24Vac/dc, 60Vdc,110Vac or 220Vac

Output: change over relay

SM640 is suitable for use with liquids and solids it’s a very accurate sensing device and the most common level detecting technique available.

The sensor works with conductive and non-conductive liquids


  • Oil, gasoline, water, acid, etc.
  • fine and coarse grained solids


  • Simple calibration steps
  • Accurate level sensing system
  • Maintenance free device
  • Capable of sensing solids and liquids
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