The SOP400 Opto Eletronic Level Switches are used for level detection in liquids, independent of physical characteristics such as density, dielectric constant or the conductivity of the medium. The SOP400 provides an accurate, repeatable point level switch which can be mounted in any position, especially where space is limited. This unit is often the ideal solution for point level detection of all types of industrial and food grade oil products.

Opto Eletronic Level Switch

Power Supply: 9...32 Vdc or 5...12Vdc
Consumption: 15mA
Output: PNP (N/O) or NPN (N/O or N/C) open collector
Output Indication: LED ( Red )
Protection: Polarity Reversal / Electrical Surges / Short Circuit
Electrical Connection: Cable or M12 Connector
Class Protection: IP67 (M12) / IP67 (Cable)
Max Pressure: 20 Bar
Ambient IR limit (940nm): Max 10.000 Lux (ambient)
Work Temperature: - 40...+100°C (up to 135°C upon request)
Ambient Temperature: -25...+70°C
Repeatability: +/- 0.5mm
Hystereses: <1 mm
Response Time: 1s (Rising) / 50us (Falling) (Depending on viscosity)
Body Material: 316 S.S
Sensor Material: Borosilicate Glass
Sensor Length (L): 35mm (Standard) others upon request
Process Connection: ½” NPT or BSP (others upon request)

Documentation for download

  • Industrial Oils and Liquids detection
  • Sanitary process
  • Food and Drinks
  • Automotive


Sitron SOP430 Optical Level Switch test in oil

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