Optoelectronic Switches from WIKA

Non-Contact Level Detection for Demanding Industrial Applications

Optoelectronic Switches from WIKAWIKA optoelectronic switches provide reliable, maintenance-free point level detection using infrared light rather than mechanical components. Designed for precision and durability, these switches excel in applications where traditional float or mechanical level switches struggle—such as aggressive media, tight spaces, or high switching frequencies. With compact designs and robust housings, WIKA optoelectronic switches are trusted across process industries for accurate liquid level monitoring.

Why WIKA?

What Makes WIKA Optoelectronic Switches Special

Non-Mechanical Reliability
Unlike float or reed switches, optoelectronic switches have no moving parts, eliminating mechanical failure and reducing downtime.

Excellent Media Compatibility
Well-suited for clear and opaque liquids, aggressive chemicals, and media where buildup or turbulence can affect mechanical sensors.

High Switching Accuracy
Optical sensing ensures precise, repeatable detection, even in applications requiring frequent switching or fast response times.

Compact, Robust Design
Small form factors allow installation in restricted spaces, while industrial-grade housings provide long-term durability.

WIKA Quality & Traceability
Manufactured to WIKA’s global quality standards, ensuring consistent performance, documentation, and long-term support.

Features

Product Features

How WIKA Optoelectronic Switches Work

WIKA optoelectronic switches use an infrared LED and receiver to detect the presence or absence of liquid. When the sensor tip is immersed, the light path changes due to refraction, triggering a precise switching signal—without moving parts or mechanical wear.

Key Features

  • Non-contact, wear-free operation
  • High repeatability and fast response times
  • Ideal for small tanks, sight glasses, and compact vessels
  • Reliable switching even with frequent on/off cycles
  • Long service life with minimal maintenance

Available Configurations

  • Point level detection for liquids
  • Flush-mounted or threaded process connections
  • Compact designs for tight installations
  • Electronic switching outputs compatible with industrial control systems

Applications

Typical Applications & Industries

Common Applications

  • Tank and reservoir level monitoring
  • Leak detection systems
  • Pump protection (dry-run prevention)
  • Overflow and minimum level alarms
  • Small vessels and transparent pipelines

Industries Served

  • Chemical processing
  • Water and wastewater treatment
  • Semiconductor manufacturing
  • Power generation
  • OEM equipment and skid systems
  • Pharmaceutical and laboratory systems

Q & A

Q&A Section with Expand/Collapse Icons

Optoelectronic Switches Q & A

    + What is the main advantage of an optoelectronic switch compared to a float switch?
Optoelectronic switches have no moving parts, which eliminates mechanical wear and significantly increases reliability in applications with frequent switching, vibration, or aggressive media.
    + Can WIKA optoelectronic switches work with aggressive or corrosive liquids?
Yes. These switches are well-suited for aggressive or corrosive media because the optical sensing principle does not rely on mechanical movement and minimizes exposure to wear.
    + Are optoelectronic switches suitable for small tanks or compact equipment?
Absolutely. Their compact size makes them ideal for small vessels, sight glasses, and OEM equipment where space is limited.
    + Do optoelectronic switches require calibration or regular maintenance?
No routine calibration is typically required. Since there are no moving components, maintenance needs are minimal compared to mechanical level switches.
    + How do I choose the right WIKA optoelectronic switch for my application?
Selection depends on media type, temperature, process connection, and electrical output requirements. Valin’s application engineers can help ensure proper selection and system compatibility.

Why Valin?

Why Buy from Valin

  • Application engineering support
  • Local inventory and fast delivery
  • Expert product selection assistance
  • One-stop source for WIKA instrumentation solutions

Talk to one of our process control experts today at (855) 737-4714 or fill out our online form to learn more.

 
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