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All Categories > Liquid Level Switches and Liquid Level Sensors > Optical Level Switch and Single Point Conductivity Sensors 
 

Optical Level Switch and Single Point Conductivity Sensors

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Single-Point-Probe-Conductivity-Sensor

Conductivity Level Sensor for Food Applications

The M3850 is a small, low-cost conductivity level sensor designed for food applications in metal-walled tanks or vessels.  Installation is simple, and multiple units can be wire together in phase so that multiple tank level points can be detected. All materials are food-grade, and the contours of the insulator shell meet NSF requirements for cleaning.

While a conductivity switch and a float-type switch perform the same functions, the advantage of no moving parts is that the conductivity switch can be used in several environments that would cause a float to stick or to not operate at all. The probe is mounted with an insulator shell for sensing in such liquids. With no moving parts, switch operation of the M3850 is not ...


Madison-Optical-Switches

Optical Level Switches - Polysulfone or Brass Housing

Madison Company offers an extensive line of standard optical point level detection switches for use in non-coating liquids.

Basic range of polysulfone optical sensors ideal for commercial and industrial applications:

  • -40 to 257°F (-40 to 125°C)
  • Solid-state technology, micro-processor compatible
  • Reverse polarity, over voltage, short circuit and transient protected

These compact optical switches incorporate a phototransistor that provides a digital output indicating the presence or absence of liquid. The sensor tip houses the phototransistor. The refractive index is changed when covered by liquid, thus indicating the level.

There are several wetted materials and operating ...


Madison-Optical-Switches

Optical Level Switches - Stainless Steel Housing

High-performance, high-reliability Optical Level Switches are ideal for high or low temperatures and suitable for aggressive environments, with a wide variety of optional terminations :

  • Shock resistant
  • Chemical resistant
  • Optional high switching currents
  • -13 to 284°F (-25 to 140°C)
  • Additional power sinking
  • Stainless steel housing
  • CE approved

These compact optical switches incorporate a phototransistor that provides a digital output indicating the presence or absence of liquid. The sensor tip houses the phototransistor. The refractive index is changed when covered by liquid, thus indicating the level.

There are several wetted materials and operating ...

Madison-Optical-Switches

Optical Level Switches - High Power/High Temperature

Madison Company offers an extensive line of standard optical point level detection switches for use in non-coating liquids.

Utilizes the basic LLE or LLC series sensor with enhanced electronic capability to switch at higher power or operate at higher temperatures :

  • Polysulfone or metal housing
  • Optoschmitt trigger with digital output, compatible with TTL/CMOS

These compact optical switches incorporate a phototransistor that provides a digital output indicating the presence or absence of liquid. The sensor tip houses the phototransistor. The refractive index is changed when covered by liquid, thus indicating the level.

There are several wetted materials and operating ranges to choose from ...

Madison-Optical-Switches

Optical Level Switches - Harsh Environments

Optical Level Switches designed for harsh environments with extremes in temperature, pressure, vibration and shock. Sealed to meet IP67 in a stainless steel housing :

  • Phototransistor trigger
  • Digital output, solid-state technology
  • Output : TTL 200 mA, sinking
  • Fast response

These compact optical switches incorporate a phototransistor that provides a digital output indicating the presence or absence of liquid. The sensor tip houses the phototransistor. The refractive index is changed when covered by liquid, thus indicating the level.

There are several wetted materials and operating ranges to choose from within Madison's optical switch series, including high-temperature performance ...

Madison-Optical-Switches

Optical Level Switches - Compact/Economical

A low-cost family of Optical Level Switches offering high reliability. Ideal for medical, appliance and commercial applications :

  • Compact size
  • Voltage output
  • Pre-wired

These compact optical switches incorporate a phototransistor that provides a digital output indicating the presence or absence of liquid. The sensor tip houses the phototransistor. The refractive index is changed when covered by liquid, thus indicating the level.

There are several wetted materials and operating ranges to choose from within Madison's optical switch series, including high-temperature performance options.

As with all Madison products, engineered configurations for your unique requirements can be ...

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