Factory Automation • Instrumentation • Level Switches

Level Switches

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  • Allen-Bradley, a Rockwell Automation Brand

    Allen-Bradley manufactures the 840 model float switches for heavy-duty industrial control applications. These switches open and close contacts in response to changes in liquid level and can be used in a variety of applications.

  • Ameritrol, Inc.

    Ameritrol manufactures a variety of liquid level switches including three series of models; the XL Series, SL Series and LM Sereis. These switches are designed to meet the most critical level detection applications in a variety of conditions for a broad range of industries.

  • Gems Sensors & Controls

    Gems Sensors & Controls manufactures level switch products including electro-optic liquid level switches, float type level switches, and proximity and pressure switches. The company's switches are for use in a variety of fluids.

  • Cole-Parmer

    Cole Parmer manufactures a family of liquid level float switches. Products include standard switches, hinged float switches, bent stem switches, and bottle level switches. The company also offers multi-point ultrasonic level switches, a noncontact proximity switch, and self-sealing float switches.


  • Automation Products Group, Inc. (APG SENSORS)

    APG manufactures float liquid level switches in a variety of sizes and configurations. Products include cable suspended float level sensors, magnetic float level sensors and miniature liquid level float switches.

  • Babbitt International, Inc.

    Babbitt International Inc. manufactures a variety of point level switches including low-cost, full-featured, dual-point, and multi-point senors. The switches are used for liquid and bulk solid applications, and have no moving parts. The company also offers a series of MLS-4EX multi-point, float level switches used for sensing fluid levels.

  • Dwyer Instruments, Inc.

    Dwyer manufactures a variety of models and series of level switches including liquid level float control switches, a cable float switch, multi-station and miniature multi-station switches, and a free-floating level switch.

  • Endress+Hauser

    Endress Hauser manufactures a range of level measurement instruments including vibrating level switches for liquids and solids.

  • FLO-CORP (Flow Line Options Corp.)

    Flow Line Options manufactures a group of ultrasonic level switches. Products include non-contact, multi-point, vibration, high-temp float, buoyancy, leak detection and capacitance level switches. The majority of switches are best suited for use in various types of liquids.

  • Fluid Components International

    Fluid Components International manufactures three series of thermal level switches for temperature monitoring, multi-point level monitoring, and other applications associated with industrial process measurement and automation.

  • Harwil

    Harwil Corp. manufactures 11 models of liquid level switches for use in a variety of physical, thermal and chemical operating environments. Some level switches are available with protective boots for use in high, particle-contaminated environments.


  • Innovative Components

    Innovative Components manufactures float-type, liquid level switches in three categories: vertical, horizontal and special. The company's vertical switches can be mounted in the top or bottom of a tank, while horizontal switches are used when the top of a tank is not accessible.

  • Innovative Solutions, LLC

    Innovative Solutions manufactures float-type level switches including multi-level vertical mount, single-point horizontal mount, and single vertical mount switches. A number of the company's switch models are intended for use in hazardous locations.

  • Madison Co.

    Madison manufactures liquid-level, single and multi-point float switches that measure tank levels in various application environments. The company also offers a number of liquid level sensors and an optical level switch.

  • Sensor Technics

    Sensor Technics manufactures three series of optical liquid level switches that feature single-point liquid level detction, no moving parts, fast response, and basic, ditigal or transistor output.

  • Sierra Instruments

    Sierra Instruments manufactures liquid level switches that have a response time of 0.1 to one second, and an operating temperature range of -100F to +390F.

  • SOR, Inc.

    SOR Inc. manufactures float and displacer operated mechnical level switches, and also produces a series of mechnical level switches that are a less exprensive version of traditional chambered switches.

  • Strain Measurement Devices Fluid Controls

    Strain Measurement Devices manufactures float level switches including multi-level, vertical, and horizontal switches in a variety of metals and plastics. The company also produces temperature level switches and ultrasonic level switches.


  • Thomas Products, Ltd., Flow Switch Div.

    Thomas Products manufactures a variety of liquid level switches including multi-level indicator, side mounted, single level or bottom mounted switches. The company's level switches come in bronze, plastic, PVC and stainless steel, and have a maximum operating pressure that ranges from 50 PSI to 750 PSI.

  • Whitman Controls Corporation

    Whitman Control Corp. manufactures liquid level switches that are utilized for monitoring drinking water levels. The company's level switches are also used in the oil and gas industries.