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  • Linear Position Sensors
      • Harsh Environments / LVDT-based

        Intrinsic Safety Rated Sensors
        SL2000-6000 Series Sensors are available with ATEX/IECEX/SIL2 ratings

        • Telescoping Hydraulic Cylinders
        • Piston Accumulators
        • Offshore/Onshore Drilling and Mining
        • Strokes of 10M, 12M, 14M, 16M, 30M
        Learn More
        LVDT Based Hydraulic Cylinder/Position Accumulator Sensors
        • Hardened Draw Wire for Internal Mount
        • Up to 1 meter Stroke Length
        • External Mounting Capable
        • Small Form Factor
        Learn More
      • Magnetostrictive / Long Stroke

        SUBSEA Rated Draw Wire Position Sensor System
        Subsea rated draw wire linear position sensor
        For Hydraulic Cylinders/Piston Accumulators

        ∙ Prevco enclosure rated for 3,000M submersion
        ∙ Seacon or teledyne interconnects available
        ∙ BOP, motion compensation, subsea actuators/accumulators
        ∙ Stroke to 10M, 12M, 14M,16M 30M
        Learn More
        Sensors For Long Stroke and Telescoping Hydraulics
        linear position sensor
        Our SL1500 Linear Position Sensors supports stroke lengths up to 15 meters including telescoping cylinders, and can be completely immersed in hydraulic fluid or mounted externally. Learn More
  • Waterproof Switches
      • Plunger and Ball Switches

        Plunger Switches
        Borrowing the same patented seal design as our J4-Ball Switches, our plungers can be customized with heat sinks and mounting specifications, and are IP68 rated. Learn More
        Ball Switches
        CPI Ball Switches see duty in critical military and industrial applications such as closure sensors for doors, hatches and valves. All stainless steel and double sealed for reliable actuation over a long life. Learn More
      • Momentary and Limit Switches

        Momentary Switches
        Our pendant style waterproof momentary contact switches are totally submersible and are designed to preserve seal integrity during activation over a long life. Learn More
        Limit Switches
        CPI Limit Switches are truly waterproof: not water resistant, or “splash proof”. Made of high grade stainless and designed for maximum electromechanical endurance. Learn More
      • Maintained Contact Switches and Waterproof Switch Panels

        Maintained Contact Switches
        These sealed, pendant style switches provide force adjustable tactile contact, ideal for use in power cycling applications in harsh duty environments. Learn More
        Waterproof Switch Panels
        With an operating temperature range of -50F to 221F our panel configuration has excellent resistance to both high and low temperatures, acids, alkalies, salt spray, sand, dust and fungus. Learn More
  • Thermal Switches
      • Snap Stat (0F–300F)

        Snap Stat (0F–300F)
        Using a precisely engineered bimetal snap disc, we actuate a miniature microswitch through a double snap action. Multiple mounting options available. Learn More
      • Plug Stat (0F-650F)

        Plug Stat (0F-650F)
        Contact movement in the PlugStat is achieved by controlling the different expansion rates of 2 fused metals providing tight tolerances and a small differential. Learn More
      • Rod & Tube (0F – 1750F)

        Rod & Tube (0F – 1750F)
        Ideal for use in galley’s or furnace controls to sense or control combustion. Very high temperature sensing with very rapid response time. Learn More
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Home››Blog››2019

Yearly Archives: 2019

2019 The Year In Review

December 28, 2019 Mac StuhlerCompany News, General, Linear Position Sensors, Waterproof SwitchesMac Stuhler
2019 The Year In Review

As 2019 comes to a close, the team at CPI like many industrial businesses around the world, are inclined to review not only our own progress and well-being, but the progress of our industry (Electro-mechanical Switches and Sensors), related industries, and in some ways the

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For Crane Safety, The Sky is the Limit Switch

December 11, 2019 Mac StuhlerBlogMac Stuhler
For Crane Safety, The Sky is the Limit Switch


For Crane & Lift Manufacturers and Integrators - CPI Safety Limit Switches and Sensors

The types and sizes of cranes used in the world vary enormously, from small hoists that can be mounted on your truck bed, to telescoping hydraulic crane systems rising hundreds of

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Sensors for Outrigger Systems on Work Trucks

November 7, 2019 John CrozierBlogJohn Crozier
Sensors for Outrigger Systems on Work Trucks

Outrigger support systems are a critical part of the safety proposition on all kinds of commercial vehicles and work trucks. A short list includes:

  • Bucket Loader trucks that carry servicemen to the top of the telephone poleOutrigger limit switches</p> <a href=Read More...

CPI Thermals Help Young Pilots, Fly Safe

October 25, 2019 John CrozierThermal Switcheshigh temperature thermal switchJohn Crozier
CPI Thermals Help Young Pilots, Fly Safe

Embry Riddle Aeronautical University has long been a staple of aviation education across the United States. Formed in 1925, It is the largest accredited university system specializing in aviation and aerospace. It has multiple locations with its primary campus residing in Daytona, Florida. One of the

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Weatherproof Switches, More Than Just Waterproof.

October 12, 2019 John CrozierBlog, Micro Switches, Momentary Switches, Pendant Switches, Waterproof SwitchesJohn Crozier
Weatherproof Switches, More Than Just Waterproof.

In the world of industrial grade weatherproof switches, you have to worry about more than just water mixing with your electrons. Mac Stuhler, Vice President of Business Development for CPI, puts it this way. “We learned a long time ago that manufacturers were buying our

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Take the Plunge with a CPI Plunger Switch!

September 28, 2019 Mac Stuhlerelectromechanical switches, Momentary Switches, Pendant Switches, Plunger Switches, Switch Panels, Waterproof SwitchesMac Stuhler
Take the Plunge with a CPI Plunger Switch!

Lets face it folks, sometimes it just takes a plunger switch. Whether your application is mechanically or physically activated, the tactile feel, and extended actuator of a plunger switch may be the only real solution for your application. For engineers looking at a harsh duty, wet,

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Panel Mounted Switches Save You Time and Money

September 18, 2019 Mac StuhlerSwitch Panels, Waterproof SwitchesMac Stuhler
Panel Mounted Switches Save You Time and Money

While most manufacturers are familiar with our line of waterproof switches, and the hundreds of part numbers in our waterproof limit switch line, many don’t realize that our switches can be specified in a subassembly, ie a stainless steel panel, custom built for your form

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When Sensors Make no Sense

August 28, 2019 Mac StuhlerThermal SwitchesMac Stuhler
When Sensors Make no Sense

Thermal switches were originally designed to be reliable, standalone, systems that encompassed both a sensing element, and a switch. At a chosen set-point these thermocouple devices would reliably close or open a contact allowing for critical systems to be protected or activated. They were

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Long Stroke Draw Wire Hydraulic Position Sensor Overview

August 10, 2019 Mac StuhlerDraw Wire Position Sensing, Draw Wire Sensor, Linear Position SensorsMac Stuhler
Long Stroke Draw Wire Hydraulic Position Sensor Overview

Its interesting to look at sensor manufacturer’s talk about the “long stroke” version of their hydraulic position sensors. They go on about how their amazing sensors can actually operate on stroke lengths of up to 1.2 meters in some cases! These sensors constitute a variety

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Hardened Electro-Mechanical Switches for Military Vehicle Applications

July 21, 2019 Mac StuhlerBlog, Limit Switches, Military Switch Applications, Waterproof SwitchesMilitary Grade SwitchesMac Stuhler
Hardened Electro-Mechanical Switches for Military Vehicle Applications

For over 70 years, CPI has been providing thermal and waterproof switches to the military & law enforcement industries in a wide variety of applications. There are a few major reasons the military comes to us for their toughest switch applications.

  • All CPI switch products

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Recent Posts
  • CPI 12v Switches For Demanding Applications

    18 Jan 2021

    One of the most common applications for CPI switches is when they are configured as in 12v systems as safety

  • CPI is Getting in the Neighborhood of Proximity Switches

    10 Jul 2020

    In many applications for moving mechanical parts and assemblies, it is important to know when a piece of machinery gets

  • Why the Military Trusts CPI Switches

    23 Jun 2020

    Despite the economic roller coaster driving procurement and buying challenges around the globe, it turns out the defense of the

  • CPI Thermals Take the Heat in Military Vehicles.

    15 May 2020

    While change often comes slowly in the vast military industrial complex, there’s often good reason for that. That’s at least

  • The SL6000 Subsea Draw Wire Breaks the 100 Ft Barrier

    25 Apr 2020

    Engineering Marvel – The CPI SL6000 30 Meter Hardened Linear Position Sensor Since the introduction of our SL series hardened

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From The Blog
  • CPI 12v Switches For Demanding Applications

    18 Jan 2021

    CPI 12v Switches For Demanding Applications
  • CPI Plugstat Thermal Switches – Getting There Slowly

    5 Jan 2021

    CPI Plugstat Thermal Switches – Getting There Slowly
  • CPI Thermals Pick up Slack in Aerospace Aftermarket.

    14 Sep 2020

    CPI Thermals Pick up Slack in Aerospace Aftermarket.
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