CPI's extensive range of linear position sensors were first developed over 15 years ago to meet the challenging demands for large hydraulic cylinders and accumulators used in the harsh environments faced by the construction equipment and materials handling industries. Rather than rod style in-cylinder position sensors which were prone to repeated failure, CPI took the basic principles of draw wire sensors in a patented configuration that replaced fragile potentiometers and encoders with either LVDT or a short rod magnetostrictive transducers as the core sensing technology. This long-life and non-contacting design offers numerous advantages including significant improvements in protection for heavy shock and vibration conditions and reliable operation in extreme temperature ranges from -40 to over 120 0C. They can be located in-cylinder or externally mounted and find applications in many demanding positioning tasks beyond hydraulics. With absolute positioning and no need for homing on power-up, standard signal conditioning outputs include CAN Bus, analogue, and digital in single channel or redundant configurations. Models are available with full ATEX, IECEX and SIL2 approvals. CPI sensors are the only linear position sensors suitable for telescoping hydraulic cylinders up to 15 metres.
CPI's thermal switches are used for demanding military and commercial temperature control applications and are available in three primary electromechanical design categories: snap disk, bimetal, and rod and tube. Each type offers a differing sensitivity and temperature profile that suit a very wide range of harsh environment applications. The snap disk 'Snapstats' range uses a bimetallic snap disc that provides shock and vibration immunity and a broad temperature differential over an operating temperature range from around -18 to 148 0C. Available configurations include surface mount with or without probe, thread mount, clamp mount, hermetically sealed, and dual setpoint. The bimetal 'Plugstat' series are slow-make and -break devices which provide tight tolerance temperature sensing over a small range with a working range from approx. -18C to 345 0C. They are applied extensively in aircraft ECS, plastic extruders, wind turbines, and various military vehicle systems. The rod and tube design suits set-point temperature ranges from around -18C to 955 0C and are well proven in harsh environment applications such as aircraft engine overtemperature, refinery process control, and engine exhaust monitoring.
CPI manufactures an extensive range of waterproof switch products that as a minimum meet IP68 protection levels and for some tasks are completely long-term submersible. Characterised by the same high levels of durability and ruggedness of other CPI products, switch configurations include normally open, normally closed and SPDT with neoprene covers to MS39058 for military applications and Santoprene(TM) covers for industrial switching. Electromechanical design includes momentary, maintained contact, limit. ball types, plungers, rockers and more. Available as single components or combined in switch panels they offer long life endurance ratings as high as 5 million cycles and temperature ratings from -55 to 205 0C.
All CPI products can be adapted as custom designed specials for applications outside standard product offerings, and UL approvals are widely available.
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About Variohm EuroSensor
Variohm EuroSensor is a manufacturer, distributor and supply chain partner providing complete sales and application support across a comprehensive range of position, force, pressure, load, and temperature sensor technologies - for demanding measurement applications across industry, construction, agriculture, motorsports, research and more.
Variohm EuroSensor
Towcester
Northants NN12 6HP
Phone : +44 (0) 1327 351004
alison.moffatt@variohm.com
Variohm EuroSensor
Towcester
Northants NN12 6HP
Phone : +44 (0) 1327 351004
graham@variohm.com
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