Hi-Endurance Switching, Sensing
& Linear Position Sensors
& Linear Position Sensors
Whether for flight or for ground programs, we offer a variety of products that have been qualified to the demanding requirements of the aerospace and military industries. CPI has supplied reliable thermal switching solutions to various major aircraft manufacturers worldwide for applications in ECS, APUs, compressors, galley equipment, and many more. Our most common aerospace designs have been qualified per RTCA DO-160C and MIL-STD-810.
Due to their compact size and low profile, our Waterproof Momentary Switches are a popular choice for push-to-talk (PTT), laser sighting, and field night vision applications. These same switches mounted in our robust bracket & actuator designs have provided solutions for tank turrets (M1 Abrams), engine kickdown (HMMWV), and various limit switch applications for the HMET programs. Our most demanding application yet, cab position indication for the LTAS chassis, employs our J4 Plunger Switch capable of withstanding high vibration. These units still function with the plunger encased in hardened sand and/or ice.
Contact movement is achieved via the different expansion rates of two metals fused together. This is a slow-make-and-break device, which provides very close tolerance temperature sensing, with a small differential.
Set point range: 0°F-650°F (-17.8°C-343°C)
Our high-performance plunger switches use the same patented “double seal” ball carrier design as the J4 ball switch. CPI offers tremendous flexibility in mounting and details of actuator parameters. These ultra-rugged plunger switches can be configured for the most demanding applications with a wide variety of contact options. Both custom and off the shelf, versions are available.
CPI’s X1 thermal switch is being increasingly used by both American and European avionics manufacturers and integrators as their thermal switch of choice for spot detection of overtemperature conditions in systems throughout the aircraft. Recent integrations include FAA approval as a Fenwal replacement on Gulfstream jets, use in the De Havilland “Twin Otter” aircraft, and use by specialty aircraft manufacturer Diamond Aircraft in Europe to name a few.
