CPI Thermals For Aircraft Fire Detection

The safety and redundancy requirements of modern aircraft are one of the many areas that drive the use of advanced mechanical thermal switches like CPI’s. It turns out that while flimsy sensors and microcontrollers are a fair solution to some non-critical monitoring apps, the heavy lifting of safe, no compromises, reliable temperature detection often leads system engineers to one of CPI’s three lines of thermal switches.

CPI switches have some of the most reliable and accurate thermal designs in the world, with ranges appropriate to everything from fixed Temperature Heat detection up to 1750F.  Our switches work in the avionics bay, or above a galley stove to detect runaway thermal conditions.

A Perfect Replacement for Fenwal Switches

A commonly used Fenwal switch is their Snap Action 08-84 Series which roughly aligns directly with the capability, temperature range and form factor of our PlugStat series of switches like the M1001. A short spec comparison quickly highlights the superiority of the CPI switch in terms of temperature range, set point accuracy, and electromechanical endurance. Our switch can be used in fire suppression systems in clean agents, carbon dioxide, inert gases, wet or dry chemical, or water. Switch design and construction of the CPI switch also provides extremely high vibration and shock resistance. Our Plugstat Thermal switches are hermetically sealed, available at any custom set temperature you want, and 100% factory tested.

These CPI Thermal Switches are available in a wide variety of activation temperatures. When the preset temperature is reached, a snap-acting bimetal disc mounted in the tip of the probe provides fast thermal response and rapid contact action. To ensure hermeticity, the probes feature welded, stainless steel construction with glass to metal seals.

For more information on Fenwal Switch replacements for your avionics thermal detection application, call a CPI Sales Engineer today or visit our website at: https://www.cpi-nj.com/