Trying to find a sensor that will function on the underbelly of an automobile where ice, snow, oil, dirt, grime, very high and very low temperatures may exist at any given time represents a very difficult objective. The muffler system alone may have temperatures on part of its system in the several hundred degrees Celcius range. Catalytic converters on the muffler system have a valve that must have its position sensed in order to automatically adjust the fuel mixture minimizing exhaust fumes. Auto designers have turned to Standex Electronics’s Reed Sensors…
Cylindrical panel mount and screw fastening mounting
High temperature plastic and teflon leads used
Large sensing distances possible
Magnet and reed sensor are isolated and have no physical contact by typically having the magnet mounted on the valve in the catalytic converter and the reed sensor mounted and positioned to detect the end limit position(s)
Tens of millions of reliable operations
The permanent magnet is not affected by its environment
The reed switch never comes in contact with the actual movement of the piston
The reed switch used in the reed sensor is hermetically sealed and is therefore not sensitive to rough, wet, oily dirty environments that clearly exist on the body of the car which is exposed to the pavement
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