This critical component within a pneumatic braking system monitors the force exerted by compressed air. Operating as a sensor, it is designed to activate or deactivate an electrical circuit when a predetermined pressure threshold is reached. An example would be its role in illuminating a dashboard indicator light when the compressed air level falls below a safe operating minimum.
Its functionality is essential for safe operation and regulatory compliance in vehicles equipped with pneumatic braking. Proper functioning helps prevent system failures that could lead to accidents. Historically, these devices have evolved from simple mechanical pressure gauges to sophisticated electronic sensors, improving accuracy and reliability. This evolution has significantly contributed to enhanced safety standards in heavy-duty vehicles and industrial machinery.