Brake fluid pressure sensor

Brake fluid pressure sensor is a normal component in a hydraulic braking system. The sensor is a type of pressure switch which is used shows and alerts a fault in the braking system. The fault could be lack of hydraulic fluid, low brake fluid in the reservoir, broken hydraulic line, bad master brake cylinder. The sensor is used to detect pressure differentials in the hydraulic system. If the car alerts a fault in the hydraulic system and the car checks out good, the sensor itself may have failed. The brake fluid pressure sensor has an input port to measure the hydraulic braking pressure and an electrical connector output for a wire connection for feeding the warning light. There can be brake failures that do not trip the brake fluid pressure sensor into a fault mode. Brake fluid pressure sensor is used in the Anti-lock braking system-ABS systems. Many new vehicles have a Anti-lock braking system-ABS fault light. ABS fault lights comes on with unexpected wheel lock from the ABS system, but could also include low fluid in the reservoir. ^[1][2][3][4]

New accident avoidance technologies system also use brake fluid pressure sensors ^[5]

Note: Many large heavy vehicles, like trucks, particularly those having multiple trailers use air brakes, that use air pressure sensors.

Examples

• 
  Mechanical Pressure Switch with integrated connector
• 
  Mechanical Pressure Switch with Plug-in connector

See also

• Hydropneumatic
• Pascal's law

References