Proximity Instrumentation

Controls

Applications for Reed Switches, Reed & Hall Sensors

Automotive :
Where to find How it works
Carseat in case off accident airbag will not open if seat is not occupied
Seatbelt lock Reed Switch in seatbelt lock checks that seatbelt is firmly closed
Sunroof OPEN / CLOSED position control
Window lifter OPEN / CLOSED position control
Level control

Floating magnet actuates Reed Switch detecting
- breakfluid
- coolant
- water for windscreen washer


Domestic Appliances :
Where to find How it works
Microwave oven door lock control
Washing machine - door lock control
- position detection of drum (top loading machines)
- water level control
- weight sensor
Dishwasher - spray arm detection (machine stops if spray arm blocks)
- door lock control
- level control (washing liquid / brillant fluid / salt)
Vacuum cleaner airfilter saturation control
Refrigerator door lock control turns light ON /OFF
Coffee and Espresso
machines
water level detection
Ricecooker cover OPEN / CLOSED position control
Window shade UP / DOWN position control

Telecom :
Where to find How it works
Telephone ON / OFF hook switch
Mobile phone ON / OFF flip cover switch
Radio transmitter ON / OFF microphone switch
Modem current sensing Reed Relay

Measurement & Controls :
Where to find How it works
Flow meter Reed Switches, actuated by rotating magnet, monitors flow
Gas meter
Valva OPEN / CLOSED position control
Linear gears Position control
I / O cards Reed Relay arrays

Industry :
Where to find How it works
Pneumatic cylinder Piston with a small magnet is detected by an external Reed / Hall Sensor
Cam - Revolution counter
- Position control
Gears Position control
Elevator Position control
Flow meter Reed Switches, actuated by rotating magnet, monitors flow
Gas meter
Valva OPEN / CLOSED position control
Reed relay Reed Switch actuated by a coil

Others :
Where to find How it works
Speedometer Magnet mounted on spoke of a bike triggers Reed Switch
Anemometer Rotating magnet triggers Hall Switch
Current limiter If coil current exceeds limit reed switch Inside coil is actuated

Alarm Systems :
Where to find How it works
Burglar, alarm systems Doors and windows protected by Reed Sensors