Permanent magnets are applied in many electromagnetic transducers, electric machines and measurement instruments. Nowadays the new generation sensors, especially position sensors, are fitted with permanent magnets. In position sensors, they generally use permanent magnet for monitoring rotor position and rotary speed. 🔔 This magnet is for Door/Window Contact Sensors that are installed on doors, windows, and many other objects that open and close. The magnet itself mounts near the sensor and enables sensors to send signals to security control panels when moved away from or closer to the sensor. The present invention concerns devices with probes for measuring magnetic potentials. Potential differences between two points of a material in a magnetic field are measured with a plurality of Hall probes arranged on a curved line which connects the points. The voltage of each Hall probe is connected with the summation point of an operational amplifier whose output voltage is proportional to. Within a sensor, the role of the permanent magnet is to provide a magnetic field in an air gap. This field can be constant and extremely precise, or vary in magnitude and direction. The most common types of permanent magnets used in sensors are sintered samarium cobalt, sintered neodymium iron boron, and bonded magnets of various types.
Introduction
When an automobile is completed at the factory, it is ready to be driven. However, the vehicle may sit in a completion lot for several day or weeks awaiting transportation. The vehicle is then transported either by truck all over the country or even sent overseas on a ship. Once the vehicle arrives at its final destination it may sit for an extended period of time. The entire process could add up to several months for which the vehicle has been sitting idle prior to being sold. During that idle period, if the vehicle’s battery was connected it would have undergone small leakage currents that exist in any car. These leakage currents would drain the battery, leaving the new owner with a car that won’t start. MEDER designers working with automotive engineers have solved these leakage current issues by using a magnetic Reed Sensor…Sensor Magnets Magnetic mounting offers the most convenient method of temporary sensor installation for route-based measurements and data collection. IMI Sensors magnetic mounting bases feature rare-earth magnet elements to achieve high attraction forces to the test structure.
Features
Sensor Magnetic Pickup
Sensor Magnetic Switch
- Cylindrical hole and screw fastening mounting
- Contacts dynamically tested
- Magnet and Reed Sensor are isolated and have no physical contact by typically having the Reed Sensor module mounted beneath the car windshield and the magnet is manually positioned over the module to accurately detect the magnet and deactivate the battery
- Surface mount and through hole packages available
- The magnet is not affected by its environment
- The Reed Sensor operates reliably between -50°C and 150°C
- The Reed Switch used in the Reed Sensor is hermetically sealed and is therefore not sensitive to rough, wet environments
- Tens of millions of reliable operations