WP-W141 New Type Solenoid Magnetic Field Measuring Instrument Introduction: It is an important experiment in college physics experiment syllabus to measure the magnetic field distribution in an energized solenoid with Hall element. The new solenoid magnetic field measurement experimental instrument is a new teaching instrument designed and improved under the guidance and help of the Physical Experiment Teaching Center of Fudan University. The instrument uses advanced integrated linear Hall elements to measure the weak magnetic field in the energized solenoid, which solves the problems of low sensitivity of ordinary Hall elements, residual voltage interference and unstable output caused by solenoid temperature rise, so it can accurately measure the magnetic field distribution of the energized solenoid, Understand and master the principle and method of magnetic field measurement with integrated linear Hall element, and learn how to measure the sensitivity of Hall element. In consideration of the need for durability of the teaching experimental instrument, the power supply and sensor of the instrument also have protective devices. This instrument has rich physical content, reasonable structure design, reliable device, strong intuition, stable and reliable data, and is a high-quality teaching instrument for college physics experiments. It can be used for the basic physics experiment of college, technical secondary school and other students, sensor experiment of the course of "sensor principle", and classroom demonstration experiment. Experiment items: 1. Measure the sensitivity of the Hall sensor and verify that the output potential difference of the Hall sensor is proportional to the magnetic induction in the solenoid. 2. Measure the relationship between the magnetic induction intensity and the position in the solenoid, and obtain the magnetic induction intensity of the uniform magnetic field range and the edge of the solenoid. Technical parameters: Hall sensor linear working voltage: DC 5V Magnetic field measurement range: - 67mT -+67mT Sensitivity: 31.3 ± 1.5V/T Solenoid size: length 26.0cm, inner diameter Φ 2.5cm, outer diameter Φ 4.5cm, 10 layers, Number of turns of solenoid: 3000 ± 20 turns, Length of central uniform magnetic field:>10.0cm. Output current of constant current source: 0-0.5A adjustable Ammeter range: 0-1999 mA, resolution: 1 mA Voltmeter range: 0-199.9mV, resolution 0.1mV
It is an important experiment in college physics experiment syllabus to measure the magnetic field distribution in an energized solenoid with Hall element.
