Physics Lab Equipment

LEEI-38A Solenoid Magnetic Field Measurement Apparatus

LEEI-38A Solenoid Magnetic Field Measurement Apparatus


  • Compact and sensitive integrated Hall element

  • Easy to use

  • Stable and reliable


Using a Hall device to measure the magnetic field distribution of a powered solenoid is an important experiment in science and engineering physics education. This innovative solenoid magnetic field measurement instrument uses an integrated linear Hall device to measure weak magnetic fields with high accuracy. Hence, problems such as low sensitivity, voltage interference, and instability (due to solenoid temperature rising) existing in traditional instruments are eliminated.


Using this apparatus, students can understand the principle of an integrated linear Hall element and learn how to use it to measure magnetic fields. With protective devices for power supply and sensor, this instrument is durable.


Using this apparatus, the following experiments can be performed:


1. Measure the sensitivity of a Hall sensor

2. Verify the output voltage of a Hall sensor proportional to the magnetic field intensity inside the solenoid

3. Acquire the relationship between the magnetic field intensity and position inside the solenoid

The instruction manual contains experimental configurations, principles, step-by-step instructions, and examples of experiment results. Please click Experiment Theory and Contents to find more information about this apparatus.

Main Parts and Specifications

Integrated Hall sensorMagnetic field measurement range: -67 ~ +67 mT, sensitivity: 31.3 ± 1.3 V/T
Solenoidlength: 260 mm, inner diameter: 25 mm, outer diameter: 45 mm, 10 layers
3000 ± 20 turns, length of uniform magnetic field in center: > 100 mm
Digital constant-current source0 ~ 0.5 A
Current meter3-1/2 digit, range: 0 ~ 1999 mA, resolution: 1 mA
Volt meter3-1/2 digit, range: 0 ~ 199.9 mV, resolution: 0.1 mV


Schematic of apparatus

(Click figure to enlarge)


Hall voltage vs Current

(Click graph to enlarge)


Magnetic field distribution in solenoid

(Click graph to enlarge)

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