Implementing Hall Effect Sensor

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    Hall effect Sensor
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Discussion Overview

The discussion revolves around the implementation and troubleshooting of a Hall Effect Sensor for measuring the magnetic field produced by a solenoid. Participants explore various aspects of sensor setup, specifications, and expected behavior in the context of experimental applications.

Discussion Character

  • Technical explanation
  • Experimental/applied
  • Debate/contested

Main Points Raised

  • One participant expresses difficulty in obtaining results from a Hall Effect Sensor used with a solenoid and seeks guidance on proper implementation.
  • Another participant requests details about the specific sensor model and schematic to provide more targeted assistance.
  • A participant suggests looking for a datasheet for a similar Hall Effect Sensor to understand expected output voltages and optimal sensor orientation.
  • Another participant recommends checking specific models of Hall Effect sensors available from manufacturers like Allegromicro and Digikey, noting that these sensors may only work effectively with DC solenoids.
  • It is mentioned that Hall Effect sensors typically have low output voltages and may require a strong magnetic field or additional amplification to produce measurable results.
  • A suggestion is made to test the sensor's output by placing it near a strong permanent magnet to verify its functionality.
  • Participants discuss the need for a sufficient DC current in the solenoid to achieve a noticeable output from the sensor.

Areas of Agreement / Disagreement

Participants express varying levels of understanding and approaches to using Hall Effect Sensors, with no consensus on the specific model or setup details. Multiple viewpoints on troubleshooting and sensor specifications remain present.

Contextual Notes

Participants mention the importance of sensor specifications, such as output voltage characteristics and power supply requirements, but do not resolve the specifics of the sensor model or its configuration.

Who May Find This Useful

This discussion may be useful for individuals working on experimental setups involving Hall Effect Sensors, particularly in the context of measuring magnetic fields in solenoids.

sbagliato
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Hi, I am working with a solenoid and I am trying to measure the magnetic field that it can produce using a Hall Effect Sensor but I cannot seem to get any results from the sensor. Does anyone know how this is suppose to be done? Thanks.
 
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sbagliato said:
Hi, I am working with a solenoid and I am trying to measure the magnetic field that it can produce using a Hall Effect Sensor but I cannot seem to get any results from the sensor. Does anyone know how this is suppose to be done? Thanks.

Welcome to the PF. What sensor are you using? Can you post a schematic of how you are hooking it up?
 
it is a linear hall effect sensor but I was not able to find out the specific model (the sensor was given to me). I have attached a PDF with the basics of my set up. Is it conceptually correct?
 

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sbagliato said:
it is a linear hall effect sensor but I was not able to find out the specific model (the sensor was given to me). I have attached a PDF with the basics of my set up. Is it conceptually correct?

I would look for similar devices on the Internet, and download a datasheet for a similar device. That should give you an idea of what kinds of output voltages to expect for different fields. And also let you know what direction to turn the sensor to have the B-field have the maximum effect on the output voltage.
 
Look at Allegromicro for Hall Effect sensors. Digikey has a few models. See
www.digikey.com
http://search.digikey.com/scripts/DkSearch/dksus.dll
http://www.allegromicro.com/en/Products/Categories/Sensors/index.asp
These will not work easily unless your solenoid is DC.
[Edit] This is one Allegro unit available at Digikey:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=620-1024-ND
The magnetic field is perpendicular to flat face. They have 16,545 in stock; $1.74 each. Linear field sensor, 5.25 Gauss per millivolt.
You want the 3-SIP or SIP-3 case. What is the maxumum thickness you can use?
 
Last edited:
Hall effect sensors have very low output voltages and even the ones that have internal amplifiers are not very sensitive.

Try holding it near a strong permanent magnet at one of the poles and verify that the voltage output changes when you rotate the sensor.

You would need a large DC current in a big flat solenoid to get a good deflection without further amplification.

Typically, they need a 5 volt power supply and the output is 2.5 volts when they are not in a magnetic field.
 

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