V2 - Sensor Calibration System

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Concept and Application

The Sensor Calibration System is a tabletop device/ product to be used for Hall sensor IC calibration. The copper wire wound on the setup provides a controlled/adjustable magnetic field when energised with electrical power. The device requires a power source of 25 Volts with 16 Amps. A power consumption of 400Watts. The Hall sensor IC can be calibrated/ programmed to achieve a certain range of sensitivity. However to accurately calibrate/ program the IC ,an external magnetic field is required. The setup combined with a variable power supply of 25 volts 16 amps would allow the user to vary the magnetic field density from 0~140mT. This simply allows the user to calibrate the IC as per their needs.

A Hall effect sensor is a device that is used to measure the magnitude of a magnetic field. Its output voltage is directly proportional to the magnetic field strength through it. Hall effect sensors are used for proximity sensing, positioning, speed detection, and current sensing applications. In a Hall effect sensor, a thin strip of metal has a current applied along it.

In the presence of a magnetic field, the electrons in the metal strip are deflected toward one edge, producing a voltage gradient across the short side of the strip (perpendicular to the feed current).

Hall effect sensors have an advantage over inductive sensors in that, while inductive sensors respond to a changing magnetic field which induces current in a coil of wire and produces voltage at its output, Hall effect sensors can detect static (non-changing) magnetic fields. In its simplest form, the sensor operates as an analog transducer, directly returning a voltage. With a known magnetic field, its distance from the Hall plate can be determined.

Specifications

Parameters Values Units
Input Voltage 25 V (DC)
Input Current 16.2 A Max
Power Rating 405 W
Total Electrical Resistance 1.6 Ohms
Field Produced 131 mT
Wire Gauge 14 SWG
Copper Diameter 2.032 mm
Number of Turns 851 turns
Operating temperature 45 ℃ (Max)
Temperature Sensor Range -50 to +110
Total Weight xyz Kgs
Overall Dimensions 280x220x230 mm
At 5 Amps 24.99 mT
At 10 Amps 49.99 mT