ckinger
Junior Member level 3
Hello, i am doing a project for non-contact current measurement using a Hall Effect Sensor built into an air gaped toroid core such as the Honeywell CSLA1CD( +- 57A) - https://sensing.honeywell.com/index.php?ci_id=49794 ; this is the data sheet. My understanding is that the hall effect sensor is a transducer that outputs mV in relation to the flux density in a linear fashion. An idea i have come up with is too have a current carrying conductor pass through the toroid core, inducing a magnetic field onto the core, which will then concentrate the flux density onto the Hall Effect Sensor, which in return will output a mV value depended on the current passing through. Now i assume that this mV output is going to have to be amplified ( i was thinking an LM358DT amplifier ) before going into the ADC converter of a micro-controller ( Arduino UNO ) but my issue lies in the fact that i am not too sure on what the gains of my amplifier should be, if or how to range the output/arduino so that the displayed reading is accurate, or how to convert the signal going into the micro-controller from mV to mA to be read off of a LCD display. Any insight on my problem would be greatly appreciated, and if you see anything that you see that you think might not work please let me know so we can further discuss the issue. Thank you.