Hey, I recently purchased current sensor CR5410-300 to make current measurements on a 12 V bus line in an industrial experimental setup. The sensor outputs a voltage, which I am reading on an NI analog input module. I was wondering how I could convert these voltage values to current. I looked up the datasheet but could not find a direct conversion formula. Could you please assist me with this issue? Thank you!
Welcome to the Digi-Key TechForum viamotors.
The datasheet shows it is a Single Element with ± 5 VAC/DC output. So if the output goes from -5V to +5V, it has a range of 10V. So for sensing 300A, it should change 1V for every 30A. I do not have a direct conversion chart. I also have not used these. Maybe one of our engineers that have used one, can add to this post.
Thank you for your insight!
I’ve never worked with these devices so I may be way off base. That said, I think the polarity of the signal indicates the direction of current flow and the magnitude is the absolute value of the voltage. e.g. -5V = -300A, +5V = +300A. In a DC application the signal polarity would be constant.