4-20mA design review

Job ID: 31562617

Budget: $30 – $250 AUD

I have a 4 channel, 4-20mA input card which I have designed. I would like someone to review, simulate and improve the design.

The design has been prototyped and tested, it works well when one channel is in use but I get issues when multiple transmitters from the same source (or with common negative) is used. I would like someone to help resolve this issue and provide the rectified design.

I can supply a schematic to the chosen freelancer