PR33-33 / 12-channel 4-20mA receiver (MCP3428)

I appear to be having an issue where channels 1-8 of this card are correctly reading values but channels 9-12 (the third MCP3428 chip) are not reading correct values. Signal lines confirmed correct by an external multimeter are reading incorrect digital values well below the expected 5813~29390 (16-bit) range of the ADC (typically on the the order of 0~1000).

Any advice on troubleshooting this issue - particularly to confirm if the MCP3428 itself or the specific opamps on those four last channels are working correctly?

the channel 9-12 has screen print error .
Please check resources section on the product page for correct connections.


Thanks for the information - this solved my issue!

Indeed this fixed my problem - thanks!!