Question about connecting different analogue inputs to an analogue card

[auto_mitch]

I have two diffirent analogue signals 4-20mA from two diffirent supplies. Is it right to connect the (-) from the diffirent signals in one common (-) to the analogue card? Will this connection may damage the analogue card?

 

[js0p]

Re: Analogue Inputs

Hi auto_mitch

I guess you referred to ground pin. If all signals have the same grounding, the connection will be ok.

But be careful, if the supplies have different ground potential, it could produce a short circuit.

I hope this helps.

Best regards.