Can anyone recommend a good reference or source of information about standard wiring practices to avoid ground loops pertaining to analog signal measurements (i.e., 2-wire/4-wire)? I've looked at the ISA standard S50.1, but there is very little information there.

Thanks,

David Bergeron, P.E.
Thompson Equipment Co.
125 Industrial Ave
New Orleans, LA 70121
http://www.thompson-equipment.com

 

You might want to look at Allen-Bradley website for Publication 1770-4.1 titled "Industrial Automation Wiring and Grounding Guidelines"
Also available from your A-B distributor.