2 X 4-20mA signals????

[Nick_K]

Hi guys,

I was wondering how it would be best to add together two 4-20mA signals?

I would like to know what reasonably priced components could do this operation and the output needs to be in a singular 4-20mA output from the two 4-20mA inputs.

Thanks in advance for any help you can give!

 

[shrtrnd]

Sounds like you want a 'summer'.
Check Wilkenson Instruments, Red Lion, other mfgrs that make them for 4-20ma devices.
You get a lot of information from reading the specs on their devices, and often-times
you can contact technical support on-line to ask specific questions about what you
need to do the job.

 

[Nick_K]

thank you for your advice shrtrnd!

 

[gorgon]

Something like this? http://www.inteccontrols.com/pdfs/SIA07A.pdf

 

[Nick_K]

yeah that looks great! thanks gorgon