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4-20ma wireless system

4-20ma wireless system

4-20ma wireless system

Hi There,

I am looking for a small DC (1.5-12v)powered 4-20ma wireless system. I need to transmit the current signal from about 30m away from my DC powered display. It only needs to be a one way transmit. There is no computer involved in any way. It is a simple loop circuit that I would like to have the cables removed.

Any ideas chaps? I noticed another topic that mention soemthing aout the Phoenix wireless stuff, but it looks quite big and the ability to supply that power / current is a worry.

Thanks in advance.


RE: 4-20ma wireless system

Do you have line-of-sight? An IR system might be easier and cheaper.


RE: 4-20ma wireless system

Hi, LOS is possible but not always possible.  What would you suggest in the infra red range?  Would you also have some RF solutions?

Cheers, ben


RE: 4-20ma wireless system


Thanks for that.  I have seen the Phoenix before, but it is too large and the power demands are too high.  I loke the look of the Banner stuff, but I fear it may be the same.  

Do you think I could converter 4-20ma to 0-1v or 0-5v and use a simple AM/FM TX/RX?

RE: 4-20ma wireless system

I suppose you can breadboard anything.

Banner's stuff runs on 10-30V dc, so 12Vdc is doable.  They've also got battery packs that will run the transmit side.  The receiver/gateway side should be line powered through a power supply.

Link to 10-30Vdc stuff:

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