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Dear All Anybody know some isolato

Dear All Anybody know some isolato

Dear All Anybody know some isolato

(OP)
Dear All
Anybody know some isolator to convert a 4 wire instruments(input) to 2 wire instrument(output).
Thanks in advance
Ricardo Almarza
ricardo.almarza@promon.com.br

RE: Dear All Anybody know some isolato

Sound like you’re to convert a powered device to a loop powered device. That’s not easy, because most 4 wire device are that way due to power consumption. So if you device used 50ma at 24vdc to power up your loop would require a 300vdc power source at 4ma on the loop side.

If you got stuck replacing an old 2-wire device with a new 4-wire device and only have a 2-wire cable in place then your SOL. However if you have a shield in that cable and don't mind the possibility of noise interfering with the signal most 4-wire devices can be wired as 3-wire devices.

4-wire
+24vdc-------------------Black
+4-20ma------------------White
-24vdc------|------------Shield
-4-20ma-----|

Hope that's enough Rope....

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