Hello guys,
I'm not sure if I used correct term in the topic's name but basically I need the following.
I have one pressure transmitter that gives current signal (4-20 mA) and I want to use that signal on two places:
1. as input to analog PLC card
2. as input to instrument
I know I can just put instrument in series and everything is fine. Actually that is exact way how it is done now. I need some way to isolate this signal so I have one "part" that goes to instrument and other "part" that goes to PLC so I can safely replace instrument in case of need without disturbing PLC.
I hear that there is some kind of galvanic isolator circuits but not really sure.
Can you suggest me solution for this problem?
I'm not sure if I used correct term in the topic's name but basically I need the following.
I have one pressure transmitter that gives current signal (4-20 mA) and I want to use that signal on two places:
1. as input to analog PLC card
2. as input to instrument
I know I can just put instrument in series and everything is fine. Actually that is exact way how it is done now. I need some way to isolate this signal so I have one "part" that goes to instrument and other "part" that goes to PLC so I can safely replace instrument in case of need without disturbing PLC.
I hear that there is some kind of galvanic isolator circuits but not really sure.
Can you suggest me solution for this problem?