I wasted two weeks trying to get a KEM brand two wire transmitter , assuming ( stupidly ) that it is the same as the other two wire transmitters that we use. But then it was by sheer accident that I read the manual and found that it required the mA on the High side !! Its now working fine .
Just wanted to know the pros and cons of either of these methods - most Danfoss transmitters have the low side burden logic.
Thanks for any insights into this
What does this mean?
I think this is relevant:
@Ardubit
Is this a 4-20mA interface?
There is more to this than you're showing. Has to be. Instead of an ideal battery, device, and meter, show us the actual, working, circuit.
Reading the manual should be the very first thing you do if you start to work with a new kind of device. Totally regardless if this device is a smartphone, a radio, a washing-machine or a microcontroller or any kind of electronic sensor or electronic module
This part of your picture
looks like a current-meter for measuring milliamperes (1 milliampere = 0,001 ampere)
But somehow I got the feeling that you mean something different.
What the heck is a "2 wire transmitter"
"2" and "wire" are so universally generalised terms that I have no idea what the specifications of your particular "2-wire"-transmitter is.
4-20 mA interface?
0-10V interface?
GND and some kind of bus-line?
no idea!
Post the data sheet and your wiring diagram.
Yes ...it is. Sorry did not mention it !
This is the exact circuit deployed to test about 8 flowmeters. All working good now after they were rigged up as shown
This is the relevant image from data sheet.
Wiring diagram is as I posted. ( Sorry about the late response. )
And just for the benefit of some here is a article that explains what exactly is a 2-wire transmitter.
AFAIK a "2 wire transmitter" is a device that only needs 2 wires to connect.
The number of wires does not define the communication standard.
4-20mA is a common standard - but there are others.
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