04-11-2019 01:49 PM
I have a couple SCC-AI03 module that read voltages but I have some pressure transducers that have current readings, will it be possible to use the SCC-AI03 to read current values?
Thank you,
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04-11-2019 02:00 PM
I'd assume you could just use a shunt resistor. Check the how to guide: http://www.ni.com/tutorial/7114/en/
04-11-2019 02:13 PM
Hello mike-o-tronic,
I have a module that reads 4-20 mA with an output of 0-10V, do you know what kind of shunt do i need to make this work?
Thank you again,
04-11-2019 03:27 PM
My bad! I thought you had a current output and a voltage input. I'm not sure if you could measure voltage with a current input. I'm also not sure if the SCC-AI03 would work with a current input. Not that I have any experience with that module but judging from the manual.
04-11-2019 05:41 PM
@mike-o-tronic wrote:
My bad! I thought you had a current output and a voltage input. I'm not sure if you could measure voltage with a current input. I'm also not sure if the SCC-AI03 would work with a current input. Not that I have any experience with that module but judging from the manual.
That's because he said in the first message he had AI_03 module which read voltage (it does +/- 10V) with a transducer that has current "readings" (which doesn't make sense as a phrase. A transducer OUTPUTS a signal.
Now the last message is confusing because it says "I have a module that reads 4-20 mA with an output of 0-10V". An SCC module can be an analog input or output (and be voltage or current) but it can't input AND output. So if he has a module that reads current, then it can't be an SCC-AI03.
Clarification is needed.
04-12-2019 07:11 AM
Indeed clarification is needed. Sorry for all the confusion. Here is the situation:
I have a pressure transducer that outputs 4-20 mA, then I have some modules models SCC-AI03 that reads analog inputs in voltage (0 to 10V) and I was wondering if I can use the SCC-AI03 to read my pressure transducer that outputs a signal in Amps.
Thank you,
04-12-2019 07:44 AM
Yes. Put a 500 ohm resistor across AI+ and AI-. That allows you to measure the voltage drop across that resistor.. For 20 mA, voltage drop is 10V. For 4 mA, the drop is 2 V. Now you've converted your 4-20 mA signal to a 2-10V signal. Basic electronics.
04-12-2019 08:09 AM
Thank you all for the help!!! Greatly appreciate it.