08-23-2010 10:09 AM
I have a vibration switch http://ifmefector.com/ifmus/web/dsfs!VKV021.html that I am trying to get to work in my wireless sensor network. NI only offers a voltage input node (NI WSN-3202), but the sensor is only available in 4-20ma output. The analog output is only 1 wire.
Is there a way to convert that signal to use voltage and have the WSN read it accordingly?
Thanks,
Josh
08-23-2010 12:50 PM
Put a precision resistor in the loop and read the voltage across the resistor. For a 5VDC voltage input, use a 250 ohm resistor.