Voltage measurement with NI- 9203

[JanBarton]

Hi,

Is it possible to use card NI9203 for voltage measurement? I need to replace one of pressure sensors that has current output for sensor that has only voltage output and there is not any card with voltage input in the machine. In datasheet there is a block scheme of input circuit of the card where is R 138 Ohm connected to COM. So if I connect R aprrox. 360 Ohm in series to card input I will get  voltage divider which will transform Voltage 0-10V to current 0-20mA. Will it be working correctly?

Thank you for help!

[Wayne.C · Accepted solution]

Jan,

In theory adding the external series resistance should work.  Hopefully this is a fairly short cable run and not a real noisy environment.  You need to verify that the new sensor is capable of driving a 20mA load.  You will have to take resistance of cabling etc into account when setting this up.