cuurent source 4-20 ma

[Dost]

I am using a Emerson DVC2000 digital valve controller which need a Analog Input Signal: 4.20 mA dc. It convert that signal into a pneumatic output signal, which feeds the
control valve actuator.  What will be best way to acheive this current source. I need just one such current source. Is there any hardware care that i need I do have hardware card that provides the voltage output.

Nadeem Qazi

[Christian Mergl]

Hey,

It would be helpfull if you also tell us which card you have?

Christian

[AnalogKid2DigitalMan]

0-10V in to 4-20mA output converters are quite common, here is one example:

http://www.omega.com/ppt/pptsc.asp?ref=CCT&Nav=dash01

[Tom O]

Hi Nadeem,

National Instruments have various products that can output the current you require, for example the NI-9265 c-series module. There may be other solutions more applicable to you depending on your current hardware setup, however, so more information on that would allow us to make more specific recommendations.

Regards,