Need to make 4 - 20mA loop isolators

Hi all,

I have a combined PH and CF transmitter of which can be found here

http://www.omega.co.uk/ppt/pptsc.asp?ref=CDTX300

I need to make 2 x 4 - 20mA loop isolators that I can connect to each output. The unit runs on a 24V power supply

Someone has pointed me to some of the components

http://docs-europe.electrocomponents.com/webdocs/0028/0900766b800289f3.pdf

http://www.rapidonline.com/Electric...106/?sid=003c3b70-f289-488d-b4a3-bb276c21a821

This will be the fist time I have made something like this and would like to do it on small prototype boards with chip housings etc.

Can anyone provide me with the correct parts from farnell or RS and possibly an easy to understand diagram?

I have used this device before but they are very expensive at £134.40 inc VAT

http://uk.rs-online.com/web/p/produ...552267573743D343636323231342677633D4E4F4E4526


Thanks

 

Anyone any ideas on this please?

 

someone has pointed me in the direction of these


Sensors, Sensor Conditioning, 4-20mA Transmitter - 4-20mA Conditioning - RCV420 - TI.com


Any ideas on how what other components are needed?

 

It looks like there a quite a lot of components to this circuit