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Need to make 4 - 20mA loop isolators

Discussion in 'General Electronics Discussion' started by bowlingo, Feb 18, 2012.

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  1. bowlingo

    bowlingo

    40
    0
    Jun 29, 2011
    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
     
    Last edited: Feb 18, 2012
  2. bowlingo

    bowlingo

    40
    0
    Jun 29, 2011
    Anyone any ideas on this please?
     
  3. bowlingo

    bowlingo

    40
    0
    Jun 29, 2011
  4. GonzoEngineer

    GonzoEngineer

    321
    2
    Dec 2, 2011
  5. bowlingo

    bowlingo

    40
    0
    Jun 29, 2011
  6. GonzoEngineer

    GonzoEngineer

    321
    2
    Dec 2, 2011
    How many components did you think were in the commercial products?
     
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