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Recent content by Ahmedlng

  1. Ahmedlng

    pump min. flow

    thanks to all for the valuable information.
  2. Ahmedlng

    pump min. flow

    what are the basis on which the engineer to decide to select flow control or pressure control for the pump circulation valve (minimum flow) ?
  3. Ahmedlng

    I/O CARD - CONTROLLER

    thank you, littleinch
  4. Ahmedlng

    I/O CARD - CONTROLLER

    Thank you for your response, but i wanted more details, fore example; the signal comes from the transmitter is 4-20 mA already which means it's already an electrical signal can be readable by the controller, so what exactly the I/O card do ? thank you again
  5. Ahmedlng

    I/O CARD - CONTROLLER

    What's the function of i/o card and the controller in a control panel ?

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