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Thread: FMK code

  1. #1
    New User
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    Dec 2017
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    UK
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    FMK code

    Hi all,

    I have installed a 1 inch flow sensor which is working ok and set an alarm within the sensor to alert me if the flow drops below 500lph.

    However if flow was to stop altogether because of say a pump failure id like to shutdown certian other outlets.

    How would i do this?

    I cant see the system generated code for the flow alarm to help me out.

    Thanks.

  2. #2
    Frequent Contributor zombie's Avatar
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    Dec 2013
    Location
    Denver, CO
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    13,176
    This is the basic format for self resetting after XX time. You can make multiple of these if you need different reset times for different devices.

    FlowAlarm
    Set OFF
    If Sensorname < 500 Then ON
    If Outlet Return = OFF Then OFF
    Defer 000:30 Then ON
    Min Time XXX:XX Then ON

    This is the basic form for latching off

    FlowAlarm
    Set OFF
    If Sensorname < 500 Then ON
    If Outlet Return = OFF Then OFF
    Defer 000:30 Then ON
    Defer 000:10 Then OFF
    When On > 000:05 Then ON

    With either form add this line to whatever you want turned off.

    If Outlet FlowAlarm = ON Then OFF


    You might be an engineer if...You have no life and can prove it mathematically.

  3. #3
    Regular Vistor
    Join Date
    Nov 2013
    Location
    Lexington KY
    Posts
    40
    I just installed a 1 inch sensor in my overflow emergency standpipe. This will occasionally trickle water when my vortex pumps are on a high setting. It never really lasts more than a few seconds. I want to take some action such as turn my return pump off if this condition exists for something more than a minute. I have it set to alert me if its value is > 1 just so that I am aware. How would you suggest modifying the code for that scenario?

  4. #4
    Frequent Contributor zombie's Avatar
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    Leave everything else the same but change the flow line and the defer then on line.

    You might be an engineer if...You have no life and can prove it mathematically.

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