Discover our Clipsal Smart Home packages as seen on The Block 2018

in location


I'm looking for

  • Wholesalers
    • Uncheck All Check All
    • Expand
    • Expand
    • Expand
    • Uncheck All Check All
  • Switchboard Manufacturers
    • Uncheck All Check All

The best way to see what Clipsal electric products can do for your home is seeing them in action at a Clipsal Display Centre.

Product stock may vary according to location. If you're after a specific product range, please check with your chosen location before visiting.

10 Results
    Load More Load Complete
    Change Location

    How to calculate and configure the Zero and Full scale value for a PM8000 Analog Input

    Configuring the analog input on a PM8000.

    Product Line
    PM8000 series

    Meter Configuration

    Unlike other ION devices, the PM8000 analog input is only rated for 4-20mA rather than 0-20mA. 

    Per the ION Reference, the Zero Scale can be calculated as follow:

    Zero Scale = FullScale - (FullScale - X)(Af - Ax)/(Af - Aa)

    Aa is the analog hardware output minimum range value. (For the PM8000, Aa is equal to 4 mA.)
    Af is the analog hardware output maximum range value. (For the PM8000, Af is equal to 20 mA.)
    Ax is the analog hardware output minimum value. (For the PM8000, Ax is equal to 4 mA.)
    X is the scaled equivalent of Aa. (This is determined by the device sending the Analog signal.)

    The previous equation can be simplified to:

    Zero Scale = FullScale - (FullScale - X)*(Af - Ax)/(Af - Aa)
    Zero Scale = FullScale - (FullScale - X)*(20 mA - 4mA)/(20 mA - 4mA)
    Zero Scale = FullScale - (FullScale - X)
    Zero Scale = X

    Therefore, the Zero Scale should correspond with the 4mA value.

    For example, if a PM8000 meter is monitoring a 0 to 120 kW system and receiving the power information via a 4 - 20 mA analog signal, the PM8000 would need to be configured to have a Zero Scale of 0 and a Full Scale value of 120.

    For instructions on programming the Zero Scale and Full Scale values, see attachment below

    Didn’t find what you were looking for?

    Try Searching Again View Our Categories

    Need further assistance?

    Our Customer Care department provides total customer service solutions for our residential, industrial and commercial applications.

    Get Assistance