IECM 12.0 beta User Manual > Using the IECM > Configuring the Plant >

The Unit Systems Screen

The Unit Systems screen is the third screen in the CONFIGURE SESSION Program Area. This screen allows you to specify the unit systems that will be used in the IECM:

Note that values are converted to match the unit systems you have chosen, if needed, so there may a tiny bit of roundoff error in cases where conversions occur.

Also, if a default parameter value appears to be oddly precise, it may be in a different unit system internally. For example, consider the Ambient Air Temperature on the SET PARAMETERS: Overall Plant: Performance screen for a Pulverized Coal (PC) plant. The default value in English units, the native unit system for that parameter, is 66 degrees F. The default value in Metric units is 18.89 degrees C.

Each option includes a menu, similar to the configuration menus on the Plant Design screen. The following options are available on this screen:

•IECM Default Unit System

•Current Session Unit System

•Result Flow Rates

•Result Time Period

•Performance Table

•Cost Table

These options are described in more detail in the following sections.